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New Acid Citrus Selections for Florida
New acid citrus selections for Florida Lemon and lime-like selections with niche market potential are being developed with biotechnology at the University of Florida. By Jude Grosser, Zenaida Viloria and Manjul Dutt re you ready for a purple margarita? Would you like a fragrant, juicy lime is a naturally occurring citrus lemon for your iced tea with no seeds to clog your straw or dishwasher triploid, which is why it is seedless. drain? How about some seedless lime trees that are cold-hardy enough The new seedless watermelons in the Afor Central Florida? These and many more interesting acid-citrus marketplace are also triploids. selections are now on the horizon, including some with good ornamental potential. Due to the fact that new and This article will focus on progress in using emerging biotechnologies to develop improved citrus cultivars must be interesting new citrus cultivars in the lemon and lime group. Cultivars include seedless to compete in the national some that will not have regulatory constraints, and also a genetically modified and international marketplace, the organism (GMO)-derived purple Key lime as a teaser for the future. University of Florida’s Citrus Research and Education Center (UF/CREC) LEARNING FROM they are triploids. People and most citrus improvement team (working THE BANANA citrus trees are diploid, meaning with Fred Gmitter) has formulated Have you ever wondered why you there are two sets of chromosomes in several ways to create triploids as a key never find seeds in your bananas? Did each cell. Triploid bananas have three method of developing seedless citrus you know that there are wild-type sets of chromosomes per cell. -
"Performance of Citrus Scion Cultivars and Rootstocks in a High-Density
REPORTS HORTSCIENCE 26(7):837-840. 1991. house and planted in the field in 1981. A split plot experiment and analysis of variance Performance of Citrus Scion Cultivars (ANOVA) statistics were used with four rep- lications, with cultivar as the main plot and and Rootstock in a High-density rootstock as the subplot. Field plots were four ´ four trees, with data taken from the Planting center four of the 16 trees. They were planted 1.5 m in the row and 3.3 m between rows T.A. Wheaton, W.S. Castle, J.D. Whitney, and D.P.H. Tucker and were irrigated and fertigated as required Citrus Research and Education Center, University of Florida, Institute of to maintain optimal soil water and nutrient levels using one microsprinkler per two trees. Food and Agricultural Sciences, 700 Experiment Station Road, Lake Trees were mechanically hedged and topped Alfred, FL 33850 during Summer 1987 and hedged again in 1989 to maintain a 1.5-m alley between rows Additional index words. tree spacing, yield efficiency and a 2.5-m tree height. Thus, the canopy Abstract. ‘Hamlin’ and ‘Valencia’ oranges [Citrus sinensis (L.) Osb.], ‘Murcott’ tangor size allocated for each tree was 1.5 m in the (C. reticulata Blanco ´ C. sinensis), and ‘Redblush’ grapefruit (C. paradisi Macf.) on row, 1.8 m across the row, and 2.5 m in 15 rootstock and own-rooted cuttings were planted at a 1.5 ´ 3.3-m spacing providing height, providing 6.8 m3 of canopy volume a density of 2020 trees/ha. -
Known Host Plants of Huanglongbing (HLB) and Asian Citrus Psyllid
Known Host Plants of Huanglongbing (HLB) and Asian Citrus Psyllid Diaphorina Liberibacter citri Plant Name asiaticus Citrus Huanglongbing Psyllid Aegle marmelos (L.) Corr. Serr.: bael, Bengal quince, golden apple, bela, milva X Aeglopsis chevalieri Swingle: Chevalier’s aeglopsis X X Afraegle gabonensis (Swingle) Engl.: Gabon powder-flask X Afraegle paniculata (Schum.) Engl.: Nigerian powder- flask X Atalantia missionis (Wall. ex Wight) Oliv.: see Pamburus missionis X X Atalantia monophylla (L.) Corr.: Indian atalantia X Balsamocitrus dawei Stapf: Uganda powder- flask X X Burkillanthus malaccensis (Ridl.) Swingle: Malay ghost-lime X Calodendrum capense Thunb.: Cape chestnut X × Citroncirus webberi J. Ingram & H. E. Moore: citrange X Citropsis gilletiana Swingle & M. Kellerman: Gillet’s cherry-orange X Citropsis schweinfurthii (Engl.) Swingle & Kellerm.: African cherry- orange X Citrus amblycarpa (Hassk.) Ochse: djerook leemo, djeruk-limau X Citrus aurantiifolia (Christm.) Swingle: lime, Key lime, Persian lime, lima, limón agrio, limón ceutí, lima mejicana, limero X X Citrus aurantium L.: sour orange, Seville orange, bigarde, marmalade orange, naranja agria, naranja amarga X Citrus depressa Hayata: shiikuwasha, shekwasha, sequasse X Citrus grandis (L.) Osbeck: see Citrus maxima X Citrus hassaku hort. ex Tanaka: hassaku orange X Citrus hystrix DC.: Mauritius papeda, Kaffir lime X X Citrus ichangensis Swingle: Ichang papeda X Citrus jambhiri Lushington: rough lemon, jambhiri-orange, limón rugoso, rugoso X X Citrus junos Sieb. ex Tanaka: xiang -
Marketing Standards for Citrus Fruits
COMMISSION IMPLEMENTING REGULATION (EU) No 543/2011 of 7 June 2011 laying down detailed rules for the application of Council Regulation (EC) No 1234/2007 in respect of the fruit and vegetables and processed fruit and vegetables sectors. CONSOLIDATED TEXT: Annex I; Part 2 of Part B MARKETING STANDARD FOR CITRUS FRUIT I. DEFINITION OF PRODUCE This standard applies to citrus fruit of varieties (cultivars) grown from the following species, to be supplied fresh to the consumer, citrus fruit for industrial processing being excluded: - lemons grown from the species Citrus limon (L.) Burm. f. and hybrids thereof, - mandarins grown from the species Citrus reticulata Blanco, including satsumas (Citrus unshiu Marcow), clementines (Citrus clementina hort. ex Tanaka), common mandarins (Citrus deliciosa Ten.) and tangerines (Citrus tangerina Tanaka) grown from these species and hybrids thereof, - oranges grown from the species Citrus sinensis (L.) Osbeck and hybrids thereof. II. PROVISIONS CONCERNING QUALITY The purpose of the standard is to define the quality requirements for citrus fruit after preparation and packaging. However, at stages following dispatch products may show in relation to the requirements of the standard: - a slight lack of freshness and turgidity, - for products graded in classes other than the “Extra” Class, a slight deterioration due to their development and their tendency to perish. A. Minimum requirements In all classes, subject to the special provisions for each class and the tolerances allowed, the citrus fruit must be: - intact, - free of bruising and/or extensive healed overcuts, CI.1 - sound; produce affected by rotting or deterioration such as to make it unfit for consumption is excluded, - clean, practically free of any visible foreign matter, - practically free from pests, - free from damage caused by pests affecting the flesh, - free of signs of shrivelling and dehydration, - free of damage caused by low temperature or frost, - free of abnormal external moisture, - free of any foreign smell and/or taste. -
Citrus Trifoliata (Rutaceae): Review of Biology and Distribution in the USA
Nesom, G.L. 2014. Citrus trifoliata (Rutaceae): Review of biology and distribution in the USA. Phytoneuron 2014-46: 1–14. Published 1 May 2014. ISSN 2153 733X CITRUS TRIFOLIATA (RUTACEAE): REVIEW OF BIOLOGY AND DISTRIBUTION IN THE USA GUY L. NESOM 2925 Hartwood Drive Fort Worth, Texas 76109 www.guynesom.com ABSTRACT Citrus trifoliata (aka Poncirus trifoliata , trifoliate orange) has become an aggressive colonizer in the southeastern USA, spreading from plantings as a horticultural novelty and use as a hedge. Its currently known naturalized distribution apparently has resulted from many independent introductions from widely dispersed plantings. Seed set is primarily apomictic and the plants are successful in a variety of habitats, in ruderal habits and disturbed communities as well as in intact natural communities from closed canopy bottomlands to open, upland woods. Trifoliate orange is native to southeastern China and Korea. It was introduced into the USA in the early 1800's but apparently was not widely planted until the late 1800's and early 1900's and was not documented as naturalizing until about 1910. Citrus trifoliata L. (trifoliate orange, hardy orange, Chinese bitter orange, mock orange, winter hardy bitter lemon, Japanese bitter lemon) is a deciduous shrub or small tree relatively common in the southeastern USA. The species is native to eastern Asia and has become naturalized in the USA in many habitats, including ruderal sites as well as intact natural commmunities. It has often been grown as a dense hedge and as a horticultural curiosity because of its green stems and stout green thorns (stipular spines), large, white, fragrant flowers, and often prolific production of persistent, golf-ball sized orange fruits that mature in September and October. -
Texas Big Tree Registry a List of the Largest Trees in Texas Sponsored by Texas a & M Forest Service
Texas Big Tree Registry A list of the largest trees in Texas Sponsored by Texas A & M Forest Service Native and Naturalized Species of Texas: 320 ( D indicates species naturalized to Texas) Common Name (also known as) Latin Name Remarks Cir. Threshold acacia, Berlandier (guajillo) Senegalia berlandieri Considered a shrub by B. Simpson 18'' or 1.5 ' acacia, blackbrush Vachellia rigidula Considered a shrub by Simpson 12'' or 1.0 ' acacia, Gregg (catclaw acacia, Gregg catclaw) Senegalia greggii var. greggii Was named A. greggii 55'' or 4.6 ' acacia, Roemer (roundflower catclaw) Senegalia roemeriana 18'' or 1.5 ' acacia, sweet (huisache) Vachellia farnesiana 100'' or 8.3 ' acacia, twisted (huisachillo) Vachellia bravoensis Was named 'A. tortuosa' 9'' or 0.8 ' acacia, Wright (Wright catclaw) Senegalia greggii var. wrightii Was named 'A. wrightii' 70'' or 5.8 ' D ailanthus (tree-of-heaven) Ailanthus altissima 120'' or 10.0 ' alder, hazel Alnus serrulata 18'' or 1.5 ' allthorn (crown-of-thorns) Koeberlinia spinosa Considered a shrub by Simpson 18'' or 1.5 ' anacahuita (anacahuite, Mexican olive) Cordia boissieri 60'' or 5.0 ' anacua (anaqua, knockaway) Ehretia anacua 120'' or 10.0 ' ash, Carolina Fraxinus caroliniana 90'' or 7.5 ' ash, Chihuahuan Fraxinus papillosa 12'' or 1.0 ' ash, fragrant Fraxinus cuspidata 18'' or 1.5 ' ash, green Fraxinus pennsylvanica 120'' or 10.0 ' ash, Gregg (littleleaf ash) Fraxinus greggii 12'' or 1.0 ' ash, Mexican (Berlandier ash) Fraxinus berlandieriana Was named 'F. berlandierana' 120'' or 10.0 ' ash, Texas Fraxinus texensis 60'' or 5.0 ' ash, velvet (Arizona ash) Fraxinus velutina 120'' or 10.0 ' ash, white Fraxinus americana 100'' or 8.3 ' aspen, quaking Populus tremuloides 25'' or 2.1 ' baccharis, eastern (groundseltree) Baccharis halimifolia Considered a shrub by Simpson 12'' or 1.0 ' baldcypress (bald cypress) Taxodium distichum Was named 'T. -
Supplementary Material for RUSSELL, DYRANA N., JAWWAD A
Supplementary Material for RUSSELL, DYRANA N., JAWWAD A. QURESHI, SUSAN E. HALBERT AND PHILIP A. STANSLY−Host Suitability of Citrus and Zanthoxylum Spp. for Leuronota fagarae and Diaphorina citri (Hemiptera: Psylloidea). Florida Entomologist 97(4) (December 2014) at http://purl.fcla.edu/fcla/entomologist/browse Corresponding author: Dr. J. A. Qureshi University of Florida/IFAS Southwest Florida Research and Education Center (SWFREC) 2685 SR 29N, Immokalee, Fl 34142, USA Phone: (239) 658-3400 Fax: (239) 658-3469 E-mail: [email protected] ABSTRACT Leuronota fagarae Burckhardt (Hemiptera: Psylloidea), an exotic psyllid described from South America, was first observed in 2001on a citrus relative Zanthoxylum fagara (L.) Sarg. (Sapindales: Rutaceae) in southern Florida. Diaphorina citri Kuwayama (Hemiptera: Psylloidea) is principal vector of the bacteria ‘Candidatus Liberibacter spp.’ causal agent of huanglongbing (HLB) or citrus greening disease. Both vector and disease are now well established in Florida and also reported throughout the Americas and Asia. The host range of D. citri is limited to citrus and some rutaceous relatives. Additional vectors and host plants could accelerate spread of HLB in citrus and threaten endangered species such as Zanthoxylum coriaceum A. Rich. and Zanthoxylum flavum Vahl. Experiments were conducted to evaluate adult survival, reproduction and nymphal development of psyllids on 3 Citrus and 4 Zanthoxylum species as well as orange jasmine, Murraya paniculata (Syn. M. exotica) (Sapindales: Rutaceae), a common ornamental and preferred host of D. citri. Leuronota fagarae in single male−female pairs at 24 °C lived an average 4-47 days, 4-12 fold longer on Zanthoxylum spp. (except Z. flavum) than on citrus. -
Tetraploid Citrumelo 4475 Rootstocks Improve Diploid Common
www.nature.com/scientificreports OPEN Tetraploid Citrumelo 4475 rootstocks improve diploid common clementine tolerance to long‑term nutrient defciency Julie Oustric1*, Stéphane Herbette2, Yann Quilichini3, Raphaël Morillon4,5, Jean Giannettini1, Liliane Berti1 & Jérémie Santini1 Nutrient defciency alters growth and the production of high‑quality nutritious food. In Citrus crops, rootstock technologies have become a key tool for enhancing tolerance to abiotic stress. The use of doubled diploid rootstocks can improve adaptation to lower nutrient inputs. This study investigated leaf structure and ultrastructure and physiological and biochemical parameters of diploid common clementine scions (C) grafted on diploid (2x) and doubled diploid (4x) Carrizo citrange (C/CC2x and C/CC4x) and Citrumelo 4475 (C/CM2x and C/CM4x) rootstocks under optimal fertigation and after 7 months of nutrient defciency. Rootstock ploidy level had no impact on structure but induced changes in the number and/or size of cells and some cell components of 2x common clementine leaves under optimal nutrition. Rootstock ploidy level did not modify gas exchanges in Carrizo citrange but induced a reduction in the leaf net photosynthetic rate in Citrumelo 4475. By assessing foliar damage, changes in photosynthetic processes and malondialdehyde accumulation, we found that C/CM4x were less afected by nutrient defciency than the other scion/rootstock combinations. Their greater tolerance to nutrient defciency was probably due to the better performance of the enzyme‑based antioxidant system. Nutrient defciency had similar impacts on C/CC2x and C/CC4x. Tolerance to nutrient defciency can therefore be improved by rootstock polyploidy but remains dependent on the rootstock genotype. Fruit crops, especially citrus fruits, require large amounts of fertilizers to ensure good production and fruit qual- ity. -
Survey of Phenolic Compounds Produced in Citrus
USDA ??:-Z7 S rveyof Phenolic United States Department of Agriculture C mpounds Produced IliIIiI Agricultural Research In Citrus Service Technical Bulletin Number 1856 December 1998 United States Department of Agriculture Survey of Phenolic Compounds Agricultural Produced in Citrus Research Service Mark Berhow, Brent Tisserat, Katherine Kanes, and Carl Vandercook Technical Bulletin Number 1856 December 1998 This research project was conducted at USDA, Agricultural Research Service, Fruit and Vegetable Chem istry laboratory, Pasadena, California, where Berhow was a research chemist, TIsserat was a research geneticist, Kanes was a research associate, and Vandercook, now retired, was a research chemist. Berhow and Tisserat now work at the USDA-ARS National Center for AgriCUltural Utilization Research, Peoria, Illinois, where Berhow is a research chemist and Tisserat is a research geneticist. Abstract Berhow, M., B. Tisserat, K. Kanes, and C. Vandercook. 1998. Survey of Mention of trade names or companies in this publication is solely for the Phenolic Compounds Produced in Citrus. U.S. Department ofAgriculture, purpose of providing specific information and does not imply recommenda Agricultural Research Service, Technical Bulletin No. 1856, 158 pp. tion or endorsement by the U. S. Department ofAgriculture over others not mentioned. A survey of phenolic compounds, especially flavanones and flavone and flavonol compounds, using high pressure liquid chromatography was While supplies last, single copies of this publication may be obtained at no performed in Rutaceae, subfamily Aurantioideae, representing 5 genera, cost from- 35 species, and 114 cultivars. The average number of peaks, or phenolic USDA, ARS, National Center for Agricultural Utilization Research compounds, occurring in citrus leaf, flavedo, albedo, and juice vesicles 1815 North University Street were 21, 17, 15, and 9.3, respectively. -
Known Host Plants of Huanglongbing (HLB) and Asian Citrus Psyllid
Known Host Plants of Huanglongbing (HLB) and Asian Citrus Psyllid Diaphorina Liberibacter citri Plant Name asiaticus Citrus Huanglongbing Psyllid Aegle marmelos (L.) Corr. Serr.: bael, Bengal quince, golden apple, bela, milva X Aeglopsis chevalieri Swingle: Chevalier’s aeglopsis X X Afraegle gabonensis (Swingle) Engl.: Gabon powder-flask X Afraegle paniculata (Schum.) Engl.: Nigerian powder- flask X Artocarpus heterophyllus Lam.: jackfruit, jack, jaca, árbol del pan, jaqueiro X Atalantia missionis (Wall. ex Wight) Oliv.: see Pamburus missionis X X Atalantia monophylla (L.) Corr.: Indian atalantia X Balsamocitrus dawei Stapf: Uganda powder- flask X X Burkillanthus malaccensis (Ridl.) Swingle: Malay ghost-lime X Calodendrum capense Thunb.: Cape chestnut X × Citroncirus webberi J. Ingram & H. E. Moore: citrange X Citropsis gilletiana Swingle & M. Kellerman: Gillet’s cherry-orange X Citropsis schweinfurthii (Engl.) Swingle & Kellerm.: African cherry- orange X Citrus amblycarpa (Hassk.) Ochse: djerook leemo, djeruk-limau X Citrus aurantiifolia (Christm.) Swingle: lime, Key lime, Persian lime, lima, limón agrio, limón ceutí, lima mejicana, limero X X Citrus aurantium L.: sour orange, Seville orange, bigarde, marmalade orange, naranja agria, naranja amarga X Citrus depressa Hayata: shiikuwasha, shekwasha, sequasse X Citrus grandis (L.) Osbeck: see Citrus maxima X Citrus hassaku hort. ex Tanaka: hassaku orange X Citrus hystrix DC.: Mauritius papeda, Kaffir lime X X Citrus ichangensis Swingle: Ichang papeda X Citrus jambhiri Lushington: rough lemon, jambhiri-orange, limón rugoso, rugoso X X Citrus junos Sieb. ex Tanaka: xiang cheng, yuzu X Citrus kabuchi hort. ex Tanaka: this is not a published name; could they mean Citrus kinokuni hort. ex Tanaka, kishu mikan? X Citrus limon (L.) Burm. -
High Biological Value Compounds Extraction from Citrus Waste with Non-Conventional Methods
foods Review High Biological Value Compounds Extraction from Citrus Waste with Non-Conventional Methods Mayra Anticona, Jesus Blesa , Ana Frigola and Maria Jose Esteve * Nutrition and Food Chemistry, University of Valencia, Avda., Vicent Andrés Estellés, s/n., 46100 Burjassot, Spain; [email protected] (M.A.); [email protected] (J.B.); [email protected] (A.F.) * Correspondence: [email protected]; Tel.: +34-963544913 Received: 27 April 2020; Accepted: 15 June 2020; Published: 20 June 2020 Abstract: Citrus fruits are extensively grown and much consumed around the world. Eighteen percent of total citrus cultivars are destined for industrial processes, and as a consequence, large amounts of waste are generated. Citrus waste is a potential source of high biological value compounds, which can be used in the food, pharmaceutical, and cosmetic industries but whose final disposal may pose a problem due to economic and environmental factors. At the same time, the emerging need to reduce the environmental impact of citrus waste and its responsible management has increased. For these reasons, the study of the use of non-conventional methods to extract high biological value compounds such as carotenoids, polyphenols, essential oils, and pectins from this type of waste has become more urgent in recent years. In this review, the effectiveness of technologies such as ultrasound assisted extraction, microwave assisted extraction, supercritical fluid extraction, pressurized water extraction, pulsed electric field, high-voltage electric discharges, and high hydrostatic pressures is described and assessed. A wide range of information concerning the principal non-conventional methods employed to obtain high-biological-value compounds from citrus waste as well as the most influencing factors about each technology are considered. -
Citrus Industry Biosecurity Plan 2015
Industry Biosecurity Plan for the Citrus Industry Version 3.0 July 2015 PLANT HEALTH AUSTRALIA | Citrus Industry Biosecurity Plan 2015 Location: Level 1 1 Phipps Close DEAKIN ACT 2600 Phone: +61 2 6215 7700 Fax: +61 2 6260 4321 E-mail: [email protected] Visit our web site: www.planthealthaustralia.com.au An electronic copy of this plan is available through the email address listed above. © Plant Health Australia Limited 2004 Copyright in this publication is owned by Plant Health Australia Limited, except when content has been provided by other contributors, in which case copyright may be owned by another person. With the exception of any material protected by a trade mark, this publication is licensed under a Creative Commons Attribution-No Derivs 3.0 Australia licence. Any use of this publication, other than as authorised under this licence or copyright law, is prohibited. http://creativecommons.org/licenses/by-nd/3.0/ - This details the relevant licence conditions, including the full legal code. This licence allows for redistribution, commercial and non-commercial, as long as it is passed along unchanged and in whole, with credit to Plant Health Australia (as below). In referencing this document, the preferred citation is: Plant Health Australia Ltd (2004) Industry Biosecurity Plan for the Citrus Industry (Version 3.0 – July 2015). Plant Health Australia, Canberra, ACT. Disclaimer: The material contained in this publication is produced for general information only. It is not intended as professional advice on any particular matter. No person should act or fail to act on the basis of any material contained in this publication without first obtaining specific and independent professional advice.