Influence of Seed Size on Germination and Early Seedling Growth in Indian Mustard (Brassica juncea L.)
2012
Singh, Maharaj | Sharma, Archna | Chauhan, JS | Meena, RC | Meena, ML | Meena, SS | Mishra, AP
Indian mustard (Brassica juncea L.) accounts for about 66% of the total germplasm holdings of rapeseed mustard group of oilseed crops in the country. Conservation of good quality seeds of a germplasm accession is a prerequisite for its long-term viability and use in crop breeding programme. Seed size in Indian mustard influenced the loss of germination during storage. In the present investigation the effects of seed size on oil and protein content of seed, seed germination and seedling growth were studied during 2008–09 with 4 varieties and an advanced breeding line (Kranti, Pusabold, Pusa Jaikisan, Varuna, and BPR-549-9) of Indian mustard. Oil content varied from 36.4–38.9%, 39.0–42.6% and 39.0–43.8%, respectively, for small, medium and large group of seeds. Seed size had significant and positive correlation with root length (r= 0.655*), dry weight (r= 0.894**), root to shoot ratio (r=0.879**) and vigour index (r= 0.938**). Seedlings dry weight, vigour index, root length and root to shoot ratio increased with an increase in seed size thereby suggesting that the seeds after grading should be conserved in the gene bank.
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