Study on Effect delayed Sowing of mother plants on seed vigor of some spring rapeseed (Brassica napus L.) cultivars by standard germination test

Document Type : Original Article

Abstract

To study the effects of mother plant delayed sowing date on seed germination and seed vigor of 10 spring rapeseed cultivars, an experiment was conducted in two years (2006-2007). In the first year, 10 cultivars of spring rapeseed were planted in research field of seed and Plant Improvement Institute, Karaj, Iran, in two dates: 7th October (on time sowing) and 6th November (delayed sowing date). In the second year, standard germination test and electrical conductivity test were conducted to study seed performance grown in first year experiment. A factorial experiment in randomized complete block design was used. According to the results, the seeds of two Sowing dates were significantly different on the point of 1000 seed weight, seed density, length and dry weight of seedling, radical and plumule, germination percentage, germination rate index, seedling vigor index and electrical conductivity. In addition, the effect of cultivar was significant on seed density, dry weight of plumule and seedling, seedling vigor index and electrical conductivity. The seeds of on time planting date had higher seed vigor than delayed sowing date. Elite cv had high seed weight than other cultivar. The seed weight could be used as a valuable index to determine seed vigor

Keywords

References

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Iranian Journal of Seed Science and Technology
Volume 1, Issue 2 - Serial Number 2
December 2012
Pages 147-160

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