不同花生品种芽期耐寒性鉴定及评价指标筛选  

Assessment of cold tolerance of different peanut varieties and screening of evaluation indexes at germination stage

作　　者：白冬梅 薛云云[1] 黄莉[2] 淮东欣[2] 田跃霞 王鹏冬 张鑫[1] 张蕙琪 李娜[1] 姜慧芳[2] 廖伯寿[2] BAI Dong-Mei;XUE Yun-Yun;HUANG Li;HUAI Dong-Xin;TIAN Yue-Xia;WANG Peng-Dong;ZHANG Xin;ZHANG Hui-Qi;LI Na;JIANG Hui-Fang;LIAO Bo-Shou(Industrial Crop Research Institute,Shanxi Agricultural University,Taiyuan 030031,Shanxi,China;Key Laboratory of Biology and Genetic Improvement of Oil Crops,Ministry of Agriculture and Rural Affairs/Oil Crops Research Institute,Chinese Academy of Agricultural Sciences,Wuhan 430062,Hubei,China)

机构地区：[1]山西农业大学经济作物研究所,山西太原030031 [2]中国农业科学院油料作物研究所/农业农村部油料作物生物学与遗传育种重点实验室,湖北武汉430062

出　　处：《作物学报》2022年第8期2066-2079,共14页Acta Agronomica Sinica

基　　金：国家自然科学基金项目(31871662);国家现代农业产业技术体系建设专项(CARS-13);国家自然科学基金培育项目(YGJPY1901);山西农业大学生物育种工程项目(YZGC049);山西省农业科学院优秀青年基金项目(YCX2020YQ33)资助。

摘　　要：低温寒害是限制花生产业发展的重要非生物胁迫因子之一。花生品种芽期耐寒能力的强弱是决定花生出苗整齐度和高产高质的重要保障。本研究利用品种综合指标值、权重、隶属函数值、D值对62个花生品种芽期耐寒性进行综合评价。结果表明,D值越大,其耐寒性越强,反之耐寒性越弱。系统聚类分析可将62个品种分为5类,第I类为高耐寒型;第II类为耐寒型;第III类为中间型;第IV类为敏感型,第V类为高感型。相关性分析表明,油酸含量与D值及其他4个耐寒性指标值的相关性未达到显著水平,说明花生油酸含量和花生芽期耐寒性强弱无关;各相对指标值与D值及各相对指标值间均呈极显著正相关,说明花生芽期耐寒性相对指标值之间具有一致性。通过对相对指标特征值、贡献值及权重分析表明,相对发芽率可作为花生芽期耐寒性鉴定的正向指标,相对发芽率越大,其芽期耐寒性能力越强,反之耐寒性能力越弱。本研究筛选出5个高耐寒性品种,建立了以相对发芽率作为花生芽期耐寒性的评价指标,对花生芽期耐寒性的高效鉴定和耐寒性新品种培育及其相关理论研究提供基础材料和高效鉴定方法。Cold temperature and cold damage is one of the important abiotic stress factors restricting the development of peanut industry.The ability of peanut varieties to tolerate cold at germination stage is an important guarantee to determine the uniformity of seeding emergence,high yield,and high quality.In this research,62 peanut varieties with different genotypes were comprehensively assessed for cold tolerance at germination stage by using comprehensive index value,weight,membership function value,and D-value of each variety.The results showed that the higher the D-value,the stronger the cold tolerance,and vice versa.The 62varieties were divided into five categories by systematic cluster analysis:the first category was high cold-tolerant,the second was cold-tolerant,the third was intermediate cold-tolerant,the fourth was sensitive,and the fifth was highly sensitive.Correlation analysis revealed that the correlations between oleic acid content and D-value and other four indexes of cold tolerance did not reach a significant level,indicating that the acid content of peanut oil had nothing to do with the cold tolerance in peanut germination stage.A significant positive correlation between each relative index value and D-value indicated that there was consistency among the relative index values of cold tolerance in peanut germination stage.The analysis of its relative index characteristic value,contribution value,and weight demonstrated that the relative germination rate could be used as the positive index of cold tolerance identification in peanut bud period,that is,the greater the relative germination rate,the stronger its cold tolerance at germination stage,and vice versa.Five varieties with high cold-tolerance were selected,and the relative germination rate as the evaluation index of cold-tolerance in peanut germination stage was established in this study,providing basic materials and efficient assessing methods for the quick assessment of cold-tolerant peanut germplasm in peanut germination stage,cultivation of new

关 键 词：花生品种 低温胁迫 芽期耐寒性 评价指标 

分 类 号：S565.2[农业科学—作物学]