On the origin of oil droplets in maturing castor bean seeds,Ricinus communis

Lipids ◽  
1971 ◽  
Vol 6 (11) ◽  
pp. 851-854 ◽  
Author(s):  
J. L. Harwood ◽  
Ann Sodja ◽  
P. K. Stumpf ◽  
A. R. Spurr
Keyword(s):  
Castor Bean ◽  
Ricinus Communis ◽  
Oil Droplets ◽  
Origin Of Oil

First report of association of Cucumber mosaic virus with blister and leaf distortion of castor bean (Ricinus communis) in India

2010 ◽  
Vol 38 (3) ◽  
pp. 283-289 ◽  
Author(s):  
Shri Krishna Raj ◽  
Sunil Kumar Snehi ◽  
Karmveer Kumar Gautam ◽  
Mohammad Sajid Khan
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Castor Bean ◽  
Ricinus Communis ◽  
First Report ◽  
Leaf Distortion

scholarly journals Bulked segregant analysis reveals candidate genes responsible for dwarf formation in woody oilseed crop castor bean

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zaiqing Wang ◽  
Anmin Yu ◽  
Fei Li ◽  
Wei Xu ◽  
Bing Han ◽  
...  
Keyword(s):  
Candidate Genes ◽  
Castor Bean ◽  
Woody Plants ◽  
Molecular Mechanisms ◽  
Ricinus Communis ◽  
Bulked Segregant Analysis ◽  
Oilseed Crop ◽  
Yeast Transformation ◽  
Dwarf Phenotype ◽  
Genetic Breeding

AbstractPlant dwarfism is a desirable agronomic trait in non-timber trees, but little is known about the physiological and molecular mechanism underlying dwarfism in woody plants. Castor bean (Ricinus communis) is a typical woody oilseed crop. We performed cytological observations within xylem, phloem and cambia tissues, revealing that divergent cell growth in all tissues might play a role in the dwarf phenotype in cultivated castor bean. Based on bulked segregant analyses for a F2 population generated from the crossing of a tall and a dwarf accession, we identified two QTLs associated with plant height, covering 325 candidate genes. One of these, Rc5NG4-1 encoding a putative IAA transport protein localized in the tonoplast was functionally characterized. A non-synonymous SNP (altering the amino acid sequence from Y to C at position 218) differentiated the tall and dwarf plants and we confirmed, through heterologous yeast transformation, that the IAA uptake capacities of Rc5NG4-1Y and Rc5NG4-1C were significantly different. This study provides insights into the physiological and molecular mechanisms of dwarfing in woody non-timber economically important plants, with potential to aid in the genetic breeding of castor bean and other related crops.

scholarly journals Life history of Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae) fed with castor bean (Ricinus communisL.) pollen in laboratory conditions

2014 ◽  
Vol 74 (3) ◽  
pp. 691-697 ◽  
Author(s):  
PP Marafeli ◽  
PR Reis ◽  
EC. da Silveira ◽  
GC Souza-Pimentel ◽  
MA. de Toledo
Keyword(s):  
Life History ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Intrinsic Rate ◽  
Predatory Mite ◽  
Neoseiulus Californicus ◽  
Intrinsic Rate Of Increase ◽  
Ricinus Communis L ◽  
Rate Of Increase ◽  
History Of

The predatory mite, Neoseiulus californicus(McGregor, 1954) (Acari: Phytoseiidae) is one of the principal natural enemies of tetranychid mites in several countries, promoting efficient control of those mites in several food and ornamental crops. Pest attacks such as that of the spider mite, Tetranychus urticaeKoch, 1836 (Acari: Tetranychidae), is one of the problems faced by farmers, especially in the greenhouse, due to the difficulty of its control with the use of chemicals because of the development of fast resistance making it hard to control it. The objective of this work was to study the life history of the predatory mite N. californicus as a contribution to its mass laboratory rearing, having castor bean plant [Ricinus communis L. (Euphorbiaceae)] pollen as food, for its subsequent use as a natural enemy of T. urticae on a cultivation of greenhouse rosebushes. The studies were carried out in the laboratory, at 25 ± 2°C of temperature, 70 ± 10% RH and a 14 hour photophase. The biological aspects and the fertility life table were appraised. Longevity of 32.9 days was verified for adult females and 40.4 days for males. The intrinsic rate of increase (rm) was 0.2 and the mean generation time (T) was 17.2 days. The population doubled every 4.1 days. The results obtained were similar to those in which the predatory mite N. californicus fed on T. urticae.

scholarly journals A Differentially Expressed Gene from a High Oil Producer Cultivar of Castor Bean (<i>Ricinus communis</i>) Is Involved in the Biosynthesis of Ricinoleic Acid

2020 ◽  
Vol 11 (03) ◽  
pp. 393-412
Author(s):  
Héctor A. Rodríguez-Cabal ◽  
Claudia Y. Jaramillo-Mazo ◽  
Nicolás D. Franco-Sierra ◽  
Diego F. Villanueva-Mejía ◽  
Javier C. Alvarez
Keyword(s):  
Ricinoleic Acid ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Differentially Expressed Gene ◽  
Differentially Expressed

scholarly journals Efecto de Corythucha gossypii sobre las hojas de higuerilla: criterios para su muestreo y control con insecticidas

2010 ◽  
Vol 11 (1) ◽  
pp. 41 ◽  
Author(s):  
Edgar Herney Varón ◽  
Márcio Dionizio Moreira ◽  
Jenny Paola Corredor
Keyword(s):  
Castor Bean ◽  
Ricinus Communis ◽  
Insect Pest ◽  
Lower Surface ◽  
Insecticide Application ◽  
Lace Bug ◽  
Life Period ◽  
Ricinus Communis L ◽  
Oil Plant ◽  
And Control

<p>El chinche de encaje, Corythucha gossypii (Fabricius) (Hemiptera: Tingidae), es un insecto plaga del algodón, pero ha sido reportado en más de veinticuatro hospederos, incluyendo higuerilla (Ricinus communis L). El objetivo de este trabajo fue evaluar si esta plaga disminuye el periodo de vida útil de las hojas, establecer la superficie de muestreo de la hoja que mejor representa las poblaciones de esta plaga y la eficacia de seis insecticidas para su control en higuerilla. La vida útil de las hojas fue negativamente influenciada por la presencia del insecto plaga; a mayor número inicial de insectos, menor fue el tiempo para la pérdida de hojas. La superficie del envés fue la que mejor representó la población de C. gossypii con un promedio ± Error Standard (ES) de 55,10 ± 4,76 de individuos y una correlación con la población total de 99,60%, R2 =0,99 y p &lt; 0,0001; comparado con 3,44 ± 0,57 individuos y una correlación de 66,32%; R2=0,44 y p &lt; 0,0001 para la superficie del haz. El orden de eficacia de control para 3 días después de la aplicación de los tratamientos fue tiametoxam + lambdacihalotrina (0,00%), spinetoram, (0,00%), malation (20,35%), tiametoxam (38,62%), dimetoato (86,94%) e imidacloprid (87,33%); para 7 días fue tiametoxam + lambdacihalotrina (0,00%), spinetoram (21,46%), malation (38,77), tiametoxam (50,84%), dimetoato (86,14%) e imidacloprid (90,37%). Los datos de muestreo, a partir de 16 días, presentaron una gran pérdida de unidades experimentales, lo que imposibilitó el análisis de los resultados, después de ese tiempo.</p><p> </p><p><strong>Effect of Corythucha gossypii on Castor Oil Plant Leaves: Sampling Criteria and Control by Insecticides</strong></p><p>The lace bug, also called the “cotton or bean lace bug”, Corythucha gossypii (Fabricius) (Hemiptera: Tingidae) is a common pest from cotton. However it has been reported in another twenty four plant hosts including castor bean (Ricinus communis L.). This work aimed to establish if this insect pest can reduce the life-period of leaves, to assess which is the leaf surface that best represents the total pest population for sampling and to test the efficacy of six insecticides for C. gossypii control in a castor bean crop. The life-period of leaves was negatively affected by the presence of the insect, the larger the number of C. gossypii, the shorter their leaf life. The lower surface best represented the entire population of lace bug with a mean ± standard error of 55.10 ± 4.76, with a 99.60% of correlation, a R2=0.99 and a p &lt; 0.0001; compared to 3.44 ± 0.57, with a 66.32% of correlation, a R2=0.44 and a p &lt; 0.0001 for the upper surface. Efficacy of control after three days of insecticide application was: thiamethoxam + lambdacyhalothrin (0.00%), spinetoram, (0.00%), malathion (20.35%), thiamethoxam (38.62%), dimethoate (86.94%) and imidacloprid (87.33%). After seven days of insecticide application the efficacy was thiamethoxam + lambdacyhalothrin (0.00%), spinetoram (21.46%), malathion (38.77), thiamethoxam (50.84%), dimethoate (86.14%) and imidacloprid (90.37%). Results obtained after 16 days lacked many sampling unit leaves, which made their analysis meaningless, after that period of time. </p>

scholarly journals Germination and initial development of canola and radish submitted to castor leaves aqueous extracts

2016 ◽  
Vol 7 (1) ◽  
pp. 104
Author(s):  
Carlos Alberto Gonsiorkiewicz Rigon ◽  
Adriana Tourinho Salamoni ◽  
Luan Cutti ◽  
Adalin Cezar Morais de Aguiar
Keyword(s):  
Seed Germination ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Initial Growth ◽  
Aqueous Extracts ◽  
Brassica Napus L ◽  
Initial Development ◽  
Allelopathic Potential ◽  
Ricinus Communis L ◽  
Radish Seed

This study aimed to evaluate the allelopathic activity of aqueous extracts of castor bean (Ricinus communis L.) leaves on germination and initial growth of canola (Brassica napus L.) and radish (Raphanus sativus L.) seedlings. Two experiments were conducted, usingcanola seeds for the first, which was installed in a 2x7 factorial scheme (with two photoperiods – dark and light and seven extracts concentrations - 0, 1, 2, 4, 8, 16 and 32%). The second experiment consisted of an evaluation of radish seed germination submitted to seven concentrations of the extracts in the dark photoperiod. The germination of the canola seeds was reduced in the dark, and the use of extracts at concentrations of 16% and 32%inhibited seeds germination for both studied photoperiods. The radish seed germination was completely inhibited when the concentration of 32% was used, however, at the concentrations of 4, 8 and 16% a reduction on rootand hypocoyl development of the seedlings were observed, affirming the high allelopathic potential of castor bean aqueous extracts on canola and radish.

scholarly journals Phytoremediation Potential of Castor Bean (Ricinus Communis L.)

2020 ◽  
Vol 4 (9) ◽  
pp. 63-72
Author(s):  
Violina Angelova ◽  
Mariana Perifanova Nemska
Keyword(s):  
Castor Bean ◽  
Ricinus Communis ◽  
Ricinus Communis L
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