DOCSLIB.ORG

Influence of Bio and Chemical Fertilization on Croton Production

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Influence of Bio and Chemical Fertilization on Croton Production Assiut J. Agric. Sci., (48) No. (3) 2017 (112-122) ISSN: 1110-0486 Website: http://www.aun.edu.eg/faculty_agriculture E-mail: [email protected] Influence of Bio and Chemical Fertilization on Croton Production 1Antoniadis Research Branch, Horticultural Research Alexandria, Egypt 2Department of soil physics and chemistry, Desert Research Center, Egypt Received on: 28/3/2017 Accepted for publication on: 5/4/2017 Abstract The present study was carried out during the two seasons of 2014/ 2015 and 2015/2016 in Nubaria region, west of Alexandria city, Egypt. A pot experiment conducted to examine the possibility of producing Codiaeum variegatum L. plants under lower levels of NPK chemical fertilizer doses by using some biofer- tilizers. Five tested treatments were used including control, full mineral NPK dose (36 g of ammonium sulphate, 20.5% N, 24 g of calcium super phosphate, 15 % P2O2 and 12 g of potassium sulphate, 48% K2O,) per plant, 1/2 inorganic NPK dose + 1 g nitrobein, 1/2 inorganic NPK dose + 1 g phosphorien, and 1/2 inor- ganic NPK dose + 1 g nitrobein + 1 g phosphorein. The obtained results indicated that the different vegetative growth characters as well as chemical constituents of croton plants were considerably augmented due to various mineral NPK or 1/2 NPK + biofertilizers. The best results were obtained by mineral full NPK dose and the half dose of NPK plus nitrobein and phosphorein biofertilizers. Such two superior treatments gave almost equal results which assure the possibility of re- placing one half of the chemical NPK by the use of some N- fixing and P- dissolving bacteria biofertilizers in producing ornamental shrubs such as Codi- aeum variegatum. Keywords: Bio fertilizers, Croton, Mineral fertilization, Loamy sand. Introduction well as illustrated by Brickell, (1988). Codiaeum variegatum (L.) A. The cultivar God Star plant is a Juss plants (Crotons) are members of commonly seen croton; it is a shrub the "Euphorbiaceae" family. Crotons that has bright green leaves with have been popular in tropical and flecks of gold all over leaves and sub-tropical garden for countries, but, hence, the name became. It is a very only in recent years, they become pretty plant and can be used to create popular indoor plants. The croton a hedge when planted close together. plants are used and grown for the at- It makes attractive specimens as re- tractive foliage which is available in ported by Rodriguez and Rohde, many brilliant colors. It is an orna- (2006). mental evergreen shrub with alter- Mineral N, P and K fertilizers nate, simple leaves that used in con- could be substituted partially by N- tainers and bed. A mature plant will fixing and P- dissolving bacteria in grow about six feet tall and does well order to reduce the environmental in sun or part shade. For planted out- pollution and cost expenditure. Many door, crotons are tolerant in sandy investigators reported the enhancing soils and they tolerate salt air near the effect of NPK fertilization on vegeta- beach. They tolerate heat extremely tive growth characters, photosyn- Sohier, G. El-Sayed and Sahar, M. Ismail, 2017 http://ajas.js.iknito.com/ thetic pigments, and N, P and K up- chemical composition of different take of croton plants (Conover and woody plants. So, the objective of Pool, 1983; Mohamed et al., 2004; this research was to study the effect Karm et al., 2009). Based on a study of different chemical and bio fertiliz- carried out by El-Aziz et al., (2007), ers on morphological, chemical con- croton plants had higher growth at the stituents, production of croton plants lowest level fertilizer suggesting the and find out the best treatment of fer- use of lower rates of controlled re- tilization (bio-and chemical fertiliz- lease fertilizer (CRF). Also, Younis et ers) for the best vegetative growth. al., (2010) mentioned that different Materials and Methods growing media on croton plant gave A pot experiment was carried the best result of quality production. out during two successive seasons of Using of microorganisms as biofertil- 2014/ 2015 and 2015/2016 in Nubaria izer improves the soil characters. The region, west of Alexandria city, fixed nitrogen solubilized mineral nu- Egypt. It is applied by replacement of trients, synthesis of the vitamins, 1/2 of chemical NPK fertilizers by N amino acids, auxins and gibberellins, and P biofertilizers in producing which stimulate the plant growth Codiaeum variegatum plants. Rooted come as a result of inoculation by terminal cuttings of croton (Codi- these microorganisms (El-Merich et aeum variegatum L) cv. Pictum var. al., 1997), However, Nath and Das, "Gold Star" of 14 to 16 cm height and (1995), Vashight and Sharma, (2003); 4 to 6 leaves were transplanted on the El-Fawakhry et al. (2004), Gabera, 10th of April in both seasons. To plas- (2004), Younis et al.(2004), kandeel tic pots of 25 cm in diameter that et al. (2004), Soliman, (2005), Sha- filled with a mixed soil (3clay: 1 sand heen and Abd-El-Wahab, (2013), w/w), one cutting was put. The mix- Abdullahi et al. (2014); Niharik, ture well done inside each pot. The (2015) and Zare et al. (2015), proved chemical and physical characteristics the efficiency of combining N- fixing of the used mixed soil were deter- and P- dissolving bacteria partially mined according to the methods out- with NPK chemical fertilizers on lined by Page et al. (1982) and listed improving of vegetative growth and in Table (1). Table 1. Some chemical and physical properties of the mixed soil a by 3: 1 clay to sandy loam soil E.C Available Mechanical analy- pH Organic CEC Total car- (dsm-1) nutrients sis (%) -1 matter (cmol+/kg bonates (Soil paste (mg kg ) Sand Silt clay (1:2.5) (%) soil) (%) extraction) N P K 43 20 37 4.32 8.20 12 5 95 0.67 25 11.25 Texture : clay loam One month from planting, the tested, namely 1) control (unfertilized experiment was arranged in com- plants), 2) full mineral NPK dose (36 pletely randomized block design with g ammonium sulphate, 20.5% N, 24 g three replications (plant / replication). calcium super phosphate, 15 % P2O5 Five fertilization treatments were and 12 g potassium sulphate, 48.5% 113 Assiut J. Agric. Sci., (48) No. (3) 2017 (112-122) ISSN: 1110-0486 Website: http://www.aun.edu.eg/faculty_agriculture E-mail: [email protected] K2O / plant, 3) 1/2 of the above men- a and b and carotenoid content of the tioned NPK dose + 1g nitrobein (N- leaves (mg/g F.W.) were estimated in fixing bacteria), 4) 1/2 of the above the second week of August. accord- mentioned NPK dose + 1 g phos- ing to Fadl and Seri- Eldeen, (1978). phorein and 5) 1/2 NPK + 1 g of ni- Also N, P and K contents of the trobein + 1 g phosphorein. Biofertil- leaves were determined according to izers (nitrobein and phosphorein) Page et al., (1982). Obtained data were applied as a soil drench after 2 were statistically analyzed according weeks from the final transplanting to Steel and Torrei, (1960). and after 40 days from the first addi- Results tion at the level of 1 g / pot at each Vegetative Growth Characters: time, while mineral N, P and K All tested vegetative growth amounts were divided into four equal traits, namely plant height, stem di- doses; the first dose was added after ameter, number of leaves as well as one month from transplanting and the fresh and dry weights of leaves, three other doses were applied after stems, and roots of Codiaeum varie- 21 days from the first one with 30 gatum plants were significantly aug- days interval periods among them mented in both seasons due to all four during the growth season. The ex- treatments, in comparison with the periment continued eight months control. Among the four fertilization from planting and the harvest was in treatments, the highest values were December. Other agricultural prac- obtained from full dose of NPK treat- tices were performed as usual. At the ment and 1/2 NPK dose + NP biofer- end of the experiment in both sea- tilizers as shown in Tables (2a, 2b sons, data were recorded for plant and 2c). However, no significant dif- height (cm), stem diameter (cm), ferences were found between such number of leaves per seedling and two treatments for plant height, stem fresh and dry weight of leaves, stems diameter and fresh and dry weights of and roots (g). In addition, chlorophyll leaves and roots in the both seasons. Table 2a. Effect of mineral NPK and (NP) biofertilization treatments on plant height, stem diameter, and number of leaves of Codiaeum variegatum plants during the two seasons of 2015 (1st) and 2016 (2nd). Plant height Stem diameter NPK/Biofertilizer No. of leaves (cm) (cm) treatments 1st 2nd 1st 2nd 1st 2nd Control 38.70 39.70 0.59 0.53 50.90 55.11 NPK 51.17 52.21 0.76 0.79 63.00 66.40 1/2 NPK+Bio.N 45.00 47.41 0.65 0.64 60.00 60.80 1/2 NPK+Bio.P 44.00 45.35 0.63 0.63 58.40 58.20 1/2 NPK+Bio.NP 46.07 49.69 0.67 0.72 61.11 62.00 L.S.D at 5% 4.99 5.49 0.10 0.08 7.40 8.60 114 Sohier, G. El-Sayed and Sahar, M. Ismail, 2017 http://ajas.js.iknito.com/ Table 2b. Effect of mineral NPK and (NP) biofertilization treatments on fresh weight of leaves, stems and roots of Codiaeum variegatum plant during the two seasons of 2015 (1st ) and 2016 (2nd).
Load more

Recommended publications
  • Croton Production and Use1 Robert H
    ENH878 Croton Production and Use1 Robert H. Stamps and Lance S. Osborne2 FAMILY: Euphorbiaceae GENUS: Codiaeum SPECIFIC EPITHET: variegatum CULTIVARS: ‘Banana’, ‘Gold Dust’, ‘Mammy’, ‘Norma’, ‘Petra’, ‘Sunny Star’ and many others. Crotons have been popular in tropical gardens for centuries. Crotons grow into shrubs and small trees in their native habitats of India, Malaysia, and some of the South Pacific islands. Few other plants can surpass them in both foliage color and leaf shape variation. Leaf colors range from reds, oranges and yellows to green with all combinations of variegated colors. Leaf shapes vary from broad and elliptical to narrow and almost linear. Leaf blades range from flat to cork-screw-shaped. Since some cultivars are tolerant of interior environments, crotons have also become very popular as interior potted foliage plants. One additional point, often overlooked, is that foliage of crotons Figure 1. Crotons are useful for adding color to floral arrangements, is excellent material for use in floral arrangements. Both landscapes, and interiorscapes. individual leaves and entire branches can be used in floral Credits: Robert Stamps, UF/IFAS designs. 1. This document is ENH878, one of a series of the Environmental Horticulture Department, UF/IFAS Extension. Original publication date December 2002. Revised Revised May 2009 and March 2019. Visit the EDIS website at https://edis.ifas.ufl.edu for the currently supported version of this publication. 2. Robert H. Stamps, professor of Environmental Horticulture and Extension Cut Foliage Specialist; and Lance S. Osborne, professor of Entomology; UF/ IFAS Mid-Florida Research and Education Center, Apopka, FL. The use of trade names in this publication is solely for the purpose of providing specific information.
    [Show full text]
  • Cuttings Picture Product Name Product Description Sizes Available
    Caribbean Cuts Plant Cuttings Picture Product Name Product Description Sizes Available Croton Petra Croton - “Croton 20 to 30 Cutting leaves”. These croton cuttings inches can add color to you arraingement, they are painted with yellow orange and red. They are available January, February, March, April, May, June, July, August, September, October, November and December Bacon Codiaeum Variegatum.“Croton 20 to 25 Croton leaves”. These croton cuttings inches can tones of red and black to your Arrangement. He leaves are long and skinny and have curls like bacon. They are available January, February, March, April, May, June, July, August, September, October, November and December 1 Picture Product Name Product Description Sizes Available Gold Codiaeum Variegatum. 15 to 20 Dust These croton leaves are filled inches Croton with green leaves with yellow spots. They are available January, February, March, April, May, June, July, August, September, October, November and December Sea Coccoloba Uvifera - 24 to 36 Grape SeaGrape leaf. These stalks inches Cutting come in 3 stem bunches and are generally 3.5 to 5 ft stalks. The circular leaves are unlike anything else in nature so they really catch your eye. They can be used by themselves or put into an arrangement with other flowers. They are unique to Caribbean Cuts and are available January, February, March, April, May, June, July, August, September, October, November and December 2 Picture Product Name Product Description Sizes Available Ti Cutting Cordyline Fruticosa - 4.5 ft Burgundy “Burgundy Ti” these ti stalks run 4 to 4.5 ft tall and have Burgundy leaves on the stalk.
    [Show full text]
  • Crotons in Hawaii
    University of Hawaii Cooperative Extension Service College of Tropical Agriculture and Human Resources Cl RCU LAR 433 Crotons inHawaii FRED D. RAUCH JAMES BARROWS DONALD P. WATSON ACKNOWLEDGMENTS The assistance of Wallace C. Mitchell, A. L. Martinez, and Horace F. Clay is appreciated. CROTON CUL TIVARS Left photo: Top row, left, 'Van Buren'; right, 'Harvest Moon'. Middle row, left, 'B. Comte' (Indian Blanket); right, 'Daisy Ortegas'. Bottom row, left, 'Stoplight'; right, 'Colonel Bob Bullock'. Right photo: Top row, left, 'L. M. Rutherford'; right, 'Irene Kingsley'. Middle row, left, 'McKenzie King'; right, 'Reedii'. Bottom row, left, 'Baron James De Rothschild' (Bermuda Red); right, 'Madame Fernand Kohl'. CONTENTS Page Introduction ..................................................................................................................................... 3 History.................................................................................................................................................... 3 Identification .................................................................................................................................. 4 Croton Cultivars............................................................................................................................ 7 Propagation ..................................................................................................................... ................... 8 Culture ·······················-···················································································································.·······
    [Show full text]
  • Quarantine Host Range and Natural History of Gadirtha Fusca, a Potential Biological Control Agent of Chinese Tallowtree (Triadica Sebifera) in North America
    DOI: 10.1111/eea.12737 Quarantine host range and natural history of Gadirtha fusca, a potential biological control agent of Chinese tallowtree (Triadica sebifera) in North America Gregory S. Wheeler1* , Emily Jones1, Kirsten Dyer1, Nick Silverson1 & Susan A. Wright2 1USDA/ARS Invasive Plant Research Laboratory, 3225 College Ave., Ft Lauderdale, FL 33314, USA, and 2USDA/ARS Invasive Plant Research Laboratory, Gainesville, FL 32608, USA Accepted: 23 August 2018 Key words: biocontrol, classical biological control, weed control, Euphorbiaceae, defoliating caterpillar, host range tests, invasive weeds, Sapium, Lepidoptera, Nolidae, integrated pest management, IPM Abstract Classical biological control can provide an ecologically sound, cost-effective, and sustainable manage- ment solution to protect diverse habitats. These natural and managed ecosystems are being invaded and transformed by invasive species. Chinese tallowtree, Triadica sebifera (L.) Small (Euphorbiaceae), is one of the most damaging invasive weeds in the southeastern USA, impacting wetlands, forests, and natural areas. A defoliating moth, Gadirtha fusca Pogue (Lepidoptera: Nolidae), was discovered feeding on Chinese tallowtree leaves in the weed’s native range and has been tested for its suitability as a biological control agent. Natural history studies of G. fusca indicated that the neonates have five instars and require 15.4 days to reach pupation. Complete development from egg hatch to adult emergence required 25.8 days. No differences were found between males and females in terms of life history and nutritional indices measured. Testing of the host range of G. fusca larvae was conducted with no-choice, dual-choice, and multigeneration tests and the results indicated that this species has a very narrow host range.
    [Show full text]
  • Cordyllne TERMINALIS (L.) KUNTH, the "HAWAIIAN TI PLANT"
    J. Ethnobiol. 9(1) :51-63 Summer 1989 SPECIAL PROBLEMS IN AN ETHNOBOTANICAL LITERATURE SEARCH: CORDYLlNE TERMINALIS (L.) KUNTH, THE "HAWAIIAN TI PLANT" CELIA EHRLICH Department of Anthropology State University of New York at Buffalo Amherst, NY 14261 ABSTRACT.-The different kinds of references to plants used by botanists, ethnographers and linguists may confuse ethnobotanists who are trying to follow species through the literature. Changes in botanical nomenclature, use of unfamiliar local and common names, and inadequate differentiation of varieties cause difficulties for researchers looking for references to particular plants. Problems encountered in a search for Cordyline terminalis (L.) Kunth, the "Hawaiian ti plant," illustrate these difficulties and point to some ways of resolving them. RESUMEN.-La diversidad de las alusiones a plantas que emplean los botanicos, los etn6grafos y los linguistas tiende a confundir a los etnobotanicos que procuren rastrear ciertas especies en las publicaciones cientificas. Los cambios de nomenclatura botanica, el uso de terminos locales y raros y nombres propios y la distinci6n insufiente entre las subdiviones dificultan la busca de referencias a plantas determinadas de parte de los investigadores. Los problemas encarados en la exploraci6n de Cordyline terminalis (L.) Kunth, "Hawaiian ti plant," demuestran esos obstaculos a la vez que indican ciertos metodos para superados. RESUME.-Les differentes sortes de references aux plantes dont les botanistes, les ethnographes et les linguistes se servent peuvent rendre perplexe l'ethnobotaniste occupe a suivre des especes a travers la litterature. Les changements de nomenclature botanique, I'emploi de noms locaux ou populaires peu familiers, et la differentiation insuffisante entre varietes posent des problemes a ceux qui sont en train de chercher des references aune plante determinee.
    [Show full text]
  • Lepidoptera: Gracillariidae): an Adventive Herbivore of Chinese Tallowtree (Malpighiales: Euphorbiaceae) J
    Host range of Caloptilia triadicae (Lepidoptera: Gracillariidae): an adventive herbivore of Chinese tallowtree (Malpighiales: Euphorbiaceae) J. G. Duncan1, M. S. Steininger1, S. A. Wright1, G. S. Wheeler2,* Chinese tallowtree, Triadica sebifera (L.) Small (Malpighiales: Eu- and the defoliating mothGadirtha fusca Pogue (Lepidoptera: Nolidae), phorbiaceae), native to China, is one of the most aggressive and wide- both being tested in quarantine to determine suitability for biological spread invasive weeds in temperate forests and marshlands of the control (Huang et al. 2011; Wang et al. 2012b; Pogue 2014). The com- southeastern USA (Bruce et al. 1997). Chinese tallowtree (hereafter patibility of these potential agents with one another and other herbi- “tallow”) was estimated to cover nearly 185,000 ha of southern for- vores like C. triadicae is being examined. The goal of this study was to ests (Invasive.org 2015). Since its introduction, the weed has been re- determine if C. triadicae posed a threat to other native or ornamental ported primarily in 10 states including North Carolina, South Carolina, plants of the southeastern USA. Georgia, Florida, Alabama, Mississippi, Louisiana, Arkansas, Texas, and Plants. Tallow plant material was field collected as seeds, seed- California (EddMapS 2015). Tallow is now a prohibited noxious weed lings, or small plants in Alachua County, Florida, and cultured as pot- in Florida, Louisiana, Mississippi, and Texas (USDA/NRCS 2015). As the ted plants and maintained in a secure area at the Florida Department existing range of tallow is expected to increase, the projected timber of Agriculture and Consumer Services, Division of Plant Industry. Ad- loss, survey, and control costs will also increase.
    [Show full text]
  • Comparative Study of Leaf Morphology, Phytochemical, Mineral and Proximate Analysis of Codiaeum Variegatum (L.) A
    Brazilian Journal of Biological Sciences, 2017, v. 4, No. 7, p. 25-34. ISSN 2358-2731 https://dx.doi.org/10.21472/bjbs.040704 Comparative study of leaf morphology, phytochemical, mineral and proximate analysis of Codiaeum variegatum (L.) A. Juss. (Malpighiales: Euphorbiaceae) and its stable mutant Esan Edward Babatunde¹, Adaramola Feyisara Banji¹,*, Odutayo Foluke¹, Aina David Ayandiran² and Kotun Fatima¹ ¹Department of Basic Sciences, Babcock University, Ilishan- Remo Ogun State, Nigeria. Email: *Email: [email protected]. ²Department of Microbiology, Babcock University, Ilishan-Remo Ogun State, Nigeria. Abstract. Differences in terms of morphology, phytochemical, mineral and proximate compositions created as a result of a natural Received spontaneous mutation that produced a stable bud-sport on the January 25, 2017 vegetative parent body of a member of the Euphorbiacea Family Codiaeum variegatum cv. ovalifolium was compared. Morphological Accepted characterization of the leaves was done by leaf skeletonization, June 10, 2017 proximate and mineral analyzes were carried out by method of Association of Official Analytical Chemists while the phytochemical Released screening was carried out on 80% methanol extracts of the leaves June 30, 2017 using standard methods. From the results of the morphological characteristics, the mutant showed more vegetative vigor than the Open Acess Full Text Article parent plant. Results of phytochemical screening showed that; while flavonoid was absent in both, cardiac glycosides and tannins were highly present in the parent but slightly present in the mutant. For both mutant and the parent, calcium had the highest concentration. Copper was absent in the parent while it occurred at the lowest concentration in the mutant.
    [Show full text]
  • CHEMICAL COMPOSITION and ANTIBACTERIAL ACTIVITY of Codiaeum Variegatum LEAVES
    Zagazig J. Agric. Res., Vol. 46 No. (4) 2019 1133-11401133 Biotechnology Research http:/www.journals.zu.edu.eg/journalDisplay.aspx?Journalld=1&queryType=Master CHEMICAL COMPOSITION AND ANTIBACTERIAL ACTIVITY OF Codiaeum variegatum LEAVES Noha E.S. Mohamed*, R.A. El-Masry, A.E. Awad and H.A. Badr Agric. Biochem. Dept., Fac. Agric., Zagazig Univ., Egypt Received: 12/05/2019 ; Accepted: 12/06/2019 ABSTRACT: Natural substances of botanical origin have been important in African traditional medical practice. They have been used for various illnesses such as infections. Infectious diseases caused by pathogenic bacteria affect many communities and the treatment was made difficult partly because of antibiotic resistant strains. Phytochemicals isolated from medicinal plants are known to be effective in treating bacterial infections. The antibacterial activities of the ethanol and water leaf extracts of Codiaeum variegatum were tested. Antibacterial effects of crude extracts were performed using modified Kirby-Bauer disc diffusion technique to determine the zone of inhibition. The extracts were tested for the antibacterial activities against Gram-positive bacteria (Bacillus subtilis) and Gram- negative bacteria (Serratia marcescens). The results demonstrated that both of ethanol and water leaf crude extracts of Codiaeum variegatum have shown strong zone of inhibition against Serratia marcescens (20 mm) and Bacillus subtilis (12 mm) compared to control. This medicinal plant could be developed into affordable and safe standardized herbal products
    [Show full text]
  • EFFECTS of DIFFERENT CROTON (Codiaeum Variegatum L
    Zagazig J. Agric. Res., Vol. 45 No. (1) 2018 331-347331 Biotechnology Research http:/www.journals.zu.edu.eg/journalDisplay.aspx?Journalld=1&queryType=Master EFFECTS OF DIFFERENT CROTON ( Codiaeum variegatum L.) GENOTYPES AND GROWTH REGULATORS ON CALLUS INDUCTION, MICRO PROPAGATION AND ANTIBACTERIAL ACTIVITIES Gehad I.A. Bakheet 1*, S.S. Soliman 1, M.A.I. Abdelkader 2and M.M.A. Elashtokhy 1 1. Genet. Dept., Fac. Agric., Zagazig Univ., Egypt 2. Hort. Dept., Fac. Agric., Zagazig Univ., Egypt Received: 14/11/2017; Accepted: 03/12/2017 ABSTRACT: The Main aim of this study was determine the effect of different croton (Codiaeum variegatum ) genotypes (Gold Dust and Petra) and growth hormones on callus induction, micro propagation and antibacterial activities. Murashige and skoog (MS) medium with four compositions of growth hormones for callus induction, mursh M1 (2 mg/l 2, 4 Dichlorophenoxy acetic acid (2, 4-D), M2 (3 mg/l 2, 4-D), M3 (2mg/l 1-Naphthalen acetic acid (NAA), M4 (1mg/l 2, 4-D + 1 mg/l NAA) were used. For micro propagation, four different hormone balance were used, i.e., M1 (1 mg/l Benzyl adenine (BA) + 25 mg/l peptone), M2 (1mg/l BA + 50mg/l peptone), M3 (3mg/l BA + 25mg/l peptone), M4 (3mg/l BA + 50mg/l peptone).For rooting induction the combinations of growth regulators were used as follows, Mr1 (1mg/lIndolbuteric acid(IBA), Mr2 (2mg/l IBA), and Mr3 (1mg/l IBA+ 1mg/l NAA). Results showed that the highest genetic response for callus induction frequencies were seen for Petra genotype (91.25%) followed by Gold Dust.
    [Show full text]
  • Plant Identification and Classification Summer 2015 - Notes
    BIOL 317: Plant Identification and Classification Summer 2015 - Notes Week 5 – Tuesday Malpighiales morphologically heterogeneous clade other important families include Hypericaceae (Saint-John's-wort), Passifloraceae (passionflower), Violaceae (violet), and Linaceae (flax) Euphorbiaceae (spurge family) 218 genera, 6745 spp. distributed widely, but especially diverse in tropics herbaceous or woody leaves - simple or compound; alternate or opposite; stipulate flowers • unisexual, plants monoecious or dioecious • usually actinomorphic • sepals none or 2-6 • petals none or 1-6 • stamens 1-many • pistil compound (3 carpels); ovary superior . 1 ovule/carpel . 3 styles, each usually divided • fruit: schizocarp (dry fruit that splits into usually one-seeded sections called mericarps) genus Euphorbia - largest genus in family and among largest genera of angiosperms, ~1800 spp. • milky latex, often poisonous and caustic - defense against herbivores • inflorescence: cyathium . example of pseudanthium - inflorescence that as a unit resembles a typical single flower . whorl of 4-5 bracts forming cup-like involucre with usually 5 nectar glands . reduced staminate flowers consist only of single stamen . reduced pistillate flower consist only of single pistil . cyathium sometimes subtended by additional showy bracts that attract animal pollinators • many succulents, including cactus-like forms, especially in arid habitats of Africa includes PNW weeds (Euphorbia maculata – milk spurge, etc.), food crop (Manihot esculenta – cassava), material
    [Show full text]
  • Reproduction and Identification of Root-Knot Nematodes on Perennial Ornamental Plants in Florida
    REPRODUCTION AND IDENTIFICATION OF ROOT-KNOT NEMATODES ON PERENNIAL ORNAMENTAL PLANTS IN FLORIDA By ROI LEVIN A THESIS PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE UNIVERSITY OF FLORIDA 2005 Copyright 2005 by Roi Levin ACKNOWLEDGMENTS I would like to thank my chair, Dr. W. T. Crow, and my committee members, Dr. J. A. Brito, Dr. R. K. Schoellhorn, and Dr. A. F. Wysocki, for their guidance and support of this work. I am honored to have worked under their supervision and commend them for their efforts and contributions to their respective fields. I would also like to thank my parents. Through my childhood and adult years, they have continuously encouraged me to pursue my interests and dreams, and, under their guidance, gave me the freedom to steer opportunities, curiosities, and decisions as I saw fit. Most of all, I would like to thank my fiancée, Melissa A. Weichert. Over the past few years, she has supported, encouraged, and loved me, through good times and bad. I will always remember her dedication, patience, and sacrifice while I was working on this study. I would not be the person I am today without our relationship and love. iii TABLE OF CONTENTS page ACKNOWLEDGMENTS ................................................................................................. iii LIST OF TABLES............................................................................................................. vi LIST OF FIGURES ..........................................................................................................
    [Show full text]
  • Croton, Codiaeum Variegatum Croton, Codiaeum Variegatum, Is a Common Houseplant Grown for Its Striking Foliage
    A Horticulture Information article from the Wisconsin Master Gardener website, posted 15 March 2019 Croton, Codiaeum variegatum Croton, Codiaeum variegatum, is a common houseplant grown for its striking foliage. It is one of six species of broadleaf evergreen perennials, shrubs, and small trees in this genus in the euphorbia family (Euphorbiaceae) which are native to tropical Asia and the western Pacifi c region (not to be confused with Croton, another genus of more than 700 species in the same family, in which it was formerly incorrectly classifi ed as Croton variegatum). This evergreen shrub or small tree varies widely in leaf color and pattern, and numerous cultivars have been developed. It is a tender perennial, hardy only in zones 11-12. In subtropical and tropical climates they are frequently used as landscape shrubs for dramatic hedges, bold focal points in gardens, or potted specimens around buildings. In its native habitat croton is a branching, bushy shrub that grows up to 10 feet tall, but those off ered as houseplants are usually much smaller than the wild plant. The large, thick, leathery leaves are 2 to 12 inches long and quite variable. The shiny, alternate leaves may be linear to oval, have a smooth or lobed margin Croton, Codiaeum variegatum, is grown as an ornamental for its striking foliage. (sometimes deeply cut to the midrib), and some are wavy or twisted into a spiral. The foliage color ranges from green variegated with white, pink, orange, red, yellow, or purple in various combinations that may change as the leaves age. Markings may follow along the major veins or may be blotches on any part of the leaf blade in regular or random patterns.
    [Show full text]