NaC1胁迫对两种桑树种子萌发及幼苗生长的影响
North Sericulture(2017)
Abstract
以两种桑树杂交种桂优12和桂优62为试验材料,采用培养皿纸上发芽法研究不同浓度(0,50,100,150 mmol/L) NaC1胁迫对两种桑树种子萌发和幼苗生长的影响.结果表明,随着NaC1浓度的增加,桂优12种子的发芽率、活力指数、幼苗株高、根长及鲜重均呈逐渐降低的趋势,而发芽指数则是先升高后降低,在50 mmol/L时达到最大值;桂优62种子的发芽率和植株鲜重在50 mmol/L时达到最大值,随后随着浓度的增加逐渐降低,其活力指数、幼苗株高及根长则随着NaC1浓度增加呈逐渐降低的趋势.
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