【摘要】 本文根据小麦二体异附加系的细胞遗传学特点和作物数量遗传学原理,提出了对二体异附加系数量性状进行异染色体效应分析和基因效应分析的方法.并分析了小偃麦二体异附加系31505的部分数量性状的异染色体效应和基因效应.更多还原

【Abstract】 The methods of quantitative genetic analysis were presented for estimating the chromosome effects and the gene effects of quantitative characters in common wheat-wheatgrass alien addition Unes. These methods are based on the cytogenetics of addition lines and the priciple of quantitative genetics. The chromosome effects and the gene effects of a Triticum aestivum-Elytrigia elongata (2n = 70) addition line 31505 were estimated. The main results were as follow: a) 6 quantitative characters in all characters investigated have relation to alien chromosomes. b) Chromosome effects showed dosage effects. Some chromosomes effects affected by the background of common wheat signficantly. c) Additive effects of alien chromosomes ([d’]) are the most important gene effects, and they showed similar in different crosses from the same character. d) There are certain interactions between alien chromosomes and common wheat chromosomes.更多还原