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首页> 外文会议>2011 International Conference on Remote Sensing, Environment and Transportation Engineering >Effects of exogenous calcium on the seed germination and seedling ions distribution of Trifolium repens under salt-stress
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Effects of exogenous calcium on the seed germination and seedling ions distribution of Trifolium repens under salt-stress

机译：盐胁迫下外源钙对白三叶种子萌发和幼苗离子分布的影响

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Taking experiments of germination and seedling growth of Trifolium repens under salt stress under the conditions of phytotron, the effects of supplementary CaCl2(0.5,1,2,4,8g/L) on germination and seedling growth at NaCl concentration (6g/L) stress, especially on the distribution of Na+, K+, Ca2+, Mg2+ in roots and shoots were studied. The results show that proper supplementary CaCl2(2g/L)can improve seeds germination and seedling growth significantly under 6g/L NaCl, but high level CaCl2(8g/L) inhibit seeds germination, supplementary 2g/L CaCl2 can stimulate growth of seedling, and increase shoot / root ratio, and maintain ion balance (the K+, Ca2+ concentration in the seeding increase and Na+ concentration decrease significantly), and improved salt tolerance, but 8g/L CaCl2 results in adverse effects to the germination and seedling growth, also disturbs the ion homeostasis.
机译：以光子加速器在盐胁迫下白三叶发芽和幼苗生长的实验中，补充CaCl 2 （0.5,1,2,4,8g / L）对发芽和幼苗生长的影响在NaCl浓度（6g / L）胁迫下，尤其是Na + ，K + ，Ca 2 + ，Mg 的分布对根和芽的2 + 进行了研究。结果表明，适量的CaCl 2 （2g / L）可以在6g / L NaCl条件下显着改善种子的发芽和幼苗生长，而高水平的CaCl 2 （8g / L） ）抑制种子发芽，补充2g / L CaCl2可以刺激幼苗生长，增加苗/根比，并保持离子平衡（K + ，Ca 2 + 浓度（Na +浓度显着降低），并提高了耐盐性，但是8g / L CaCl 2 会对发芽和幼苗生长产生不利影响，也干扰了离子稳态。

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