التفاصيل البيبلوغرافية
| العنوان: |
Screening for Drought Tolerance: Evaluation of Seed Germination and Seedling Growth for Drought Resistance in Legume Plants. |
| المؤلفون: |
Grzesiak, S., Filek, W., Skrudlik, G., Niziol, B. |
| المصدر: |
Journal of Agronomy & Crop Science; Dec1996, Vol. 177 Issue 4, p245-252, 8p |
| مصطلحات موضوعية: |
DROUGHT tolerance, GERMINATION, CULTIVARS, LEGUMES, MANNITOL, SOIL solutions |
| مستخلص: |
Experiments were performed to evaluate seed germination and seedling growth in simulated drought as screening techniques for drought tolerance rating. Several laboratory screening tests were evaluated for ability to estimate drought resistance in 18 cultivars of legume plants (field bean, soybean, field pea, lupine). Drought was simulated by a water solution of mannitol of chemical water potential ψ = —0.3 and —0.6 MPa. Both solutions significantly affected seed germination (final germination and promptness index) and seedling growth parameters (seedling height, dry matter of shoot and root as well as leaf injury by drought and high temperature). The tested cultivars could be grouped as drought resistant and drought susceptible plants. Drought tolerance ratings of legume plants in the laboratory tests were, on the whole, consistent with the ratings based on estimation of direct effects of soil drought on seed yield in field experiments. Measurements of electroconductivity of leaf diffusate to evaluate invisible injury caused by drought or high temperature were found to be an adequate criterion for drought tolerance rating. It is concluded that tolerance to drought stress in growing seedlings can be screened for by using mannitol containing nutrient solution. According to the results collected in this research, varieties differences in seed germination, seedling growth and leaf injury affected by drought or heat temperature were evident, however, not all treatments appeared to be equally useful for screening of legume species cultivars. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Agronomy & Crop Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder