摘要
观察了三个不同品种小麦种子在6个NaCl浓度(0 g.L-1、3 g.L-1、6 g.L-1、9 g.L-11、2 g.L-1、15g.L-1)下的发芽率及胚芽和胚根的生长.结果表明,在盐胁迫下,随盐浓度的增加,小麦的发芽率、发芽指数及活力指数呈下降趋势,且活力指数对盐害反映最为明显.平均发芽时间随NaCl浓度的增加而变长.胚芽和胚根长度随盐浓度的增加受抑制程度亦增加.小麦的根数在低盐浓度(<6 g.L-1)下增加,高盐浓度(≥6g.L-1)下减少,不同品种小麦对盐胁迫的反映不同,永良4的耐盐性较强,永良12次之,黑小麦76较弱.
The paper studied on germination percentage, sprouts and radicals growth of three wheat varieties seeds in different NaC1 solution concentration（which were 0 g·L^-1, 3 g·L^-1, 6 g·L^-1, 9 g·L^-1, 12 g·L^-1, 15 g·L^-1 ）. The results showed that： under the condition of salt stress, germination percentage, germination index and vigor index of them had declined tendency with increasing NaCl content, and vigor index was the most sensitive to salt stress. The average germination time was prolonged with increasing NaCl content, meanwhile sprout and radical length were also restrained with increasing NaCl content. The number of radicals increased under low salt stress（ lower than 6 g·L^-1）, but decreased under high salt concentration（higher than or equal to 6 g·L^-1）. Different wheat varieties had different responses to salt stress, YongLiang4 had better tolerance than other two wheat varieties, the inferior one was YongLiangl2, Black Wheat76was the last one.
出处
《内蒙古民族大学学报（自然科学版）》
2007年第3期297-301,共5页
Journal of Inner Mongolia Minzu University：Natural Sciences
关键词
小麦
盐胁迫
发芽率
Wheat
Salt stress
Germination percentage
