Low Temperature Tolerance of Parental,Inbred and Hybrid Lines of Brassica Napus at Germination Stage  

甘蓝型油菜亲本系和杂交系发芽阶段的耐低温评价

作　　者：GUO Yi-ming LI Mei ZOU Xi-ling LIU Xin-hong LV Yan ZHANG Yao-ting QU Liang WANG Tong-hua 郭一鸣;李莓;邹锡玲;刘新红;吕艳;张瑶婷;曲亮;王同华(湖南省作物研究所,湖南省杂交油菜工程技术研究中心,湖南长沙410125;中国农业科学院油料作物研究所,湖北武汉430062)

机构地区：[1]Hunan Crops Research Institute,Hunan Hybrid Rapeseed Engineering and Technology Research Center,Changsha 410125,PRC [2]Oil Crops Research Institute,Chinese Academy of Agricultural Sciences,Wuhan 430062,PRC

出　　处：《Agricultural Science & Technology》2021年第4期1-10,39,共11页农业科学与技术（英文版）

基　　金：长沙市自然科学基金(kq2014179);湖南省重点研发计划(2020NK2045)。

摘　　要：In order to screen rapeseed accessions with low temperature tolerance in triple cropping area,comprehensive membership function method was used to evaluate the low temperature tolerance of 176 accessions including inbred and hybrid lines of Brassica napus with germination rate,germination energy,germination index and average germination time as indicators.The results showed that 103 accessions with strong low temperature tolerance and 27 accessions with sensitive to low temperature stress were identified.The low temperature tolerance was significant different among accessions(P<0.001)while insignificantly different among different types(sterile lines,maintainer lines,restorer lines,and hybrid lines,P=0.07).The integrated membership function value was significantly correlated with germination rate,germination index and average germination time,which provided valuable information for the future breeding of low temperature tolerant varieties,especially in the middle reaches of the Yangtze River basin.为了在三熟制区筛选耐低温的油菜品系,本研究以发芽率、发芽势、发芽指数和平均发芽时间为指标,通过综合隶属函数法对176份自交或杂交的甘蓝型油菜材料进行耐低温评价。结果表明在9℃处理下鉴定出了103份耐低温和27份低温敏感型材料。其中,各材料间存在极显著差异但不育系、保持系、恢复系和杂交系等不同材料类型间差异不显著,同时,综合隶属函数值与各因素存在显著相关性,可在后期为长江流域选育耐低温品种提供有价值的信息。

关 键 词：Brassica napus Low temperature tolerant Seed germination Integrated membership function value 

分 类 号：S565.4[农业科学—作物学]