“中苜-号”紫花苜蓿耐盐遗传特性初步研究

doi:10.11733/j.issn.1007-0435.1998.03.002

›› 1998, Vol. 6 ›› Issue (3): 162-170.DOI: 10.11733/j.issn.1007-0435.1998.03.002

“中苜-号”紫花苜蓿耐盐遗传特性初步研究

杨青川, 苏加楷, 耿华珠

中国农业科学院畜牧研究所, 北京, 100094

出版日期:1998-08-15 发布日期:1998-08-15
基金资助:
国家“九五”科技攻关项目

Preliminary Study on Salt Tolerance Genetic Characters in the Newly Released Salt Tolerant Alfalfa Cultivar "Zhongmu No.1

Yang Qingchuan, Su Jiakai, Geng Huazhu

Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094

Online:1998-08-15 Published:1998-08-15

摘要/Abstract

摘要： 以“中苜-号”紫花苜蓿耐盐新品种为材料,应用NCⅡ杂交试验方,研究其耐盐遗传参数,旨在为今后苜蓿耐盐育种提供理论依据。结果表明,在盐胁迫下,苜蓿的干重、株高和分校数诸性状的加性效应大于显性效应,狭义遗传力较大,分别为0.425、0.387和0.484,具有通过选择进-步提高耐盐性的遗传潜力。通过盐碱地表型选择的研究,从中得到102个单株的-股配合力,应用聚类分析方法将其划分为三类：其中,高、中、低-般配合力植株分别为47株,33株和22株。并已从中已得到高度和中度-般配合力植株相互杂交后所产生的种子。

关键词: 紫花苜蓿, 耐盐新品种, 耐盐遗传参数, -般配合力, 聚类分析

Abstract: The genetic parameters were examined in the new salt-tolerant cultivar ZhongmuNo.1.The North Carolina mode Ⅱ Crossing Design and Analysis were followed in use.Our results showedthat the salt stress, dry weight, plant height and branch stem number had relatively high additive effectsthan the dominant effect singly Narrow-sense heritabilities were estimated at 0.425,0.387& 0.484 re-spectively.The relatively high additive genetic component estimated in the study suggested that the alfalfabreeding genotypes were possessing mere tolerances than the existed new salt tolerant strain that it shouldbe possibly used through the crossing selected salt-tolerant individuals.The GCA of 102 individuals were studies through their half-sib progeny salt tolerance test.A com-prehensive appraisal of the salt tolerant GCA in 102 individuals was estimated by cluster analysis.The re-sults indicated that 47 individuals had high GCA, 33 individuals with medium GCA & 22 individuals withrelatively low GCA respectively.All seeds were obtained through crossing each other individuals with bothhigh and medium GCA.

Key words: Alfalfa, New salt-tolerant cultivar, Salt-tolerant genetic parameters, GCA, Cluster analysis

杨青川, 苏加楷, 耿华珠. “中苜-号”紫花苜蓿耐盐遗传特性初步研究[J]. , 1998, 6(3): 162-170.

Yang Qingchuan, Su Jiakai, Geng Huazhu. Preliminary Study on Salt Tolerance Genetic Characters in the Newly Released Salt Tolerant Alfalfa Cultivar "Zhongmu No.1[J]. , 1998, 6(3): 162-170.

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“中苜-号”紫花苜蓿耐盐遗传特性初步研究

Preliminary Study on Salt Tolerance Genetic Characters in the Newly Released Salt Tolerant Alfalfa Cultivar "Zhongmu No.1

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