摘要
以不同渗透势的PEG(6000)溶液模拟水分胁迫条件,通过相对发芽率、萌发抗旱指数、活力指数3个指标,研究了14个不同地理种群紫茎泽兰(EupatoriumadenophorumSpreng.)的耐旱能力,并采用模糊隶属法用上述3个指标对14个不同种群的耐旱性进行综合评价.结果表明,LP、PZH、YJ种群较为耐旱,耐旱隶属函数总平均值分别0.766、0.689、0.658,SM种群则较为敏感,耐旱隶属函数总平均值为0.065.
Relative germination rate, promptness index, vigor index of crofton weed (Eupatorium adenophorum Spreng.) from 14 populations were tested under different osmotic potentials (PEG6000) to evaluate their drought resistance using the fussy subordinate function. The results indicated that populations LP, PZH and YJ had relatively higher drought resistance while population SM had lower resistance. The average subordinate values of the former three populations with resistance to drought stress were 0.766, 0.689 and 0.658, while the later was susceptible with the value of 0.065. Fig 2, Tab 3, Ref 23
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2005年第3期308-311,共4页
Chinese Journal of Applied and Environmental Biology
基金
国家重点基础研究发展计划资助(2002CB111402-3-6)
国家自然科学基金项目(30170619)资助~~
关键词
紫茎泽兰
种群
水分胁迫
耐旱性
Eupatorium adenophorum Spreng
population
water stress
drought resistance
