| 盐胁迫下外源Ca~(2+)对红豆草幼苗抗性生理的影响 |
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| 引用本文： | 魏永鹏,陈天祥,南丽丽,于闯.盐胁迫下外源Ca~(2+)对红豆草幼苗抗性生理的影响[J].草原与草坪,2015(1):15-19. |
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| 作者姓名： | 魏永鹏 陈天祥 南丽丽 于闯 |
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| 作者单位： | 甘肃农业大学 草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃 兰州,730070 |
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| 基金项目： | 甘肃省高等学校科研专项资助 |
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| 摘 要： | 以蒙农红豆草为材料,研究了100mmol/L NaCl胁迫下不同浓度外源Ca2+对红豆草幼苗的生长、脯氨酸、可溶性糖和叶绿素含量及根系活力的影响;探讨了Ca2+对盐胁迫伤害的缓解作用。结果表明:随着Ca2+浓度的增加,与CK相比,红豆草脯氨酸、可溶性糖、叶绿素含量及根系活力呈先升高后降低的明显变化趋势,在T3(100mmol/L NaCl+30mmol/L CaCl2)处理下,红豆草脯氨酸、可溶性糖及叶绿素含量与对照相比提高了32.3%,60.0%和9.7%,差异显著(P0.05);T3、T4处理的根系活力显著高于CK(P0.05),其他处理与CK无明显差异;T3处理的株高显著高于对照CK(P0.05),其他处理与CK间无显著差异,达到最佳的效果。
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| 关 键 词： | 盐胁迫 红豆草 生理指标 外源Ca2%2B |
Effects of exogenous calcium on the seedling physiological traits of sainfoin under salt stress |
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| WEI Yong-peng,CHEN Tian-xiang,NAN Li-li,YU Chuang.Effects of exogenous calcium on the seedling physiological traits of sainfoin under salt stress[J].Grassland and Turf,2015(1):15-19. |
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| Authors: | WEI Yong-peng CHEN Tian-xiang NAN Li-li YU Chuang |
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| Abstract: | Sainfoin (Onobrychis viciaefolia cv.Mengnong)under salt stress was used to study the Effects of exogenous calcium on the seedling physiological traits at different concentrations of exogenous calcium(CK:100 mmol/L NaCl;T1:100 mmol/L NaCl+ 10 mmol/L CaCl2 ;T2:100 mmol/L NaCl+20 mmol/L CaCl2 ;T3:100 mmol/L NaCl + 30 mmol/L CaCl2 ;T4:100 mmol/L NaCl + 40 mmol/L CaCl2 ;T5:100 mmol/L NaCl + 60 mmol/L CaCl2 )by testing the height,chlorophyll content,soluble sugar content and root vigor.Results showed that the contents of proline,soluble sugar and chlorophyll and the roots vitality were increased and then de-creased with the increase of Ca2 + concentration compared with CK.The contents of proline,soluble sugar and chlorophyll were significantly increased by 32.3%,and 60% and 9.7% respectively under T3 treatment (P <0.05).The root vigor of seedlings under T3 and T4 treatments were significantly higher than CK (P <0.05). The plant height in T3 treatment was significantly higher than CK (P <0.05).In integrated consideration,T3 treatment was the best. |
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| Keywords: | salt stress sainfoin physiological traits exogenous Ca2 + |
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