STUDIES ON SEED TESTING PROTOCOL AND SEED LONGEVITY IN CHIA (Salvia hispanica L.)
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Date
2023-01-12
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Abstract
A laboratory experiment was conducted at AICRP on Seed (Crops), UAS, GKVK, Bengaluru during 2021-22. Chia seeds were subjected to germination at different temperatures (20, 25 and 30 ℃) and substrates (sand, between paper and top of paper). Among the temperatures, higher germination (75.58 %), mean seedling length (14.23 cm) and seedling vigour index-I (1076) were recorded at 25 ℃. Among the substrates, higher germination (70.51%), mean seedling length (12.47cm) and seedling vigour index-I (891) were recorded in top of paper method. To study the seed storability, chia seeds were treated with four different chemicals (untreated, sweet flag @ 2g/kg, carbendazim @ 1g/kg and captan @ 2g/kg) and packed in three different packaging materials [cloth bag, super grain bag and polythene bag (700-gauge)]. Among the packaging materials, seeds stored in polythene bag (700-gauge) recorded better seed quality attributes viz., germination (66.34 %), mean seedling length (9.51 cm), seedling vigour index-I (635) and total dehydrogenase activity (1.089 A480 nm) up to ten months of storge. Among the chemicals, seeds treated with carbendazim @ 1g/kg resulted in higher seed quality parameters viz., germination (65.50 %), mean seedling length (9.66 cm), seedling vigour index-I (640) and total dehydrogenase activity (1.030 A480 nm). It is concluded that, temperature of 25 ℃ and top of paper method seems to be ideal for testing seed germination of chia and seeds could be stored up to ten months under ambient condition by treating with carbendazim and packed in polythene bag (700-gauge).
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