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期 刊 ：植物遗传资源学报 2014年 15卷 1期

关键词：航天搭载；变异率；选择；相关分析；

Keywords:Space flight, Variation rate, Choice, Correlation analysis,

摘 要 ：摘要：为了明确大豆航天搭载早期世代农艺性状选择的依据，提高航天搭载育种早期世代选择效果。对6个大豆品种经过航天搭载后的SP2代变异率和SP4代选择效果进行了分析，结果表明遗传力高的SP2代的单株荚数和单株粒数2个农艺性状的变异率与SP4代入选单株数相关达到极显著水平；SP2代遗传力较高底荚高度和节间长度的变异率与SP4代入选单株相关达到显著水平，SP2代遗传力不高的植株高度和主茎节数变异率与SP4代入选单株相关不显著；SP2代对单株荚数、单株粒数、底荚高度、节间长度进行选择有效，而对植株高度和主茎节数选择效果不明显。

Abstract:Abstract: In order to clear early the agronomic traits selection basis in space flight soybean and improve the early space flight breeding generation selection effect. Analysis of variation rate for SP2 and selection effect for SP4 after space flight for six soybean breed have been done. The result show that the variation rate of higher heritability for the plant pod and seed number of SP2 and choice plant of SP4 were highly significant level. The variation rate of not high heritability for plant height and the number of node and choice plant of SP4 were not significant. The agronomic traits selection of SP2 were effective for the number of plant pod and seed, the first pod hight, the Length of node but for plant height and the number of node.

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