机构地区:[1]河北省农林科学院粮油作物研究所/河北省作物遗传育种重点实验室,河北石家庄050035
出 处:《作物学报》2025年第3期797-811,共15页Acta Agronomica Sinica
基 金:财政部和农业农村部国家现代农业产业技术体系建设专项(CARS-13);河北省现代农业产业技术体系建设专项(HBCT2024040101,HBCT2024040204);河北省花生现代种业科技创新团队(21326316D);河北省农林科学院创新工程(2022KJCXZX-LYS-11)资助。
摘 要:干旱是影响高油酸花生生产的主要限制因素之一,鉴定高油酸花生品种的抗旱性,筛选抗旱指标,对于培育抗旱品种和开展抗旱机制研究具有重要意义。本研究利用26份冀花系列高油酸花生新品种为材料,2022年和2023年在旱棚抗旱池内设置正常灌水和干旱胁迫2个处理,测定成熟期各品种的9个农艺性状、5个经济性状和5个品质性状,采用相关分析、主成分分析、隶属函数、灰色关联度、逐步回归分析、聚类分析以及抗旱性度量值(D)、综合抗旱系数(CDC)、加权抗旱系数(WDC),对其进行抗旱性鉴定及综合评价。结果表明,干旱处理下多数农艺、经济性状的测定值比正常灌水处理低9.73%~49.19%,品质性状比正常灌水处理低0.78%~9.84%。各测定指标的单项抗旱系数(DC)存在一定的相关性。8个主成分可以代表高油酸花生抗旱性89.81%的原始信息。基于D值、CDC值和WDC值的高油酸花生抗旱性排序相近。D值与CDC值、WDC值均呈极显著正相关,相关系数分别为0.885、0.913。依据D值可将高油酸花生划分为3个抗旱级别,其中抗旱型品种9个,中等抗旱型品种10个,干旱敏感型品种7个。抗旱性较突出的高油酸花生有冀花1353和冀花712。产量、主茎高、单株果数和饱果率可作为高油酸花生品种成熟期抗旱性鉴定的主要指标。研究结果可为高油酸花生抗旱育种、抗旱机理、抗旱栽培提供理论参考和生产指导。Drought is one of the primary limiting factors in the production of high oleic acid peanuts.Identifying drought resistance and screening for drought resistance indices in high oleic acid peanut varieties are crucial for breeding drought-resistant cultivars and advancing research on drought resistance mechanisms.In this study,26 high oleic acid peanut varieties of the Jihua series were evaluated for drought tolerance under controlled drought conditions during 2022-2023.At maturity,each variety’s nine agronomic indicators,five economic indicators,and quality indicators were determined under both normal irrigation and drought stress treatments.To identify and assess drought resistance,we employed correlation analysis,principal component analysis,membership function analysis,grey relational analysis,stepwise regression analysis,cluster analysis,comprehensive drought resistance evaluation values(D-values),comprehensive drought resistance coefficients(CDC),and weighted drought resistance coefficients(WDC).The results showed that agronomic and economic indicators under drought treatment were reduced by 9.73%-49.19%compared to those under irrigation,while quality traits decreased by 0.78%-9.84%.Significant correlations were observed among the individual drought resistance coefficients(DC)of each index.Eight principal components were able to represent 89.81%of the original information related to drought resistance in high oleic acid peanuts.The drought resistance of high oleic acid peanuts was consistent across D-values,CDC-values,and WDC-values,with D-values showing strong positive correlations with CDC-values and WDC-values(correlation coefficients of 0.885 and 0.913,respectively).Based on D-values,the high oleic acid peanut varieties were categorized into three groups:nine drought-resistant varieties,ten moderately drought-resistant varieties,and seven drought-sensitive varieties.Among the varieties,Jihua 1353 and Jihua 712 exhibited exceptional drought resistance.Key indicators such as yield,main stem height,pod num
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