标准切花菊花径与其他重要数量性状的相关与通径分析  

Correlation and path analysis of flower diameter with other quantitative characters in standard cut chrysanthemum

作　　者：韩勇[1] 姚建军 陈发棣[1] 陈素梅[1] 房伟民[1] 叶燕萍 刘兆磊[1] 管志勇[1] 王春昕[1] 

机构地区：[1]南京农业大学园艺学院,江苏南京210095 [2]上海虹华园艺有限公司,上海201606

出　　处：《南京农业大学学报》2012年第1期33-37,共5页Journal of Nanjing Agricultural University

基　　金：国家农业科技成果转化项目(2010GB2360063);国家公益性行业(农业)科研专项(200903020);上海市科技兴农重点攻关项目(沪农科攻字(2009)第3-3号)

摘　　要：以27个标准切花菊品种为试材,对标准切花菊花径及11个重要数量性状进行了遗传相关、相关遗传力及通径分析等。结果表明:12个性状的遗传力较高,达到了70%以上;花径大小与最外轮舌瓣长、次外轮舌瓣长存在极显著遗传相关关系,与次外轮舌瓣宽存在显著遗传相关关系;最外轮舌瓣长和次外轮舌瓣长同花径的相关遗传力与花径的遗传力接近,相关选择效率接近对花径的直接选择效率;选择舌瓣花长、舌瓣花多、管瓣花少、植株高度较高的品种是选育优良切花菊的有效途径。The flower diameter and 11 quantitative traits of 27 cultivars of standard cut chrysanthemum were investigated,and an analysis of genetic correlation,correlative heritability and path analysis were conducted.The results indicated：the heritability of broad sense was relatively high for the 12 characters,being all higher than 70%.The flower diameter was in highly significant positive correlation with the length of the first round ray florets and the length of the second round ray florets,and in significant positive correlation with the width of the second round ray florets;the correlative heritability of the length of the first round ray florets and the length of the second round ray florets related to the flower diameter were higher,respectively,and were close to the heritability of the flower diameter.The efficiency of correlation selection of these two traits would not be much lower than the direct selection of the flower diameter.It is,therefore,concluded that selection should be made for longer and greater number of ray florets,less number of tubular disk florets and higher plant height in selecting excellent standard cut chrysanthemum varieties.

关 键 词：标准切花菊 遗传相关 相关遗传力 通径分析 决策系数 

分 类 号：S682.11[农业科学—观赏园艺]