Abstract
Germplasm of three economically important nitrogen fixing tree species Acacia catechu, Alnus nitida and Dalbergia sissoo of Himalayas were procured from their classified seed zones. The seed stocks were tested to find out the effect of month of seed collection, storage, scarification treatment and incubation temperature on the germination behaviour of these species. In case of Alnus nitida, significantly higher germination was obtained in cold water treatment and no significant differences were noticed by incubating seeds at three different temperatures. Similarly Acacia catechu had significantly highest germination in seeds procured during February, treated with acid and kept at 25 or 30°C in 1-3 and 4-6 months of storage periods. Whereas, in Dalbergia sissoo, the seeds procured in January stored for three months, treated with cold water and subjected to 20°C showed significantly higher germination. But, with the increase in storage time and cold water treatment, maximum germination was obtained only when seeds were subjected to 30°C. Germination potential of seeds varied with the month of collection and storage period had a significant effect on it.
Published Version
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