Effect of daminozide (B9) on sex-expression and seed setting in castor bean, Ricinus communis L.

Chauhan, Seema; Saxena, Beenam; Kinoshita, Toshiro

doi:10.1270/jsbbs1951.37.262

Cited by 5 publications

(2 citation statements)

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“…And the results showed when treated with Alar, as the highest rates were recorded in the following characteristics (the length of the longest main branch of the plant and the length of the short branches) as in Tables (2 and 5), and this confirms what was indicated by [30] that most of the characteristics of Plant growth changed using growth inhibitors, and the highest rates mentioned were when the plant was treated with alar at a high concentration of 1500 mg.L -1 , and these results agree with what was reached by [31], and it is known that alar works to reduce plant height by Bio-inhibition of gibberellins in plants [32], but when using low concentrations of alar for plants, they act as growth stimulants [33] and thus increase plant height as well as the length of the longest main branch of the plant and the short branches [34].…”

Section: Length Of Short Branches At the End Of The Main Branches Of ...supporting

confidence: 85%

Effect of Alar and Light Intensity on some Vegetative Growth Characteristics of Juniper Plant (Juniperus Sabina L.)

Abbas,

Al-Bakkar

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The research carried out at the Department of Horticulture and Landscape Engineering in the Agricultural Research and Experiment Station of the College of Agriculture / University of Kirkuk in Al-Sayada, which is located at an altitude of 300 meters above sea level and at 35.23 North latitude and 44.20 East longitude. The aim of the study is to know the effect of foliar spraying with alar in three concentrations (0, 750 and 1500) mg.L−1, where the plants were sprayed after planting twice on (6/7/2021 and 6/22/2021) and two levels of light intensity. (50% of the light intensity inside the wooden canopy and 100% of the light intensity under direct sunlight) on the growth of juniper plants and to determine if juniper cultivation is successful in Kirkuk’s particular environmental and climatic circumstances, . A randomized complete block design (RCBD) was used to conduct the experiment. The treatments were distributed randomly to the experimental units, with three replications, three seedlings in one experimental unit. The plants were grown in each experimental unit, three plants, the distance between one plant and another was 40 cm, and the distance between one replication and another was 1 meter. The characteristic of the length of the long branches from the base of the main branch, and the characteristic of the length of the short branches at the end of the main branches, which amounted to (3,255 branches.plant−1, 28,460 cm, 12,533 cm) respectively, which did not differ significantly between them at the end of the experiment.

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Section: Length Of Short Branches At the End Of The Main Branches Of ...supporting

confidence: 85%

Effect of Alar and Light Intensity on some Vegetative Growth Characteristics of Juniper Plant (Juniperus Sabina L.)

Abbas,

Al-Bakkar

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…In addition, previous work showed that the activity of auxin-like substances causes feminization of castor bean, a process influenced by kinetin and morphactin (Kumar and Rao, 1981 ). Morphactin causes maleness in R. communis (Rkey, 1978 ; Varkey and Nigam, 1982 ), whereas daminozide promotes femaleness with reduction in the position of bearing the first female flower and the ratio of male and female flowers (Chauhan et al, 1987 ). To date, however, the key sex hormone in castor bean remains unknown.…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic Analysis for Different Sex Types of Ricinus communis L. during Development from Apical Buds to Inflorescences by Digital Gene Expression Profiling

et al. 2016

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The castor plant (Ricinus communis L.) is a versatile industrial oilseed crop with a diversity of sex patterns, its hybrid breeding for improving yield and high purity is still hampered by genetic instability of female and poor knowledge of sex expression mechanisms. To obtain some hints involved in sex expression and provide the basis for further insight into the molecular mechanisms of castor plant sex determination, we performed DGE analysis to investigate differences between the transcriptomes of apices and racemes derived from female (JXBM0705P) and monoecious (JXBM0705M) lines. A total of 18 DGE libraries were constructed from the apices and racemes of a wild monoecious line and its isogenic female derivative at three stages of apex development, in triplicate. Approximately 5.7 million clean tags per library were generated and mapped to the reference castor genome. Transcriptomic analysis showed that identical dynamic changes of gene expression were indicated in monoecious and female apical bud during its development from vegetation to reproduction, with more genes expressed at the raceme formation and infant raceme stages compare to the early leaf bud stage. More than 3000 of differentially expressed genes (DEGs) were detected in Ricinus apices at three developmental stages between two different sex types. A number of DEGs involved in hormone response and biosynthesis, such as auxin response and transport, transcription factors, signal transduction, histone demethylation/methylation, programmed cell death, and pollination, putatively associated with sex expression and reproduction were discovered, and the selected DEGs showed consistent expression between qRT-PCR validation and the DGE patterns. Most of those DEGs were suppressed at the early leaf stage in buds of the mutant, but then activated at the following transition stage (5-7-leaf stage) of buds in the mutant, and ultimately, the number of up-regulated DEGs was equal to that of down-regulation in the small raceme of the mutant. In this study, a large number of DEGs and some suggestions involved in sex expression and reproduction were discovered using DGE analysis, which provides large information and valuable hints for next insights into the molecular mechanism of sex determination. It is useful for other further studies in Ricinus.

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Classical Genetics, Cytogenetics, and Traditional Breeding in Castor Bean

Lavanya

Reddy

Dutta

et al. 2018

Compendium of Plant Genomes

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Effect of daminozide (B9) on sex-expression and seed setting in castor bean, Ricinus communis L.

Cited by 5 publications

References 2 publications

Effect of Alar and Light Intensity on some Vegetative Growth Characteristics of Juniper Plant (Juniperus Sabina L.)

Effect of Alar and Light Intensity on some Vegetative Growth Characteristics of Juniper Plant (Juniperus Sabina L.)

Transcriptomic Analysis for Different Sex Types of Ricinus communis L. during Development from Apical Buds to Inflorescences by Digital Gene Expression Profiling

Classical Genetics, Cytogenetics, and Traditional Breeding in Castor Bean

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