应用隶属函数法综合评价水稻主栽品种抗旱性的研究  

Evaluation of Drought Tolerance of Widely-used Rice Varieties with Subordinate Function

作　　者：刘三雄[1,2] 黎用朝 吴俊[4] 闵军 常硕其[4] 刘利成 卢向阳[2] 邓启云[2,4] 

机构地区：[1]湖南省水稻研究所,湖南长沙410125 [2]湖南农业大学,湖南长沙410128 [3]农业部长江中下游籼稻遗传育种重点实验室,湖南长沙410125 [4]湖南杂交水稻研究中心,湖南长沙410125

出　　处：《杂交水稻》2015年第1期74-78,共5页Hybrid Rice

基　　金：国家现代农业产业技术体系建设专项-水稻(CARS-01-07);"十二五"国家"863"计划项目(2012AA101103);湖南省农业科学院科技创新项目

摘　　要：选用部分形态、产量和生理指标,应用隶属函数法对26个主栽水稻品种进行了抗旱性综合评价,结果表明:在干旱胁迫条件下,各品种的单株产量、单株有效穗、结实率、穗长及叶片相对含水量、叶绿素含量显著下降;根据这些指标的平均隶属函数值,鉴定出了Y两优1号等7个抗旱性较强的品种和两优培九等3个对干旱敏感的品种。Using drought-tolerant variety IAPAR 9（ an upland rice from Brazil） and drought-sensitive variety IR64 as the controls,26 rice varieties widely used in production were evaluated on drought tolerance with subordinate function based on morphological,physiological and yield traits. The results showed that the trait values of grain yield per plant（ GYP）,effective panicles per plant（ EPP）,seed-setting rate（ SSR）,panicle length（ PL）,leaf relative water content（ RWC） and chlorophyll content（ SPAD） in all tested varieties decreased significantly under the conditions of drought stress. The subordinate function values of these traits of all tested rice varieties were thus calculated. Based on the averaged subordinate function values of all these traits,seven varieties including Y Liangyou 1 were identified as drought-tolerant variety and three including Liangyou Peijiu as drought-sensitive variety.

关 键 词：水稻 抗旱性 隶属函数法 

分 类 号：S511.01[农业科学—作物学] S11