关键词: 小麦-冰草多粒新种质3228, 穗粒数, 遗传分析, 有效利用

Abstract:

【Objective】 This research was conducted to study the utility value and the inheritance of the kernels per spike in the novel wheat-Agropyron germplasm 3228. 【Method】 A field experiment in five wheat regions was designed to explore the stability of kernels per spike of wheat-Agropyron germplasm 3228. Inheritance analysis of the F2 population derived from the cross between 3228 and Jing4839 was carried out using mixed major gene plus polygenes inheritance model of quantitative traits. 【Result】 Results of field experiment showed that the kernels per spike of 3228 were more 90 and has the desirable stability in different planting regions. The analysis result of the F2 population in which the 78.11% individual plants have more kernels per spike than Jing4839 indicated that the kernels per spike of the 3228 was mainly controlled by one major gene, the heritability value and the additive effect of the major gene were estimated as 27.81% and 9.33, respectively. 【Conclusion】 The large kernels number per spike of 3228, which mainly controlled by one major gene, has the better environmental stability, which suggested that the kernel gene would play an important role in improving wheat yield through increasing the kernels per spike.

Key words: common wheat-Agropyron germplasm 3228, kernels per spike, inheritance analysis, effective utility