Effect of Seed Vigour and Pretreatment on Germinability and Seedling Growth of Safflower under Drought and Salinity Conditions
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 12
Abstract
The present research was carried out to investigate the effects of the seed vigour and pretreatment and osmotic and salt stresses on safflower seed germination and seedling development. For this purpose, a factorial experiment was conducted based on randomized complete block (RCB) design with three replications. The experimental treatments was also included in two levels of seed vigour, five levels of salinity and osmotic stresses and three levels of seed pretreatment. Our results showed that increasing seed deterioration level, salinity and osmotic strengths, had inhibitory effects on seed viability and germinability, germination speed, vigor index and seedling dry weight and length. Pretreatments increased percentage and speed of germination, vigour index and seedling length. Increasing the deterioration of seeds, and also the strengths of salt and osmotic stresses, were led to decrease of chlorophylls a and b content in safflower seedlings, while pretreatment improved chlorophylls a and b content of seedlings.
Authors and Affiliations
Saeid Khomari, Mohammad Soltani-nezhad and Mohammad Sedghi
Keywords
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