Selection of reproductive traits and oil content assessment for better parental combination in Jatropha curcas L. breeding program

ARUNA R PRAKASH, Ch. Ravi Prakash, Sarnam Singh, Arup Ghosh, Pradeep K Agarwal


A study was undertaken on various reproductive biology aspects of Jatropha curcas raised at an experimental site under semi-arid region of Gujarat state of India. An adequate knowledge of floral biology of a plant is a pre-requisite to select suitable genotypes from the existing populations based on their desirable reproductive traits contributing towards its productivity. The present investigation was carried out to observe the floral morphology, male to female flower ratio, pollen viability test, fruit and seed morphology and development of leaf, flower, fruit and seed in Jatropha curcas. Flowers and endosperm of Jatropha seeds were studies using Scanning Electron Microscope (SEM). The study was also determining the variation in seed morphology which influences the oil content. The significant differences were observed among the male to female flower and female flowers inflorescence-1. The plants exhibited range of pollen fertility from 80.8% to 89.1%. Shrunken (undeveloped) types of seeds were observed along with Bold (developed) in some fruits of selected plants. SEM of underdeveloped cotyledons (in Shrunken) showed desiccated or poorly developed cells whereas cells of well-developed cotyledons appeared to contain oil ducts or oil bodies indicating variation in the seed characteristics. Healthy seeds showed higher oil content (29.5 % to 36.8%) as compared to the Shrunken seeds (3.5% to 8.8%).

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MAYFEB Journal of Agricultural Science
Toronto, Ontario, Canada
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