寒旱农业科学2024，Vol.3Issue(6)：522-526,5.DOI:10.3969/j.issn.2097-2172.2024.06.006
陇东旱地冬小麦品种抗旱性鉴定
Characterization of Drought Resistance of Winter Wheat Varieties in Longdong Drylands
摘要
Abstract
To study the progress and current situation of drought-resistant breeding under the special arid climate conditions in Longdong,14 new winter wheat varieties(lines)selected and bred in Longdong dry land in the past 20 years were chosen as materials.Drought resistance throughout the entire growth period was identified using grain yield,drought resistance index and other indicators,with full growth period drought stress tests conducted in dry sheds.Results showed that the drought resistance index of Longyu 4 and Ningmai 5 ranged between 1.100 to 1.299 with a drought resistance level of 2.Longyu 7 and Longjian 387 had drought resistance indices ranged between 0.700 and 0.899 with a drought resistance level of 4,the remaining 10 varieties had a drought resistance index ranging from 0.900 to 1.099,with a drought resistance level of 3.Varieties with a drought resistance level 2 to 3 accounted for 85.7%of the tested varieties.Principal component analysis of yield traits indicated that Longyu 4 and Ningmai 5,with a drought resistance level of 2,showed no significant changes in effective panicle number,grain number per panicle,and thousand-grain weight under drought stress.Longyu 7 and Longjian 387,with a drought resistance level of 4,showed significant reductions in effective panicle number,grain number per panicle,and thousand-grain weight under drought stress.For the remaining 10 varieties(lines)with a drought resistance level of 3,only one of the three main yield traits,i.e.,effective panicle number,grain number per panicle,and thousand-grain weight,changed under drought conditions,with no overlapping changes in two traits.关键词
陇东旱地/冬小麦/抗旱性/抗旱指数/产量因子Key words
Longdong Dry land/Winter wheat/Drought resistance/Drought resistance index/Yield component分类
农业科技引用本文复制引用
杨虓,刘自成,夏先春..陇东旱地冬小麦品种抗旱性鉴定[J].寒旱农业科学,2024,3(6):522-526,5.基金项目
甘肃省旱地冬小麦种质创新与应用工程研究中心资助项目(甘发改高技[2017]1162号) （甘发改高技[2017]1162号）
陇东旱地作物种质改良及产业化协同创新中心资助项目(甘教技[2019]23号) （甘教技[2019]23号）
甘肃省自然科学基金项目(21JR7RM191) （21JR7RM191）
甘肃省重点研发项目(22YFM126). （22YFM126）
