论文部分内容阅读
小麦品种间杂种一代具有明显优势,不同性状的杂种一代优势程度有差异,据观测的七个经济状性的优势表现,除穗长、千粒重的优势显著程度显著水准外,其它性状如株高、结实小穗数、每穗粒数、小穗粒数、穗粒重等均达极显著水准。各性状的杂种一代优势表现与其双亲平均值密切相关,尤其注意大值亲本的作用,杂种一代值明显表现为倾大值及超大值亲本。因此,正确选配大值亲本对获得强优势组合具有重要意义。通过回归方程,可以双亲平均值及大值亲本值预测杂种一代优势值。
The hybrids between wheat cultivars had obvious advantages. The dominant traits of hybrids differed in different traits. According to the observed advantages of seven economic traits, except for the spike length and 1000-grain weight, significant significant differences were found in other hybrids. Other traits such as plant height, The number of spikelets per spike, the number of spikelets per panicle, the number of spikelets per panicle, and the grain weight of spike reached the extremely significant level. The performance of hybrids of each trait was closely related to the average value of their parents, with particular attention paid to the effect of large-value parents. The value of hybrids was significantly higher than that of parents. Therefore, the correct selection of large-value parents to obtain a strong combination of great significance. Through the regression equation, the average value of both parents and the value of the large parent value prediction heterosis generation value.