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本文以我所近年来选育出的8个高产、抗病品种(系)为材料,研究亚麻籽实单产性状的选择指数。结果表明亚麻籽实单产性状遗传力较低,直接选择效果差,通过相关性状进行间接选择效果亦不好。根据所有选择指数方程对单产性状进行选择,只有综合主茎分枝数,单株桃数,单桃粒数,单株粒重四性状对单产进行间接选择其效果才最佳,选择效率达153.6％,用选择指数对供试的8个品种评审结果表明,坝亚7号是综合性状优良的高产、抗病品种,1009是综合性状最差的品种。
In this paper, eight high-yielding and disease-resistant varieties (lines) bred in recent years in China were used as materials to study the selection index of flaxseed yield traits. The results showed that the heritability of flaxseed yield traits was low, the direct selection effect was poor and the indirect selection by the related traits was not effective. According to all the selection index equations to select the traits of yield, only the comprehensive main stem branch number, peach number, peach grain number, grain weight per trait of indirect selection of the yield of its best, the selection efficiency of 153.6 %. The evaluation results of eight varieties tested with selection index showed that Ba Ya 7 was a high-yielding and disease-resistant variety with good comprehensive characters, and 1009 was the worst variety with comprehensive characters.