摘要
为探讨快捷鉴定大豆资源抗旱性的表型性状评价指标及评价方法,设置正常灌水和干旱处理,以黄淮海地区122份大豆资源为材料,分析干旱胁迫对大豆主要农艺性状的影响及其变化情况,筛选高效的大豆抗旱性评价表型指标性状。结果表明:干旱胁迫下,不同大豆资源的生物产量变异量最大,其次为单株粒数、株高、单株产量、单株荚数、生育期、百粒重和有效分枝数;前5个性状的变化量之和占8个性状变化总量的90.25%;干旱对各性状的抑制率分别为43.89%、43.29%、40.36%、39.66%、28.13%、19.70%、6.77%和4.02%。通过分析水旱两种条件下主要农艺性状的方差、变异系数、差值及抗旱指数,确定以产量、生物产量、单株荚数和株高4个性状作为抗旱鉴定的评价指标,为抗旱性评价提供了简捷有效的表型指标依据。以高度抗旱大豆品种晋豆21号为对照,基于这4个评价指标,计算标准抗旱指数,根据五级抗旱分类方法,鉴定出5份高度抗旱材料(汾豆92、石豆658、石豆111、阜02-1和周09013-1-1),及11份中高抗旱材料。
In order to explore the evaluation indexes and evaluation methods of phenotypic traits for rapid identification of drought resistance of soybean resources,we set up normal irrigation and drought treatments,used 122 soybean resources in Huang-Huai-Hai region to study the effects of drought stress on main agronomic characters of soybean and its variation,selection of high efficient drought resistance evaluation phenotypic index characters.The results showed that the variation of biomass yield was the largest under drought stress,followed by the seeds number per plant,plant height,yield per plant,pods number per plant,growth period,100-seed weight and effective branching number.The total variation of the first five characters accounting for 90.25%of the total variation of the eight characters,and the inhibition rates of drought to the characters were 43.89%,43.29%,40.36%,39.66%,28.13%,19.70%,6.77%and 4.02%,respectively.Through the analysis of variance,coefficient of variation,difference and drought resistance index under the conditions of flood and drought,the yield,biological yield,pods number per plant and plant height were established as the evaluation indexes of drought resistance,which provided a simple and effective phenotypic index for drought resistance evaluation.In comparison with Jindou 21,based on these four evaluation indicators,calculated the standard drought resistance index,and according to the five-level drought resistance classification method,five high drought-resistant materials(Fendou 92,Shidou 658,Shidou 111,Fu 02-1 and Zhou 09013-1-1),and eleven middle-high drought-resistant varieties were evaluated by this comprehensive drought-resistant index method.
作者
赵晶云
马俊奎
任小俊
任海红
刘小荣
刘学义
ZHAO Jing-yun;MA Jun-kui;REN Xiao-jun;REN Hai-hong;LIU Xiao-rong;LIU Xue-yi(Institute of Cash Crops,Shanxi Agricultural University,Taiyuan 030001,China)
出处
《大豆科学》
CAS
CSCD
北大核心
2022年第4期420-426,共7页
Soybean Science
基金
国家大豆产业技术体系(CARS-04-CES19)
山西农业科学院青年基金项目(YCX2020YQ62)。
关键词
大豆
干旱胁迫
抗旱性鉴定
表型
指标
soybean
drought stress
drought resistance identification
phenotype
indicator
