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Subject: Seed Science and Technology × Author: ARUNAKUMAR × End date: 2017 × Start date: 2010 ×
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    ThesisItemOpen Access
    STANDARDIZATION OF SEED PRODUCTION TECHNOLOGIES IN LUCERNE (Medicago sativa L.)
    (University of Agricultural Sciences, Dharwad, 2014-05) ARUNAKUMAR; Dr. V. K. Deshpande
    An investigation entitled “Standardization of seed production technologies in lucerne (Medicago sativa L.) Cv. RL-88” was carried out during rabi-summer seasons of 2010-11 and 2011-12 at Indian Grassland and Fodder Research Institute, Southern Regional Research Station, Dharwad and Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad with four field and two laboratory experiments. The results on the cutting management practices revealed that two cut (T3) treatment recorded significantly the highest seed yield (228.93 kg/ha.), seed quality parameters like seed germination (87.50 %), seedling vigour index (1152). Among the different time of sowing treatments, sowing on December 14th registered significantly higher growth, seed yield (222.41 kg/ha.), seed quality like seed germination (87.13 %) and seedling vigour index (1137). Seeds harvested from two cut treatment and 14th December sown crop showed higher seed quality parameters during all the months of ambient storage over other cutting management and time of sowing treatments. The seeds stored in polyethylene bag (700 gauge) were superior over cloth bag throughout the storage period. Among the supplementary pollination techniques, spraying of Jaggery solution (10 %) recorded highest seed setting (61.73 %), seed yield (297.90 kg/ha) and seed quality traits like seed germination (87.59 %), seedling length (12.89 cm) and seedling vigour index (1129) as compared to other techniques. The experiment on seed development and maturation studies revealed that harvesting of pods and seeds on 35 days after anthesis (DAA) produced higher seed quality attributes like seed germination (85.67 %), seedling length (13.86 cm), seedling vigour index (1187). It also indicated that harvesting pods on 35th DAA is the actual physiological maturity stage for obtaining better seed quality in lucerne.