论文部分内容阅读
以抗倒耐密品种中单909亲本郑58和HD568创建重组自交系群体,使用茎秆强度测定仪测量在不同环境下7个时期群体家系茎秆穿刺强度,通过表型分析、联合方差分析以及多世代联合分离分析方法研究茎秆穿刺强度遗传规律。结果表明,茎秆穿刺强度狭义遗传率为75.58%,其遗传符合3对加性-上位性主基因+加性多基因遗传模型(即G-1模型)。不同环境中主基因遗传率分别为36.63%和65.75%,而多基因遗传率分别为38.14%和10.37%,两者在控制茎秆强度遗传特性上均具有重要作用。该研究结果可为玉米抗倒伏材料的选择提供有效方法和理论依据。
The recombinant inbred lines (Zheng 58 and HD 568) were established with single 909 parents in resistant and resistant varieties (Zheng 58 and HD 568), and the stalk punctures were measured by stalk strength meter in seven groups at different periods. Phenotypic analysis and covariance analysis As well as the multi-generation joint separation and analysis methods to study the genetic rules of stem puncture strength. The results showed that the narrow heritability of stalk puncture strength was 75.58%, which was consistent with 3 pairs of additive - epistatic major gene plus additive polygene genetic model (G - 1 model). The heritabilities of major genes in different environments were 36.63% and 65.75% respectively, while the polygene heritabilities were 38.14% and 10.37%, respectively. Both of them had an important role in controlling the genetic characteristics of stalk strength. The results of this study can provide effective methods and theoretical basis for the selection of corn lodging materials.