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考察的 1 9个旱地春谷 7个数量性状的遗传力都较高 ,其中穗长、穗重、穗粒重、株草重的遗传变异系数大 ,相对遗传进度高 ;茎高、千粒重、生育期的遗传变异系数小 ,相对遗传进度低。产量与穗重、穗粒重、千粒重显著正相关 ,千粒重和生育期对产量的直接作用较大。穗重、穗粒重和穗长作为产量选择性状进行改良的前景广阔 ,在早代选择是有效的 ,通过穗重、穗粒重 ,加强对千粒重的正向选择有助于更好地选择高产基因型。
The genetic traits of 7 quantitative traits in spring dry land of 19 dry land were high, among which the genetic variation coefficient of spike length, panicle weight, grain weight per plant and grass weight was high and the relative genetic progress was high. The stem height, thousand-grain weight, fertility The genetic coefficient of variation is small, the relative genetic progress is low. The yield was positively correlated with panicle weight, grain weight per panicle, and 1000-grain weight. The direct effect of grain weight and growth period on yield was greater. Spike weight, spike weight and spike length were promising for improvement of yield-selection traits, and were effective in early generation. The positive selection of 1000-grain weight through panicle weight and spike weight contributed to better selection of high yield genotype.