| Variation of coleoptile length in winter wheat varieties under PEG simulated drought stress and its association with their drought tolerance |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2009.04.24 |
| Key Words: wheat drought stress coleoptile length drought index drought resistance capacity |
|
| Hits: 156 |
| Download times: 133 |
| Abstract: |
| 6 winter wheat varieties (or lines) were used as materials， their coleoptile length， seedling length and main radicle length of wheat seedlings were investigated under different concentrations of PEG-6000 osmotic solution simulated drought stress， and their relations with the yield components and drought tolerance under rainfed and rainout shelters were further analyzed. Under different concentrations PEG-6000 osmotic solution simulated drought stress， significant differences were observed among different wheat varieties. The correlation analysis on their coleoptile length in seedlings under different treatments with their yield drought tolerance index revealed significant and positive association with cor
relation coefficient of 0.9600. The longer the coleoptile length of the variety is， the higher the drought tolerance index is. Coleoptile length were observed in different varieties，and the differences among varieties were consistent under different simulated drought stresses， therefore， coleoptile length could be used in the evaluation of drought in wheat at the early stage. |