Correlation and path coefficient studies in maize (Zea mays L.) genotypes under 40% soil moisture contents
Correlation and path coefficient studies in maize (Zea mays L.) genotypes under 40% soil moisture contents
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相关%20and%20path%20系数%20studies%20in%20maize%20(Zea%20mays%20L.)%20基因型%20under%2040%%20soil%20moisture%20contents
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
M. Elahi
中科院分区：
文献类型：
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作者：
Q. Ali;M. Hammad;Nadeem Tahir;M. Ahsan;S. Basra;J. Farooq;M. Waseem;M. Elahi
本研究于2009年2月在40%水分条件下，在费萨拉巴德农业大学植物育种与遗传学系温室内进行了40个玉米品种的遗传参数和性状关联的估计。对各数量性状的数据进行记录、统计分析。通过计算通径系数来估计个体性状对鲜梢长度的贡献。通径系数的研究表明，在40%水分条件下，鲜根长度对鲜梢长度的直接影响最大，其次是根干重、根密度、叶温和干枝重。结果表明，鲜根长、根干重、根密度、叶温和干地上部重是影响玉米幼苗鲜梢长度的主要性状，可根据这些性状进行选择。
关键词：玉米，相关，通径系数，基因，表型，巴基斯坦.a
The present study pertaining to the estimation of genetic parameters and characters association in forty maize genotypes was conducted in the glasshouse of the Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, during the crop season in February 2009 at 40% moisture level. The data for various quantitative characters were recorded, statistically analyzed. The path-coefficients were computed to estimate the contribution of individual characters to the fresh shoot length. Investigations regarding path coefficient showed that fresh root length had maximum direct effect on fresh shoot length at 40% moisture level followed by dry root weight, root density, leaf temperature and dry shoot weight. It was concluded that fresh root length, dry root weight, root density, leaf temperature and dry shoot weight are the characters which contribute largely to fresh shoot length of maize seedlings and selection can be made on the basis of these characters.
Key words: Zea mays, correlation, path coefficient, genotypic, phenotypic, Pakistan.a