春小麦碳同位素分辨率等性状的遗传分析  

Genetics Analysis of Carbon Isotope Discrimination and Other Traits in Spring Wheat

作　　者：李树华[1] 白海波[1] 吕学莲[1] 董建力[1] 魏亦勤[2] 何海洋[3] 李昱[3] 

机构地区：[1]宁夏农林科学院农业生物技术研究中心,宁夏银川750002 [2]宁夏农林科学院农作物研究所,宁夏永宁750105 [3]宁夏大学农学院,宁夏银川750021

出　　处：《麦类作物学报》2014年第2期181-186,共6页Journal of Triticeae Crops

基　　金：国家自然科学基金项目(31060190);宁夏农业育种专项;澳大利亚国际农业研究中心(ACIAR)项目(CAM2005-111)

摘　　要：为明确春小麦水分利用效率相关生理性状及重要农艺性状的遗传组成,以宁春4号和Drysdale及二者杂交构建的F2群体为材料,采用P1、P2、F1、F2四世代联合分离分析法研究了旗叶稳定性碳同位素分辨率及穗粒重、株高、穗下节长度等性状的遗传模型。结果表明,春小麦旗叶稳定性碳同位素分辨率符合加性-显性-上位性多基因混合遗传模型,无主基因存在;穗粒重符合1对加性-显性主基因+加性-显性-上位性多基因混合遗传模型;株高符合2对等加性主基因+加性-显性多基因混合遗传模型;穗下节长度符合2对加性-显性-上位性主基因+加性-显性多基因混合遗传模型。In order to understand the genetic control of water-use efficiency related physiological characters and important agronomic characters in wheat, using the conjoint combined analysis method for four-generations of P1, P2, F1 and F2, the inheritance model of the carbon isotope discrimination in flag leaf, spike grain weight, and plant height, the peduncle length was conducted in a F2 population derived from a cross between wheat varieties ＂Ningchun 4＂ and ＂Drysdale＂. The results showed that the carbon isotope discrimination in leaves conformed to the additive-dominant-epistasis polygene mod- el; spike grain weight fitted to the model of a pair of additive-dominant major gene and additive-domi- nant-epitasis polygene; plant height met to the model of two pair of additive major gene and additive- dominant polygene; the peduncle length conformed to the model of two pair of additive-dominant-epis- tasis major gene and additive-dominant polygene.

关 键 词：春小麦 碳同位素分辨率 遗传模型 

分 类 号：S512.1[农业科学—作物学] S330