sepideh nikoumaram; Reza Tavakkol Afshari
Abstract
An experiment was done in the research laboratory of Tehran university in order to evaluate the effect of various conditions of seed storage on storability of rapeseed primed seed. The experiment factors have included the seed priming using .05% lotion of KNO3 for 12 hours (primed and non primed with ...
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An experiment was done in the research laboratory of Tehran university in order to evaluate the effect of various conditions of seed storage on storability of rapeseed primed seed. The experiment factors have included the seed priming using .05% lotion of KNO3 for 12 hours (primed and non primed with a this lotion)–package (vaccum packaging, nano and aluminium bags)–seed storage condition including: moisture content (5, 9, 13 and 17 %), temperatures(15 and 30) and storage periods(1,2,3,4,5 and 6 months). Analysis of variance demonstrated that with increasing the duration of storage and also with increasing seed content humidity amount and storage temperature, the seeds vigour would be decreased and in studing indexes, this decrease occurred in the first month of storage in 17% seed water content and 30 C temperature treatment and not in other onces, which shows that storage condition in more important in storage than other factors. For all indices, germination rate and percentage in rapeseed seed, there were significant differences in main, double and triple interaction effects at 1% probability level. the nano packagings is usually suggested as a suitable packaging to preserve the seeds in these condition.
H. Zamani; H.R. Mobasser; A. Hamidi; A.R. Daneshmand
Abstract
In order to Study on effect of pelleting on flue-cured tobacco (Nicotiana tobacco L.)K326 cultivar various seed size germination and seedling emergence, this research conducted at Tirtash Tobacco Research and Education Center (in Behshahr) in 2014 by employing pan coater pelleting machine based ...
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In order to Study on effect of pelleting on flue-cured tobacco (Nicotiana tobacco L.)K326 cultivar various seed size germination and seedling emergence, this research conducted at Tirtash Tobacco Research and Education Center (in Behshahr) in 2014 by employing pan coater pelleting machine based on completely randomized design by four replication. First, seeds were cleaned and then primed by KNO3three percent concentration solution. Consequently, seeds pelletedby a composition of insecticide and fungicidesand a powder containing various materials. Pelleted seeds after drying, by 1, 1.5 and 2 mm round holesieves separated to three seed diameter size and in companion with crud (naked) and pelleted in other country seeds were experiment treatments. Also for evaluating effect of storage duration effect on studied traits, seeds stored for one year in 10centigrade degree. Normal seedlings percent immediately and one year after pelleting andcoefficient of velocity of germination immediately after seeds pelletingby standard germination test and seedling emergence percent in nursery immediately and one year after seeds pelleting were determined.Results showed, two mm diameter pelleted seeds had the lowest normal seedlings percent and seedling emergencepercent in nursery immediately and one year after seeds pelleting and coefficient of velocity of germination immediately after seeds pelleting. Also, the most amounts of this traits belonged to not pelleted seeds and pelleted seeds germination ability and seedling emergence did not significantly decreased after one year after pelleting. Based on this research results pelletted seed with 1.5mm diameter had better germination ability and seedling emergence
