冬小麦拔节后幼穗低温敏感期的鉴定  

Identification of young ear's low temperature sensitive phase after jointing stage of winter wheat

作　　者：曾正兵[1] 钟秀丽[1] 王道龙[1] 郭金耀[2] 赵鹏[1] 王晓光[1] 韩立帅[1] 

机构地区：[1]中国农业科学院农业环境与可持续发展研究所,北京100081 [2]山西农业大学,山西太谷030801

出　　处：《自然灾害学报》2006年第S1期297-300,共4页Journal of Natural Disasters

基　　金：国家十一五科技支撑计划课题(2006BAD04B08)

摘　　要：利用移动式人工霜箱,进行了模拟霜冻害的实验,研究分析了冬小麦拔节期幼穗抗霜力随幼穗分化进程的变化。结果发现,随着幼穗分化期的推进,冬小麦幼穗的抗霜力总体呈下降的趋势。从雌雄蕊末期发育进入药隔前期,幼穗的抗霜力骤然下降,在雌雄蕊分化期之前以及药隔期之后,抗霜力的下降趋势较为平缓。表明药隔期之后为冬小麦幼穗分化的低温敏感期。品种抗霜性的鉴定适宜在药隔期开展。该研究结果对于抗霜品种的筛选以及霜冻害的防御工作有一定的参考意义。Utilizing the movable artificial frost chamber,simulation experiment of frost damage was carried out to find how frost resistance of young ears(FRYE)variate with the differentiation phases proceeding.The results indi- cate that FRYE tends to decrease during the whole jointing stage.Upon developing into anther connective formation phase from stamens and pistils formation phase,FRYE drops sharply.During the period before stamens and pistils formation phase and that after anther connective formation phase,FRYE...

关 键 词：冬小麦 抗霜力 幼穗分化期 低温敏感期 

分 类 号：S512.11[农业科学—作物学]