不同生态区主要育成谷子品种苗期抗旱性鉴定  

Evaluation on Drought Tolerance of Foxtail Millet Cultivars Developed from Different Ecological Regions

作　　者：秦岭[1] 杨延兵[1] 陈二影[1] 张华文[1] 王海莲[1] 刘宾[1] 陈桂玲[1] 管延安[1] 

机构地区：[1]山东省农业科学院作物研究所,山东济南250100

出　　处：《山东农业科学》2016年第6期28-31,共4页Shandong Agricultural Sciences

基　　金：现代农业产业技术体系建设专项(CARS-07-12.5-A11);山东省农业良种工程项目(2014LZ01-01-04);山东省农业科学院青年科研基金项目(2014QNM29)

摘　　要：采用反复干旱法对来自不同生态区的201份谷子[Setaria italica（L.）Beauv.]品种（系）进行苗期抗旱性鉴定,根据幼苗存活率,将其划分为高度抗旱、抗旱、较抗旱、弱抗旱和不抗旱5个等级,其中高度抗旱15个,占7.46%;抗旱48个,占23.88%;较抗旱80个,占39.80%;弱抗旱47个,占23.38%;不抗旱11个,占5.47%。干旱条件下201份材料的幼苗存活率平均为71.02%,变幅为1.05%~100.00%,相对苗高的变幅为23.92%~95.00%,相对生物量的变幅在11.37%~83.10%之间,变异系数达50.98%。幼苗存活率与相对苗高、相对鲜重以及相对生物量均呈正相关,与相对苗高、相对鲜重的相关性极显著,与相对生物量的相关性显著。Drought tolerance was investigated during seedling stage with repeated drought stress. Two hundred and one foxtail millet varieties were classified into 5 groups as extremely drought tolerance,drought tolerance,moderate drought tolerance,less drought tolerance and no drought tolerance based on seedling survival rate. The 15 varieties had the extremely drought tolerance,which occupied 7. 46%. The 48 varieties had drought tolerance,which occupied 23. 88%. The 80 varieties had moderate drought tolerance,which occupied39. 80%. The 47 varieties had less drought tolerance,which occupied 23. 38%. The 11 varieties had no drought tolerance,which occupied 5. 47%. The average seedling survival rate of 201 varieties was 71. 02% under drought stress with the variation range of 1. 05% to 100. 00%. The variation range of relative seedling height was from 23. 92% to 95. 00%. That of relative biomass range was between 11. 37% and 83. 10% with the variation coefficient of 50. 98%. The seedling survival rate had extremely significant correlation with the relative seedling height and relative biomass and significant correlation with the relative fresh weight.

关 键 词：抗旱性 反复干旱法 存活率 谷子 苗期 

分 类 号：S515.034[农业科学—作物学]