Investigating the effect of drought stress induced by mannitol on germination and morphological properties of wheat inbred lines
Paper Details
Investigating the effect of drought stress induced by mannitol on germination and morphological properties of wheat inbred lines
Abstract
To investigate the response of inbred lines of M82 and Babax wheat series to drought stress, which induced by mannitol, on growth stage of plant, a factorial experiment with a completely randomized design with 2 replicates in normal and drought stress condition on 169 in board lines, was performed. Ln this research the mannitol with -8 Mpa osmotic pressure was used and the morphological properties such as stem and root length,wet weight of stem and root,dried weight of stem and root, proportion of stem length to root length, wet weight of stem to root, seedling length, proportion of dried weight of root to stem, sum of root and stem wet weigh and sum of dried weight of stem and root were studied and statically analyzed. The results indicated that drought stress had significant effect on investigated properties. Results of cluster analysis showed that in drought condition,lines with numbers 11,9,8,1 and 19 in comparison to others were greater in stem length, dried weight of stem, length of seedling and sum of dried weight of root and stem. In drought condition, some of lines individually were great in some studied parameters, such as lines with number 113 and 109 in root length, 8th line in stem and seedling length, number 9 in stem wet weight. The stem parameter can be used as the best property to select the drought tolerance lines.
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