摘要
采用0.2MPa、0.4MPa、0.6MPa、0.8MPa、1.2Mpa共5个浓度梯度的PEG对9个达乌里胡枝子不同种质的种子进行干旱胁迫处理,通过对发芽率、发芽势、发芽指数、活力指数、根长、苗长的综合分析表明,9个达乌里胡枝子种质材料萌发期抗旱性强弱顺序为H04-17>H04-5>H98-45>H98-16>H02-2>H04-3>H98-67>H98-24>H04-7。
Drought resistance of different Lespedeza davurica materials at seed germination stage was evaluated. Seeds were exposed to five levels of osmotic PEG solution. Based on germination rate, relative germination rate, germination index, vigor index, root length and seedling height , the ability of drought resistances at germination stage of the different Lespedeza davurica materials was H04-17〉H04-5〉H98-45〉H98-16〉H02-2〉H04-3〉H98-67〉H98-24〉H04-7.
出处
《中国草地学报》
CSCD
2007年第6期86-91,共6页
Chinese Journal of Grassland
基金
中央级公益性科研院所基本业务费专项项目"扁蓿豆优选品系繁殖技术体系研究"
国家重点基础研究发展计划(2007CB106800)
中国农业科学院院长基金项目"应用AFLP技术对苜蓿杂交后代选择的研究"
关键词
达乌里胡枝子
种质
PEG胁迫
抗旱性
Lespedeza davurica
Germplasm
PEG stress
Drought resistance
