Influence of Seed Invigoration on Seed Quality in Upland Rice Genotypes
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Authors
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VIDYA CJ
University of Agricultural Sciences, Dharwad, Karnataka–580005, India
Author
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GURUMURTHY R
University of Agricultural Sciences, Dharwad, Karnataka–580005, India
Author
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NK BIRADAR PATIL
University of Agricultural Sciences, Dharwad, Karnataka–580005, India
Author
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HANAMARATTI NG
University of Agricultural Sciences, Dharwad, Karnataka–580005, India
Author
Keywords:
Rice, gibberllic acid, ascorbic acid, azospirullum, primingAbstract
A lab experiment was conducted to study the Influence of seed invigoration technique on seed quality in rice genotypes in the department of seed science and technology during 2020-21. Results revealed that among elite genotypes ‘BD 1’ and ‘BA 4’ found significantly superior in enzymatic activity and seed quality parameters. Among different treatments, the seed priming treatment with gibberllic acid @ 60 ppm for 12 hours recorded significantly higher values for enzymatic activity and seed quality parameters. Followed by seed treatment with ascorbic acid 10 ppm for 48 hours followed by seed treatment with azospirillum @ 1:50 dilution for 18 hours followed by seed treatment with distilled water for 48 hours and control. Among different treatments and genotypes combinations, seed priming treatment with gibberllic acid @ 60 ppm for 12 hours in genotype BD1 and BA4 registered significantly superior seed quality parameters. Decreased enzymatic activity viz., alpha amylase (1.98 cm to 0.38 cm), dehydrogenase (1.054 to 0.724 OD @ A480 nm), catalase (94.05 to 45.15 µmoles H2O2 decomposed/ min/g of seed fresh weight), peroxidase (5.91 to 2.78 µmoles/min/g of seed fresh weight) and SOD activity (22.27 to 12.59 Units/min/g seed fresh weight respectively) it is associated with decline in seed quality parameters viz., germination (88.50% to 77.5%), seedling shoot length (25.42cm to 13.3 cm), seedling root length (28.54 cm to 16.07 cm) and seedling dry weight (161.75 mg to 144.9 mg), field emergence (83.5% to 72.5%), seedling vigour
index I (2374 to 1138), seedling vigour index II (4332 to 2371).
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