Abstract: The main aim of the study is to document the seed development and maturation pattern to fix optimum stage for harvest. Fixation of optimum stage of physiological as well as harvestable maturity will ensure better quality seeds and reduces the shattering loss. Reliable information on optimum stage of harvest will enable the seed producer to harvest the seed crop in time. Hence, knowledge on the development of seed from fertilization to maturity will be highly valuable and useful. Studies on physiological maturity indicated that mustard seeds cv. GM-2 attained physiological maturity at 45 days after anthesis with maximum dry weight, germination and vigour. The seed development and maturation study indicated low fresh weight of developing seeds at initial stage with gradual increase during later stages of seed development and attained maximum of 0.94 g at 25 days after anthesis. The dry weight gradually increased with the stages of maturation and reached maximum of 0.562 at 45 days after anthesis and started decreasing after physiological maturity (0.557 g at 50 DAA). Maximum moisture content of 82.09 per cent at 15 days after anthesis gradually decreased to 14.33 per cent at 45 days after anthesis. The developing seeds started to germinate at 35 days after anthesis registering36 per cent and reached maximum of 43 per cent at 45 days after anthesis indicating the physiological maturity of seeds. The shoot and root length, vigour index and dry matter production increased gradually and reached maximum of 43 per cent, 9.9 cm, 16.1 cm, 1120 and 23.85 mg, respectively at 45 days after anthesis.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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