东北地区耐荫花生品种苗期筛选及评价  

Screening and Identification of Shade-Tolerant Peanut Varieties at Seedling Stage in Northeast China

作　　者：徐爽 王美文 宋海玲 李想 王婧[1] 赵新华[1] 蒋春姬[1] 刘喜波[1] 于海秋[1] 王晓光[1] XU Shuang;WANG Mei-wen;SONG Hai-ling;LI Xiang;WANG Jing;ZHAO Xin-hua;JIANG Chun-ji;LIU Xi-bo;YU Hai-qiu;WANG Xiao guang(College of Agronomy,Shenyang Agricultural University,Shenyang 110866,China)

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110866

出　　处：《花生学报》2024年第3期42-52,59,共12页Journal of Peanut Science

基　　金：国家花生产业技术体系(CARS-13);辽宁省“揭榜挂帅”科技攻关专项(2021JH/10400034);沈阳市种业创新科技专项(22-318-2-16)。

摘　　要：为快速筛选评价花生品种耐荫性,选用53个适宜东北地区种植的花生品种,设置正常光照和60%遮荫两种光照环境,考察了花生苗期的13个形态指标和生理指标。结果表明:遮荫后参试花生材料的各农艺性状与对照相比呈不同趋势和幅度的变化,各指标间存在不同程度的相关性;通过主成分分析,将苗期13个单项指标转化为互相独立的5个综合指标,累计贡献率71.73%;利用隶属函数法及系统聚类法,将53个花生品种按照苗期耐荫性的强弱分为强耐荫、较耐荫、中耐荫、弱耐荫和不耐荫5种类型;通过逐步回归法建立了花生耐荫性最优评价模型,并筛选出花生株高、主茎节数、下胚轴长、茎干质量、叶干质量、叶面积、叶绿素a含量的耐荫系数作为评价花生苗期耐荫性的主要指标。本试验结论可为花生耐荫品种早期筛选提供理论依据。In order to rapidly evaluate shade-tolerance of peanut varieties,53 varieties suitable for cultivation in Northeast China were selected to investigate 13 morphological and physiological indices at seedling stage,which conformed under normal and 60%shaded light conditions.The results elucidated that:1)The agronomic traits of tested peanut cultivars showed different trends and changes between control and shaded treatments,and there were different degrees of correlation among indices.2)Thirteen individual indicators were transformed into 5 independent composite indicators with a cumulative contribution rate of 71.73%by using principal component analysis.3)Affiliation function method and systematic clustering were employed to divide the 53 varieties into five types as extremely strong shade tolerance,fairly strong shade tolerance,medium shade tolerance,weak shade tolerance and no shade tolerance according to the shade tolerance at seedling stage.4)The optimal evaluation model was constructed by stepwise regression method,by which the shade tolerance coefficients of stem height,main stem node number,hypocotyl length,stem dry mass,leaf dry mass,leaf area,and chlorophyⅡ-a content were screened as the main indices for the evaluation of shade tolerance at seedling stage.In conclusion,the results provided theoretical foundation for the evaluation of shade tolerance peanut cultivars at early growth stage.

关 键 词：花生 耐荫性 品种筛选 多元分析 综合评价 

分 类 号：S565.203.7[农业科学—作物学] S332.1