The effect of Different levels of Salinity Stress on germination and seedling growth of Sufflower Cultivars in Greenhouse condition
Subject Areas : New Finding in AgricultureEsmaiel gholinezhad 1 , Asieh Majlesi 2 , seyed javad Talebzadeh 3 , vahid Salmanpour 4 , Nour ali Sajedi 5
1 - استادیار گروه علمی علوم کشاورزی- دانشگاه پیام نور، تهران، ایران
2 - کارشناسی ارشد زراعت
3 - مربی علمی، گروه علمی علوم کشاورزی، دانشگاه پیام نور، تهران، ایران
4 - مربی علمی، گروه علمی علوم کشاورزی، دانشگاه پیام نور، تهران ، ایران
5 - استادیار دانشگاه آزاد اسلامی اراک
Keywords: salinity stress, seedling growth, genotype, Safflower,
Abstract :
In order to investigation of salinity stress effects on vegetative, and plantlet growth an experiment conducted by factorial based on randomized completely block designs with 4 replications in 2011 in department of agriculture of Urmia Payame Noor. The factors were 4 genotypes (Zarghan 279, Gholdasht, Faraman and Padideh) and 5 level of salinity (0-4-8-12-16) ds/m from Nacl. In these research traits of root, leaf, stem dry weight, seedling dry weight, stem length, root length and stress tolerance index were meausured. The results showed that different levels of salinity had siugnificantly affect on root, leaf, stem dry weight, seedling dry weight, stem length, root length and stress tolerance index. Comparison of mean showed that salinity stress of 16 ds/m traits root, leaf, stem dry weight, seedling dry weight, stem length and root length decreased about 60, 44, 68, 55, 76 and 58%, respectively. So the highest obtained from control treatment and the lowest obtained from salinity level of 16 ds/m. The genotypes respond differently to salinity levels. It seems genotypes of Faraman have more tolerance to salinity conditions. Genotypes of Zarghan 279, Gholdasht and Padideh were sensitive to salinity stress.
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