谷子主要农艺性状的遗传参数分析

Genetic Parameters Analysis of Main Agronomic Traits in Millet

对41份谷子种质资源的7个农艺性状进行了遗传参数研究。结果表明:千粒重、株高和穗长的遗传力较高,受环境影响较小,可在早世代进行选择;穗重、生物产量和穗粒重的遗传变异系数大,相对遗传进度较大,直接选择效果较为理想;相关分析表明:穗粒重与穗重、生物产量呈极显著正相关,与穗长呈显著正相关,穗重、生物产量和穗长三者之间相互呈极显著正相关且遗传力较高。因此,可以通过对穗重、生物产量和穗长的选择来间接提高穗粒重,进而达到提高单位面积产量的目的。

The Genetic Parameters of 7 agronomic traits were assessed in 41 millet germplasm. The results showed that the heritability values of 1000-grain weight,stem height, spike length were comparatively higher, therefore those traits could be selection in early generation; The spike weight, weight per plant, grain weight per spike had the higher genetic variation coefficient and genetic advance, and obtained the best effects on the direct selection; Correlation analysis indicated that the spike weight, weight per plant, spike length were significantly positive correlation with grain weight per spike. The spike weight, weight per plant, spike length were significantly positive correlation with each other and had higher heritability values. Therefore, you can right spike weight, biological yield and spike length of the option to indirectly enhance the grain weight per spike and thus achieve the purpose of improving yield per unit area.