| 水分胁迫下高梁叶片的渗透调节 |
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| 引用本文： | 王玉国,荆家海,王韶唐.水分胁迫下高梁叶片的渗透调节[J].山西农业大学学报(自然科学版),1991(2). |
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| 作者姓名： | 王玉国 荆家海 王韶唐 |
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| 作者单位： | 山西农业大学，西北农业大学，西北农业大学 太谷 |
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| 基金项目： | 国家自然科学基金资助项目一部分 |
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| 摘 要： | 实验结果表明,高粱抗旱品种“3197B”比不抗旱品种“三尺三”在水分胁迫条件下相对含水量随水势下降缓慢,渗透势下降低。在相对含水量为1.0时,3197B渗透势比三尺三低0.3MPa,即3197B渗透调节能力强,水分胁迫期间,3197B膨压变化比三尺三大,表明3197B的细胞壁弹性低于三尺三。
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| 关 键 词： | 水分胁迫 水势 渗透势 膨压 渗透调节 |
OSMOTIC ADJUSTMENT IN SORGHUM LEAVES UNDER WATER STRESS |
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| Wang Yuguo et al..OSMOTIC ADJUSTMENT IN SORGHUM LEAVES UNDER WATER STRESS[J].Journal of Shanxi Agricultural University,1991(2). |
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| Authors: | Wang Yuguo |
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| Abstract: | Osmotic adjustment capacity was studied with two sorghum cultivars that were different in drought resistance (CV. 3197B, drought resistant, and San Shi San, drought susceptible) under water stress condition. The results showed that 3197B had a slower decline rate in water potential, relative water content and higher negative osmotic potential. When the relative water content was 1. 0, osmotic potential of 3197B was 0. 3 MPa lower than San Chi San. Under water stress, changes in turgor pressure were greater with 3197B than San Chi San, indicating that cell wall elasticity of 3197B was lower than San Chi San. |
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| Keywords: | Water stress water potential osmotic potential turgor pressure osmotic adjustment sorghum |
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