[Objective] This study aimed to conduct genetic analysis on agronomic traits of doubled haploid population in tobacco. [Method] Main agronomic traits of DH population in tobacco were investigated, including plant heig...[Objective] This study aimed to conduct genetic analysis on agronomic traits of doubled haploid population in tobacco. [Method] Main agronomic traits of DH population in tobacco were investigated, including plant height, effective number of leaves, lumbar leaf length, lumbar leaf width, intermodal distance and pericaulome length. Based on the estimation of skewness coefficient and kurtosis coefficient of Hongda x Hicks Broad Leaf populations, the number of gene pairs was calculated. [Result] The number of gene pairs controlling plant height （topping plant height and natural plant height） is 10.20 and 10.80, respectively; the number of gene pairs con- trolling leaf number （effective number of leaves and natural number of leaves） is 6.21 and 6.25, respectively; the number of gene pairs controlling pericaulome length, intermodal distance, lumbar leaf length and lumbar leaf width is 8.51, 15.30, 20.36 and 17.45, respectively. [Conclusion] This study revealed the characteristics of genetic variation of tobacco traits, which provided theoretical basis for the breeding of new varieties.展开更多
A DH population derived from C49S-87/01Y1-1069 was used to study the inheritance of wheat haploid embryo production frequency（EPF） in wheat × maize cross with the mixed major gene and polygene inheritance model...A DH population derived from C49S-87/01Y1-1069 was used to study the inheritance of wheat haploid embryo production frequency（EPF） in wheat × maize cross with the mixed major gene and polygene inheritance model of quantitative traits. The results showed that the EPF of wheat × maize cross was controlled by two dominant epistatic genes and polygene with gene effects of 1.95 for the first major gene, 6.69 for the second one and 2.80 for the polygene. The inheritability of major genes was as high as 72.09%, suggesting that the differences in EPF among wheat materials were mainly influenced by genotype. However, non-genetic factors were still important, especially for wheat materials with low EPF.展开更多
基金Supported by Project of Yunnan Tobacco Company(2010YN02,2011YN04)~~
文摘[Objective] This study aimed to conduct genetic analysis on agronomic traits of doubled haploid population in tobacco. [Method] Main agronomic traits of DH population in tobacco were investigated, including plant height, effective number of leaves, lumbar leaf length, lumbar leaf width, intermodal distance and pericaulome length. Based on the estimation of skewness coefficient and kurtosis coefficient of Hongda x Hicks Broad Leaf populations, the number of gene pairs was calculated. [Result] The number of gene pairs controlling plant height （topping plant height and natural plant height） is 10.20 and 10.80, respectively; the number of gene pairs con- trolling leaf number （effective number of leaves and natural number of leaves） is 6.21 and 6.25, respectively; the number of gene pairs controlling pericaulome length, intermodal distance, lumbar leaf length and lumbar leaf width is 8.51, 15.30, 20.36 and 17.45, respectively. [Conclusion] This study revealed the characteristics of genetic variation of tobacco traits, which provided theoretical basis for the breeding of new varieties.
基金Supported by National High Technology Research and Development Program of China(863 Program)(2011AA10A106)Yunnan Provincial Fund for Applied Basic Researches(2010CC001)Key New Product Development Plan of Yunnan Province(2012BB015)~~
文摘A DH population derived from C49S-87/01Y1-1069 was used to study the inheritance of wheat haploid embryo production frequency（EPF） in wheat × maize cross with the mixed major gene and polygene inheritance model of quantitative traits. The results showed that the EPF of wheat × maize cross was controlled by two dominant epistatic genes and polygene with gene effects of 1.95 for the first major gene, 6.69 for the second one and 2.80 for the polygene. The inheritability of major genes was as high as 72.09%, suggesting that the differences in EPF among wheat materials were mainly influenced by genotype. However, non-genetic factors were still important, especially for wheat materials with low EPF.
