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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (3): 205-205.

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盐胁迫对4种禾本科牧草种子萌发和幼苗生长的影响

覃广泉,陈 平,苏东海   

  • 出版日期:2005-03-05 发布日期:2005-03-05

Effects of salt stress on seed germination and seedling growth of 4 graminaceous pasture cultivars

Qin Guangquan，Chen Ping，Su Donghai   

  • Online:2005-03-05 Published:2005-03-05

摘要： 通过NaCl溶液(0、1.5、3.0、6.0、9.0g/L)处理4种禾本科牧草种子，测定了种子萌发和幼苗生长有关指标。结果表明：美洲狼尾草较耐盐，在9.0g/L盐溶液处理下比其它品种维持了高的发芽率、发芽指数、活力指数，并且其相对值高，以及较高的相对苗长和根长，盐处理显著提高几种牧草幼苗质膜相对透性，总体上降低胚乳的利用速度和利用效率。

Abstract: Experiment was conducted to study salt stress (salt conc. 0,1.5,3.0,6.0,9.0g/L) on seed germination and seedling growth of 4 graminaceous pasture cultivars. The results showed that salt-tolerant ability of pennisetum americanium was higher than others, it maintained higher value and relative value of seed germination rate, germination index , vigor index, and shoot height and root length and its relative value was higher than others treated with salt 9.0g/L. Salt stress increased relative membrane permeability of seedlings significantly, and inhibited the use speed and rate of endosperm overall.