药隔期低温对小麦生长发育的影响  

Influences of Low Temperature in Connectivum Period on Wheat Growth and Development

作　　者：陈贵菊[1] 陈明丽[2] 王福玉[1] 高国良[1] 江涛[1] 尹逊利 李根英[2] 宋国琦[2] 

机构地区：[1]济宁市农业科学研究院,山东济宁272031 [2]山东省农业科学院作物研究所/小麦玉米国家工程实验室/农业部黄淮北部小麦生物学与遗传育种重点实验室,山东济南250100

出　　处：《山东农业科学》2015年第2期25-28,共4页Shandong Agricultural Sciences

基　　金：山东省科技发展计划项目(2013GNC11025;2014GSF121001);山东省小麦产业技术体系创新团队项目;山东省农业科学院科技创新重点项目(2014CXZ10);山东省农业良种工程项目(2012)

摘　　要：选用6个冬小麦品种为材料,采用人工气候室盆栽和药隔期低温胁迫的方法,研究药隔期低温对冬小麦生长发育和穗部结实率的影响。结果显示,药隔期-2℃低温胁迫24 h和48 h对小麦的生长状态、结实率及千粒重均有不同程度的影响,低温胁迫24 h大部分品种结实率降低不明显,胁迫48 h降低幅度明显增大,表明-2℃低温胁迫时间越长,小麦受害越重。根据结实率的变化判定,6个品种的耐倒春寒能力表现为济麦22、临麦4号﹥烟农19﹥鲁原502、济南17和周麦18。The pot culture experiment was conducted in the growth chamber to study the influences of low temperature at connectivum stage on growth, development and seed setting percentage of six winter wheat euhivars. The results showed that treating at - 2℃ for 24 and 48 hours at connectivum stage had different in- fluences on the growth morphology, seed setting percentage and thousand kernel weight. The seed setting per- centage of most varieties didn＇t decrease obviously after 24 hours of low - temperature stress, but decreased obviously after 48 - hour stress, which indicated that the longer the low - temperature stress at - 2 ℃, the more serious the damage to wheat was. According to the variation of seed setting percentage, the spring frost resistances of Jimai 22 and Linmai 4 were better than Yannong 19, and that of Luyuan 502, Jinan 17 and Zhoumai 18 were the worst.

关 键 词：小麦 药隔期 低温胁迫 生长发育 

分 类 号：S512.103.4[农业科学—作物学]