Influences of salinity and water stress on the seed germination of two species of Salsola L.
Influences of salinity and water stress on the seed germination of two species of Salsola L.
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发表时间：
2007
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通讯作者：
Zhang Xi-ming
中科院分区：
文献类型：
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作者：
Zhang Xi-ming
The paper studied influence of salinity and water stress on the seed germination of Salsola nitraria and Salsola affilis.The results indicated that the optimal constant temperatures for Salsola nitraria and Salsola affilis are 25℃ and 20℃.The germinated regularity of two species of Salsola L.was similar in saline and PEG solutions: the germination percentage and germination rate of both species decreased with decreasing water potential in all types of solutions.The lowest water potential of Salsola nitraria germination approaches-7.2 MPa under salinity stress,the lowest water potential of Salsola affilis germination approaches-6.15 MPa under salinity stress;the lowest water potentials of Salsola nitraria and Salsola affilis germination are not exceed-2.0 MPa under water stress.Germination percentage and germination rate of Salsola nitraria are obviously more than those of Salsola affilis in same water potential.The salinity tolerance capacity of Salsola nitraria and Salsola affilis was stronger more than the water tolerance ability.The extreme values of salinity tolerance of Salsola nitraria and Salsola affilis are-6.29 MPa and-6.03 MPa at the optimal temperature.
