安徽农业科学2011，Vol.39Issue(25)：15586-15587,15596,3.
PEG-6000对高羊茅萌发胁迫效应的研究
Effects of Drought Stress on Germination of Tall Fescue
摘要
Abstract
[Objective] The aim was to explore the effects of drought stress on germination of tall fescue. [ Method] Simulation drought experiment on 14 varieties of tall fescue seeds by PEG-6000 researched its germination effect under drought resistance. [ Result] The relative germination rate of all tall fescue varieties declined with intensifying drought stress level with the water potential of -0.6 Mpa as the turning point; the relative germination rate of tall fescue existed linear relationship with drought stress: Y = 70. 412X + 103. 11 ,r =0.988 8. The sensible water potential range was ≥- 0.40 Mpa for tall fescue under drought stress . LC50 of water potential was - 0.76 Mpa, the lethal water potential was - 1.33 Mpa. Arid Ⅲ , Crossfire Ⅱ and Traple A had stronger drought resistant ability, but Pixie, Infero and Poppoint had weaker drought resistant ability. [Conclusion] This study had provided reference for cultivated pasture and drought resistant breed.关键词
PEG-6000/高羊茅/萌发/胁迫效应Key words
PEG-6000/Tall fescue/Germination/Stress effect分类
农业科技引用本文复制引用
兰剑,沈艳,谢应忠..PEG-6000对高羊茅萌发胁迫效应的研究[J].安徽农业科学,2011,39(25):15586-15587,15596,3.基金项目
“宁夏科技计划”项目. （）
