DOCSLIB.ORG

Redalyc.PRODUCTION and QUALITY 'PONKAN' TANGERINE

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Redalyc.PRODUCTION and QUALITY 'PONKAN' TANGERINE Revista Caatinga ISSN: 0100-316X [email protected] Universidade Federal Rural do Semi-Árido Brasil Freitas de Medeiros, Luciana; Mendonça, Vander; Cardoso de Almeida, Anna Luiza; Araújo Oliveira, Lenilton Alex de; Medeiros Paula, Ylana Cláudia PRODUCTION AND QUALITY 'PONKAN' TANGERINE TREE AFTER RECOVERING PRUNING Revista Caatinga, vol. 22, núm. 3, julio-septiembre, 2009, pp. 166-173 Universidade Federal Rural do Semi-Árido Mossoró, Brasil Disponível em: http://www.redalyc.org/articulo.oa?id=237117837026 Como citar este artigo Número completo Sistema de Informação Científica Mais artigos Rede de Revistas Científicas da América Latina, Caribe , Espanha e Portugal Home da revista no Redalyc Projeto acadêmico sem fins lucrativos desenvolvido no âmbito da iniciativa Acesso Aberto REVISTA CAATINGA — ISSN 0100-316X UNIVERSIDADE FEDERAL RURAL DO SEMI-ÁRIDO (UFERSA) Pro-Reitoria de Pesquisa e Pós-Graduação PRODUCTION AND QUALITY ‘PONKAN’ TANGERINE TREE AFTER RECOVERING PRUNING Luciana Freitas de Medeiros Undergraduate student, Agronomy, UFERSA- E-mail: [email protected] Vander Mendonça Agronomist, Dr., CNPq fellowship, Prof. of Plant Science Dept., Universidade Federal Rural do Semi-Árido (UFERSA), BR 110, km47, CaixaPostal 137, CEP 59625-900 – Mossoró, RN, Brazil, e-mail: [email protected] (corresponding author) Anna Luiza Cardoso de Almeida Undergraduate student, Agronomy, UFERSA- E-mail: [email protected] Lenilton Alex de Araújo Oliveira Undergraduate student, Agronomy, UFERSA - E-mail: [email protected] Ylana Cláudia Medeiros Paula Undergraduate student, Agronomy, UFERSA - E-mail: [email protected] ABSTRACT - This research was aimed to test top pruning effect in the lowering of the top and pruning the lower part of the plant on the recovering of 12 years old ‘Ponkan’ tangerine tree, 4 meters height, spaced 6 x 4 m and grafted on the ‘Cravo’ lemon tree. This experiment was carried out at Vito Crincoli Farm at Perdões/MG, Brazil. It was used randomized blocks in a factorial scheme of 4 x 2, top pruning (without pruning, pruning at 3.0; 2.5 and 2.0m) and skirt pruning (with and without pruning) with 4 replications. The useful parcel used three plants. The heavy top pruning damaged the production in the first tree years, also, after the second year, the plants showed a very good recovering. This result was confirmed in the third harvest, when diferents kinds of top pruning did not differ in the years. The plant´s skirt pruning treatment was superior to the treatment without pruning. The useful plot was constituted of three Tangerine plants. After the third year the treatment those who had more severe pruning obtained heavier fruits, indicating this kind of pruning to recover fruit quality. Key words : Citrus reticulata Blanco, cultural treat production PRODUÇÃO E QUALIDADE DE FRUTOS DA TANGERINEIRA ‘PONKAN’ APÓS PODA DE RECUPARAÇÃO RESUMO - Objetivou nesta pesquisa testar o efeito da poda de topo no rebaixamento da copa e poda da saia na recuperação da tangerineira ‘Ponkan’ com 12 anos de idade, altura de 4 metros, espaçadas de 6 x 4 m e enxertadas sobre limoeiro ‘Cravo’. O experimento foi conduzido na Fazenda Vito Crincoli localizada no município de Perdões, MG. O delineamento experimental utilizado foi em blocos ao acaso, em esquema fatorial 4 x 2, sendo poda do topo (sem poda, poda a 3,0; 2,5 e 2,0m) e poda da saia (sem e com a poda) com quatro repetições. A parcela útil foi constituída de três plantas. As podas drásticas de topo prejudicaram a primeira produção, contudo a partir do segundo ano da poda, as plantas apresentaram boa recuperação. Essa afirmativa foi confirmada na terceira colheita, quando os diferentes tipos de podas do topo não se diferenciaram na produtividade, sendo que o tratamento com poda da saia foi superior ao sem poda. Os diferentes tipos de poda não prejudicaram a qualidade de frutos de tangerineira ‘Ponkan’ nas três safras subsequente as podas. Após o terceiro ano as plantas que sofreram podas mais severas produziram frutos com peso superiores, demonstrando a viabilidade da poda na recuperação da qualidade dos frutos Palavras-chave : Citrus reticulata Blanco, tratos culturais e produção INTRODUCTION null. A small hole, removing two or three branches with handsaw, can to show excellent results and to allow a In adult citric plants, is common to find an excess good photosynthesis around whole plant (Medina, 2001). of shade inside of the pantry top (3% to 4% of the The knowledge of the vegetation habit, fruition maximum solar radiation). Consequently, as the plant and the productive potential of the citric plants of an measure turns old, many branches in its interior use to die orchard, guides the correct use and the appropriate type of and in consequence the plant internal production becomes pruning (Donadio & Rodrigues, 1992). The pruning can modify the natural tendency of accumulate weak, Caatinga (Mossoró,Brasil), v.22, n3, p166- 173, julho/setembro 2009 www.ufersa.edu.br/caatinga REVISTA CAATINGA — ISSN 0100-316X UNIVERSIDADE FEDERAL RURAL DO SEMI-ÁRIDO (UFERSA) Pro-Reitoria de Pesquisa e Pós-Graduação declining and/or died branches in the interior of the pantry skirt pruning had been carried through an only time in top; at the same time, its favor the fruition in the inferior 12/11/01. The experimental parcel was constituted of five parts by the increase of the aeration and isolation (Stuchi, plants, being that only three central plants had constituted 1994). the useful parcel. Each treatment was repeated 4 times. The pruning of adult citric plants is not an usual Twenty days after the pruning, the production practice in the orchards from Brazil, however, it is fertilizations start with N, P and K, as analysis of soil. common in some countries from north hemisphere, when The nitrogen, in the ammonium sulfate form, was applied the main objective is the production of fruits for the in three applications (300, 250 and 250 g/plant) in the natural consumption (Donadio & Rodrigues, 1992). months of December, February and April, respectively. Therefore, the citric plants can be pruned during all life, The phosphorus, in the form of simple superphosphate, an the example of this is the conduction of ‘Clementina’ only application (220g/plant) in December. The tangerine tree lead with pruning during 27 years, reaching potassium, in the potassium chloride form, was parceled excellent productions and good size of fruits (Oren, 1988). in two applications (40 and 30g/planta) in the months of Pruning the half of the length of all ramification December and April, respectively. These fertilizations had or the suppression (a base pruning) of 50% of the been repeated, in the same amounts, in the three harvests ramification in ‘Montenegrina’ tangerine tree, before the where the evaluations were made. full flowering, decrease the number of fruits of the 3ª The effect of the pruning had been evaluated in category, without reduce the total production in kg/plant, the three subsequent harvests by the following variable: besides breaking the production alternation. However, number of fruits per plant, production per plant (kg) and these types of pruning are more efficient when they are esteemed productivity (t/ha). The quality of the fruits was realized with frequency of two years (Panzenhagen et al., evaluated in the harvest of 2002 in a sampling of five 1991). fruits per plant, through the characteristics average weight Factors as the productivity, precocity, conduction of fruits (g), diameter of the fruit (cm), total soluble solids forms, interpretation of the vegetative situation of the tree, - SST (%), total titratable acidity - TTA (%), ratio interventions and reactions of the tree are components (SST/TTA). In harvest of 2003 were evaluated: average connected to this practical, becoming indispensable for its weight of the fruits (g), percentage of juice, SST, ratio knowledge and domain. (SST/TTA) and TTA (%). In following harvest of 2004, According to Petto Neto (1991), studies and were evaluated average weight of fruit (g), volume of assays have to be incentive to the different types of longitudinal and transversal diameters (cm), percentage of pruning for orientation as to the accomplishment of this juice (mL), TTA (%), SST (%), percentage of juice and natural practice. Fallahi & Kilby (1997), alert for the ratio (SST/TTA).The first harvest was gathered in effect of the drastic pruning that can compromise severely 03/06/2002, second gathered in 17/06/2003 and third the productivity and the quality of the fruits in the gathered in 23/06/2004. following harvests. The results had been submitted to the analysis of This research aimed to test the production of variance and the data averages were compared for the test quality ‘Ponkan’ tangerine tree in three subsequent of Tukey 5% of probability. harvests to the treatments with top pruning and pruning circumference. RESULTS AND DISCUSSION MATERIALS AND METHODS Number of fruits, production and productivity in the first harvest after the pruning This experiment was done at the Vito Crincoli´s In the first harvest (2002) subsequent to the Farm in Perdões/MG, Brazil, in tangerine tree ( Citrus treatments with the pruning, the characteristics: number of reticulata Blanco cv. Ponkan) with 12 years old, 4 meters fruits per plant, production and productivity had presented height, 6 x 4 m spacing grafted on ‘Cravo’ lemon tree. significant differences for the test F (P<0,05) having been It was used randomized plots in a factorial influenced by the interaction between the two types of scheme of 4x2, being four types of top pruning (without pruning (Table 1). pruning, pruning at 3.0; 2.5 and 2.0 measured from the The biggest number of fruits for plants (330,5) ground) and with and without skirt pruning (removed of was observed in the treatment with skirt pruning without some unproductive branches located 30 cm above the leg, top pruning.
Load more

Recommended publications
  • Genetic Diversity and Population Structure of Pummelo (Citrus Maxima) Germplasm in China
    Tree Genetics & Genomes (2017) 13: 58 DOI 10.1007/s11295-017-1133-0 ORIGINAL ARTICLE Genetic diversity and population structure of pummelo (Citrus maxima) germplasm in China Huiwen Yu1 & Xiaoming Yang 1 & Fei Guo1 & Xiaolin Jiang1 & Xiuxin Deng1 & Qiang Xu1 Received: 31 July 2016 /Revised: 11 March 2017 /Accepted: 19 March 2017 /Published online: 26 April 2017 # Springer-Verlag Berlin Heidelberg 2017 Abstract Pummelo (Citrus maxima) is one of the basic spe- Keywords Pummelo . Genetic diversity . Population cies of Citrus. It has been cultivated for about 4000 years in structure . Nuclear simple sequence repeat (nSSR) China, and therefore, there are abundant germplasm during the long time of culture. However, there is still a lack of a detailed study of the genetic characteristics of pummelo pop- Introduction ulation. In this study, genetic diversity and population struc- ture among 274 pummelo accessions collected in China were Citrus is one of the most important fruit crops in the world. analyzed using 31 nuclear simple sequence repeat (nSSR) The genetic background of citrus is very complicated because markers. The observed heterozygosity was calculated as of its biological characteristics, such as wide sexual compati- 0.325 and genetic differentiation Fst as 0.077. Genetic struc- bility on interspecies and intergenus levels. The complex ge- ture analysis divided the whole germplasm into three subpop- netic background has hindered the genetic studies in citrus. ulations, Pop-a, Pop-b, and Pop-c. Pop-a was composed of Exploring genetic variation within a single species will facil- accessions mostly from Southeast China, Pop-b was com- itate genetic analysis such as genome-wide association studies posed of accessions from the central region of South China, (GWAS) of important traits.
    [Show full text]
  • Classification and Cultivars
    1 Classification and Cultivars 2 Two Tribes • Clauseneae • Citreae has 3 Subtribes –Triphasiinae –Balsamocitrineae –Citrinae 3 Fortunella • Four species - Small trees and shrubs. • Flowers later than Citrus. • Freeze - hardy • Small fruit –‘Meiwa’ and ‘Marumi’ - round –‘Nagami’ ovate 4 Poncirus • Two trifoliate spp. –trifoliata ‘Flying Dragon’ –poyandra • Deciduous • Thorny, Cold hardy, long thorns • Makes great hedges , rootstocks 5 Microcitrus • Northeastern rainforest Australia • Moderate-sized trees. • Leaves are unifoliate dimorphic • Microcitrus australasica –Resistant to burrowing nematode and phytophthora • Micro leaves, flowers, and fruit 6 Clymenia • Unifoliate acuminate leaves tapering into very short petiole. • Branches are thornless. • Style shorter than other true Citrus and stigma is larger and flattened • Fruit - ovoid, thin peeled, many oil glands, many small seeds. 7 Eremocitrus • Xerophytic native of Australia • Spreading long drooping branches • Leaves unifoliate, greyish green, thick, leatherly, and lanceolate. • Sunken stomata, freeze hardy • Ideal xeroscape plant. 8 Citrus - Subgenus Eucitrus • Vesicles - no acrid or bitter oil • C. medica (Citrons) –Uses - candied peel, • Jewish ceremony • Exocortis indicator 9 Citrus limon (Lemons) • Commerce –‘Lisbon’ and ‘Eureka’ • Dooryard –Meyer (Lemon hybrid) • Rough Lemon –Rootstock 10 Lemon Hybrids • Lemonage (lemon x sweet orange) • Lemonime (lemon x lime) • Lemandrin (lemon x mandarin) • Eremolemon (Eremocitrus x lemon) - Australian Desert Lemon 11 Citrus aurantifolia (Limes) • ‘Key’ or ‘Mexican’ limes • ‘Tahiti’ or ‘Persian’ limes some are triploids and seedless • C. macrophylla (lime-like fruit) –Rootstock in California • Lemonimes (lime x lemon) • Limequats (lime x kumquat) 12 • Not grown either in Tahiti or Persian (Iran) • Seedless and marketed when still dark green 13 C. aurantium - Sour Orange • ‘Seville’ in Southern Europe –Orange marmalade • ‘Bouquet’ & ‘Bergamot’ • - Italy –Essential oil • Many forms like ‘Bittersweet’ –Rootstock - High quality fruit.
    [Show full text]
  • Citrus from Seed?
    Which citrus fruits will come true to type Orogrande, Tomatera, Fina, Nour, Hernandina, Clementard.) from seed? Ellendale Tom McClendon writes in Hardy Citrus Encore for the South East: Fortune Fremont (50% monoembryonic) “Most common citrus such as oranges, Temple grapefruit, lemons and most mandarins Ugli Umatilla are polyembryonic and will come true to Wilking type. Because most citrus have this trait, Highly polyembryonic citrus types : will mostly hybridization can be very difficult to produce nucellar polyembryonic seeds that will grow true to type. achieve…. This unique characteristic Citrus × aurantiifolia Mexican lime (Key lime, West allows amateurs to grow citrus from seed, Indian lime) something you can’t do with, say, Citrus × insitorum (×Citroncirus webberii) Citranges, such as Rusk, Troyer etc. apples.” [12*] Citrus × jambhiri ‘Rough lemon’, ‘Rangpur’ lime, ‘Otaheite’ lime Monoembryonic (don’t come true) Citrus × limettioides Palestine lime (Indian sweet lime) Citrus × microcarpa ‘Calamondin’ Meyer Lemon Citrus × paradisi Grapefruit (Marsh, Star Ruby, Nagami Kumquat Redblush, Chironja, Smooth Flat Seville) Marumi Kumquat Citrus × sinensis Sweet oranges (Blonde, navel and Pummelos blood oranges) Temple Tangor Citrus amblycarpa 'Nasnaran' mandarin Clementine Mandarin Citrus depressa ‘Shekwasha’ mandarin Citrus karna ‘Karna’, ‘Khatta’ Poncirus Trifoliata Citrus kinokuni ‘Kishu mandarin’ Citrus lycopersicaeformis ‘Kokni’ or ‘Monkey mandarin’ Polyembryonic (come true) Citrus macrophylla ‘Alemow’ Most Oranges Citrus reshni ‘Cleopatra’ mandarin Changshou Kumquat Citrus sunki (Citrus reticulata var. austera) Sour mandarin Meiwa Kumquat (mostly polyembryonic) Citrus trifoliata (Poncirus trifoliata) Trifoliate orange Most Satsumas and Tangerines The following mandarin varieties are polyembryonic: Most Lemons Dancy Most Limes Emperor Grapefruits Empress Tangelos Fairchild Kinnow Highly monoembryonic citrus types: Mediterranean (Avana, Tardivo di Ciaculli) Will produce zygotic monoembryonic seeds that will not Naartje come true to type.
    [Show full text]
  • Improvement of Subtropical Fruit Crops: Citrus
    IMPROVEMENT OF SUBTROPICAL FRUIT CROPS: CITRUS HAMILTON P. ÏRAUB, Senior Iloriiciilturist T. RALPH ROBCNSON, Senior Physiolo- gist Division of Frnil and Vegetable Crops and Diseases, Bureau of Plant Tndusiry MORE than half of the 13 fruit crops known to have been cultivated longer than 4,000 years,according to the researches of DeCandolle (7)\ are tropical and subtropical fruits—mango, oliv^e, fig, date, banana, jujube, and pomegranate. The citrus fruits as a group, the lychee, and the persimmon have been cultivated for thousands of years in the Orient; the avocado and papaya were important food crops in the American Tropics and subtropics long before the discovery of the New World. Other types, such as the pineapple, granadilla, cherimoya, jaboticaba, etc., are of more recent introduction, and some of these have not received the attention of the plant breeder to any appreciable extent. Through the centuries preceding recorded history and up to recent times, progress in the improvement of most subtropical fruits was accomplished by the trial-error method, which is crude and usually expensive if measured by modern standards. With the general accept- ance of the Mendelian principles of heredity—unit characters, domi- nance, and segregation—early in the twentieth century a starting point was provided for the development of a truly modern science of genetics. In this article it is the purpose to consider how subtropical citrus fruit crops have been improved, are now being improved, or are likel3^ to be improved by scientific breeding. Each of the more important crops will be considered more or less in detail.
    [Show full text]
  • Citrus Varieties in Egypt: an Impression
    International Research Journal of Applied Sciences Short Communication pISSN: 2663-5577, eISSN: 2663-5585 Citrus Varieties in Egypt: An Impression Waleed Fouad Abobatta Department of Citrus, Horticulture Research Institute, Agriculture Research Center, Egypt ARTICLE INFORMATION ABSTRACT Received: October 30, 2018 Citrus industry is very important for Egyptian economy, citrus fruit is the leading exportable agricultural product of Egypt and is an important source of national income. Citrus cultivation Accepted: December 03, 2018 area represents about 29% of the total fruit area, there are different citrus varieties cultivated in Egypt. This work aims to provide a short description of main citrus varieties cultivated in Published: January 31, 2019 Egypt through providing information about fruit size, maturity periods, seediness and productivity average and main cultivated areas for each variety. However Washington Navel Corresponding Author: and Valencia orange are the main varieties followed by Mandarins group varieties, lemon, Waleed Fouad Abobatta, Balady orange, while other varieties like Grapefruit, Sour orange and Kumquat are cultivated Department of Citrus, in small areas. Horticulture Research Institute, Agriculture Research Center, Egypt Key words: Citrus industry, navel orange, valencia orange, mandarins group, citrus varieties INTRODUCTION Citrus is a genus from Rutaceae family, subfamily Aurantoideae1 and there are several species in this genus; but there are major species such as sweet orange (Citrus sinensis (L.) Osbeck), mandarins group, grapefruits (Citrus paradisi ), lime (Citrus aurantifolia) and sour orange (Citrus aurantium L.)2. Citrus is a diploid genus origin in tropical, subtropical, but now it is produced mainly in arid and semiarid regions. Citrus species are among the most widely grown fruit crops in the world and have a huge market all over the world3.
    [Show full text]
  • CITRUS BUDWOOD Annual Report 2017-2018
    CITRUS BUDWOOD Annual Report 2017-2018 Citrus Nurseries affected by Hurricane Irma, September 2017 Florida Department of Agriculture and Consumer Services Our Vision The Bureau of Citrus Budwood Registration will be diligent in providing high yielding, pathogen tested, quality budlines that will positively impact the productivity and prosperity of our citrus industry. Our Mission The Bureau of Citrus Budwood Registration administers a program to assist growers and nurserymen in producing citrus nursery trees that are believed to be horticulturally true to varietal type, productive, and free from certain recognizable bud-transmissible diseases detrimental to fruit production and tree longevity. Annual Report 2018 July 1, 2017 – June 30, 2018 Bureau of Citrus Budwood Registration Ben Rosson, Chief This is the 64th year of the Citrus Budwood Registration Program which began in Florida in 1953. Citrus budwood registration and certification programs are vital to having a healthy commercial citrus industry. Clean stock emerging from certification programs is the best way to avoid costly disease catastrophes in young plantings and their spread to older groves. Certification programs also restrict or prevent pathogens from quickly spreading within growing areas. Regulatory endeavors have better prospects of containing or eradicating new disease outbreaks if certification programs are in place to control germplasm movement. Budwood registration has the added benefit in allowing true-to-type budlines to be propagated. The selection of high quality cultivars for clonal propagation gives growers uniform plantings of high quality trees. The original mother stock selected for inclusion in the Florida budwood program is horticulturally evaluated for superior performance, either by researchers, growers or bureau staff.
    [Show full text]
  • New and Noteworthy Citrus Varieties Presentation
    New and Noteworthy Citrus Varieties Citrus species & Citrus Relatives Hundreds of varieties available. CITRON Citrus medica • The citron is believed to be one of the original kinds of citrus. • Trees are small and shrubby with an open growth habit. The new growth and flowers are flushed with purple and the trees are sensitive to frost. • Ethrog or Etrog citron is a variety of citron commonly used in the Jewish Feast of Tabernacles. The flesh is pale yellow and acidic, but not very juicy. The fruits hold well on the tree. The aromatic fruit is considerably larger than a lemon. • The yellow rind is glossy, thick and bumpy. Citron rind is traditionally candied for use in holiday fruitcake. Ethrog or Etrog citron CITRON Citrus medica • Buddha’s Hand or Fingered citron is a unique citrus grown mainly as a curiosity. The six to twelve inch fruits are apically split into a varying number of segments that are reminiscent of a human hand. • The rind is yellow and highly fragrant at maturity. The interior of the fruit is solid rind with no flesh or seeds. • Fingered citron fruits usually mature in late fall to early winter and hold moderately well on the tree, but not as well as other citron varieties. Buddha’s Hand or Fingered citron NAVEL ORANGES Citrus sinensis • ‘Washington navel orange’ is also known • ‘Lane Late Navel’ was the first of a as the Bahia. It was imported into the number of late maturing Australian United States in 1870. navel orange bud sport selections of Washington navel imported into • These exceptionally delicious, seedless, California.
    [Show full text]
  • Rootstocks and Mineral Nutrition of Citrus
    .97. Rootstocksand Mineral Nutrition of Citrus H. K. Wutscher Introduction Mineral nutrition of plants is a topic which has beendi~ussed s'ince the beginningof agriculture. Aristotte wrote treatises on it, and until the 15th and 16th century the consensuswas that whateverplants needto grow, it al camefrom the soil. Al- though Nicholasde Cusaand Van Helmont, after his famousexperiment with a willow cutting, had ideasthat the sourceof the materialsthat makeup a plant was not quite assimple, it wasthe work of Priesdy,Ingenhousz, and De Sausa.re,and the discoveryof photosynthesisin the 18th and early 19th century that put mineral nutrition in its proper persp..:tiveas only one facet in the metabolismof plants. The grandold men of plant physiology,Sachs and Pfeffer, worked out the basisof mineral nutrition aswe know it today in the secondhalf of the last century and gaveus an understandingof the constituentsof plant tissuesand the essentialityof someelements. In a more practi:al vein, their contemporaries,Boussingault, Liebig, Gilbert, and Lawes,showed the possibility of increagngcrop yields by applicationof mineral fertilizers. Furtherwork, mostly with solution culture, showedthe essentialityof a seriesof elementswhich plants needin only very small anounts, the so-calledmicro-elements. A greatamount of effort went into trying to find the combination of variouselements for optinum plant growth and resultedin many publicationsof little practicalvalue for 2 reasons.First, becausemuch of the wort<was donewithout the statisticaltools to separatereal from apparentdifferences, and secondb..:ause mineral uptake is a function of a mazeof subtlecross connections of environment,development, genetics, and other variouselements involved. Mineral nutrition ceasedto be a glamourtopic of research,although there was a brief revivalwhen isotopes became generally available.
    [Show full text]
  • Home-Grown Citrus Displayed at Show
    Home-grown Citrus Displayed at Show Texas A&M AgriLife Extension Service — Galveston County Office November 27, 2013 PHOTO BY William M. Johnson Dr. William Johnson is a Area citrus growers submitted 176 entries for display and competition at the 2013 Upper horticulturist with the Gulf Coast Citrus Show held on November 21. Terry Cuclis (pictured above right) of Alvin Galveston County Office was awarded the Best of Show Rosette for his ‘BC-2’ satsuma and Ray Michalik of Brazoria of Texas A&M AgriLife was awarded the Reserve Champion Rosette for his ‘Rio Red’ grapefruit. Extension Service. Visit his website at http://aggie- I knew that visitors to our ton County AgriLife Ex- area including oranges, horticulture.tamu.edu/ Upper Gulf Coast Citrus tension Office in Carbide grapefruits, lemons, tan- galveston. Show held last Thursday Park. gerines and tangelos. News column printed in would very likely enjoy Residents were provided Area citrus growers sub- the Galveston Daily the exhibit display. I made an excellent opportunity mitted 146 entries for News, The Post, and it a point to be near the to become better edu- display. If you would like other Galveston County registration desk when cated at successfully to know what types of Newspapers. visitors enter the building. growing citrus through citrus can be grown It’s always fun to hear educational programs here, look over the fol- visitors say "It smells won- provided by Monte lowing list of ribbon and derful!" or "What a de- Nesbitt from Texas A&M rosette winners. lightful range of fra- in College Station.
    [Show full text]
  • 52 EFFECT of SALINITY on CITRUS Serra HEPAKSOY Ege University
    ANADOLU, J. of AARI 10 (1) 2000, 52 - 72 MARA EFFECT OF SALINITY ON CITRUS Serra HEPAKSOY Ege University Faculty of Agriculture Department of Horticulture Bornova-Đzmir/TURKEY ABSTRACT: Citrus is a salt sensitive crop. Salinity significantly limits citrus production in many areas worldwide. Saline irrigation water reduces the yields of citrus. Fruit yields decrease about 13 -1 % for each 1.0 dS m increase in electrical conductivity of the saturated-soil extract (EC e) once soil -1 - + salinity exceeds a threshold (EC e) of 1.4 dS m . Accumulation of excess Cl and Na can cause specific ion toxicities but this problem can be minimized by selecting rootstocks. The objective of this study is summarized the recent literature with regard to respond of citrus to salinity. About eighty papers were reviewed from 1950 to-date. Results of the literature review were summarized in three tables. Keywords: Citrus spp. , salinity, salt stress, morphological effects, chemical effects, rootstock, scion TUZLULUĞUN TURUNÇGĐLLERE ETKĐSĐ ÖZ: Turunçgiller tuza karşı hassas bitkilerdir. Dünyanın birçok bölgesinde tuzluluk turunçgil üretimini önemli şekilde sınırlandırır. Tuzlu sulama suyu turuçgillerde verimi düşürür. Toprak ekstraktı -1 elektriksel geçirgenliğindeki (EC e) her 1,0 dS m lik artış, turunçgillerde yaklaşık % 13'lük verim düşüşlerine neden olmaktadır. Aşırı Cl - ve Na + alınımı toksisiteye neden olur, ancak bu sorun uygun anaçların seçimi ile bir miktar azaltılabilir. Bu derlemenin amacı tuzluluğun turunçgiller üzerindeki etkileri ile ilgili kaynakları özetlemektir. 1950’den günümüze kadar yayınlanan yaklaşık 80 literatür özetlenmiştir. Ayrıca sonuçların bir kısmı 3 tabloda da ortaya konulmuştur. Anahtar Sözcükler: Turunçgiller, Citrus spp ., tuzluluk, morfolojik etki, kimyasal etki, anaç, kalem INTRODUCTION Citrus species belong to the subfamily Aurantioideae in the family Rutaceae .
    [Show full text]
  • In Vitro Production of Autotetraploid Ponkan Mandarin (Citrus Reticulata Blanco) Using Cell Suspension Cultures
    Euphytica (2010) 173:235–242 DOI 10.1007/s10681-009-0098-y In vitro production of autotetraploid Ponkan mandarin (Citrus reticulata Blanco) using cell suspension cultures M. Dutt • M. Vasconcellos • K. J. Song • F. G. Gmitter Jr. • J. W. Grosser Received: 10 March 2009 / Accepted: 7 December 2009 / Published online: 22 December 2009 Ó Springer Science+Business Media B.V. 2009 Abstract An efficient protocol for colchicine med- Keywords Autotetraploid Á Cell suspension Á iated production of in vitro autotetetraploids from Citrus reticulata Á Colchicine Á Ponkan mandarin using cell suspension cultures is Enzymatic maceration Á Flow cytometry described. Cells were treated with 1 g l-1 colchicine for 4 or 8 days before transfer into solid EME Abbreviations medium supplemented with 5% maltose. Colchicine DAPI 40,6-Diamidino-2-phenylindole treated cells were placed in medium with or without MT Murashige and Tucker an overlay of 1:2 medium–mixture of liquid 0.6 M UV Ultraviolet BH3 medium and 0.15 M EME ? maltose liquid media. It was observed that modifying the immediate cell environment by addition of the liquid overlay played a positive role in cell differentiation and Introduction subsequent plant regeneration. Ploidy levels were determined with a flow cytometer and confirmed by Ponkan mandarin (Citrus reticulata Blanco) is one of chromosome staining using the enzymatic maceration the most important commercial mandarin cultivars, method. A large number of non-chimeric autotetrap- cultivated extensively in many countries of the world loids were generated using this method. Such plants of which China and Brazil are the major producers. have great value in a breeding program for the Although the fruit is sweet and easy to peel, it is development of seedless triploid citrus, as very few seedy, which makes it less consumer friendly (Li available tetraploid breeding parents are easy to peel.
    [Show full text]
  • Redalyc.Production Regularity of 'Ponkan' Mandarin Trees Submitted
    Semina: Ciências Agrárias ISSN: 1676-546X [email protected] Universidade Estadual de Londrina Brasil Monteiro Cruz, Maria do Céu; Amato Moreira, Rodrigo Production regularity of ‘Ponkan’ mandarin trees submitted to chemical thinning Semina: Ciências Agrárias, vol. 33, núm. 6, noviembre-diciembre, 2012, pp. 2163-2171 Universidade Estadual de Londrina Londrina, Brasil Available in: http://www.redalyc.org/articulo.oa?id=445744116013 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative DOI: 10.5433/1679-0359.2012v33n6p2163 Production regularity of ‘Ponkan’ mandarin trees submitted to chemical thinning Regularidade de produção de tangerineira ‘Ponkan’ submetida a raleio químico Maria do Céu Monteiro Cruz 1* ; Rodrigo Amato Moreira 2 Abstract Alternate bearing is a problem that has inuenced the productivity and fruits quality of ‘Ponkan’ mandarin trees. The aim of this research was to evaluate the effect of chemical thinning on alternate bearing and productivity of ‘Ponkan’ mandarin tree. Ten-year-old plants grafted on ‘Rangpur’ lime (Citrus limonia Osbeck) were evaluated in a commercial orchard from December 2006 to July 2008. Five Ethephon concentrations were applied: 0, 150, 300, 450 and 600 mg L -1 in two fruit development stages (30 mm and 40 mm of transverse diameter). The experiment was set in a 5×2 factorial scheme, in randomized blocks with four replications. In the rst year after chemical thinning with Ethephon the productivity was evaluated in plants of different treatments.
    [Show full text]