EFFECTS OF DROUGHT STRESS ON ENDOGENOUS HORMONES AND OSMOTIC REGULATORY SUBSTANCES OF COMMON BEAN (PHASEOLUS VULGARIS L.) AT SEEDLING STAGE
文献类型： 外文期刊
作者： Wang, Q. 1 ; Lin, F. 1 ; Wei, S. H. 2 ; Meng, X. X. 2 ; Yin, Z. G. 2 ; Guo, Y. F. 2 ; Yang, G. D. 3 ;
作者机构： 1.Shenyang Agr Univ, Coll Biosci & Biotechnol, 120 Dongling Rd, Shenyang 110866, Liaoning, Peoples R China
2.Heilongjiang Acad Agr Sci, Crop Resources Inst, Harbin 150086, Heilongjiang, Peoples R China
3.Heilongjiang Acad Agr Sci, Keshan Branch, Harbin 161600, Heilongjiang, Peoples R China
关键词： common bean; drought stress; ABA; proline; soluble sugar
期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.711； 五年影响因子：0.796 ）
ISSN： 1589-1623
年卷期： 2019 年 17 卷 2 期
页码：
收录情况： SCI
摘要： Drought is an important factor that restricts the growth of common bean. In the present study, Longyundou 10 (non-drought-resistant variety) and Longyundou 17 (drought-resistant variety) were selected to analyze the effects of drought stress on endogenous hormones and osmotic regulatory substances of common bean at seedling stage. Under mild drought stress, the ABA accumulation and response of drought-resistant Longyundou 17 were stronger than that of no drought-resistant Longyundou 10. The effects of CTK and IAA on drought resistance of common bean at seedling stage are complicated. Under normal water condition, the soluble protein content of Longyundou 10 was slightly higher than that of Longyundou 17. However, there was no significant difference in the degree of inhibition between Longyundou 10 and 17. Therefore, we believe that the soluble protein of common bean has little effect on resisting the threat of drought stress. The content of proline and soluble sugar in common bean responded strongly to drought stress, these two osmotic regulatory substances in drought-resistant varieties were higher than those in drought-resistant varieties. Therefore, ABA, proline and soluble sugar content can be used as important indicators for breeding of drought-resistant Varieties of common bean at seedling stage.
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