Ten upland cotton strains exhibiting 3 fiber quality traits and 8 yield traits, were grown for two years in an investigation of the correlation between grey relational analysis （GRA） and genetic identity in heterosi...Ten upland cotton strains exhibiting 3 fiber quality traits and 8 yield traits, were grown for two years in an investigation of the correlation between grey relational analysis （GRA） and genetic identity in heterosis of cot- ton hybrid. The aim was to establish the optimal approach for heterosis prediction and parent selection. Plant traits data were collected and analyzed for GRA. In addition, 72 simple sequence repeat （SSR） markers were examined and 148 polymorphisms were detected. Correlation analysis of GRA, genetic identity, Ft fiber quality and yield heterosis was conducted. Significant differences were observed between the two analytic methods, whereas compa- rable predictions were given for yield heterosis. GRA for yield exhibited slightly higher correlation than genetic identity analysis, with a correlation coefficient of 0.49. GRA and genetic analysis exhibited overlapping yet dis- tinct advantages in heterosis prediction. Therefore, these analytical methods should be integrated to achieve the op- timal heterosis prediction and parent selection.展开更多
To identify the theoretic foundation for maintaining and improving high quality varieties and breeding new F1 hybrids, flower color segregation occurred in the offspring in both self-pollination and cross- pollination...To identify the theoretic foundation for maintaining and improving high quality varieties and breeding new F1 hybrids, flower color segregation occurred in the offspring in both self-pollination and cross- pollination of varieties of different colors were investigated. The main results indicate that the heredity of Cyclamen persicum color follows both quantitative and qualitative hereditary regularity. All genes can be classified as two groups of the throat-gene and coronal-gene occupying different spots on the chromosome. The colored gene is the dominant gene, while the white gene is the recessive one. The gene groups and their quantity determine the color of cyclamen persicum. And sometimes the throat- gene and the coronal-gene take a recombination, forming a new type of flower.展开更多
基金Hi-tech Research and Development Program of China(No.2012AA101108-02)National Science and Technology Pillar Program(No.2011BAD35B05)Modern Agro-industry Technology Research System(No.CARS-18-05)
文摘Ten upland cotton strains exhibiting 3 fiber quality traits and 8 yield traits, were grown for two years in an investigation of the correlation between grey relational analysis （GRA） and genetic identity in heterosis of cot- ton hybrid. The aim was to establish the optimal approach for heterosis prediction and parent selection. Plant traits data were collected and analyzed for GRA. In addition, 72 simple sequence repeat （SSR） markers were examined and 148 polymorphisms were detected. Correlation analysis of GRA, genetic identity, Ft fiber quality and yield heterosis was conducted. Significant differences were observed between the two analytic methods, whereas compa- rable predictions were given for yield heterosis. GRA for yield exhibited slightly higher correlation than genetic identity analysis, with a correlation coefficient of 0.49. GRA and genetic analysis exhibited overlapping yet dis- tinct advantages in heterosis prediction. Therefore, these analytical methods should be integrated to achieve the op- timal heterosis prediction and parent selection.
基金The project was funded by Hebei Forestry Bureau (0008261)
文摘To identify the theoretic foundation for maintaining and improving high quality varieties and breeding new F1 hybrids, flower color segregation occurred in the offspring in both self-pollination and cross- pollination of varieties of different colors were investigated. The main results indicate that the heredity of Cyclamen persicum color follows both quantitative and qualitative hereditary regularity. All genes can be classified as two groups of the throat-gene and coronal-gene occupying different spots on the chromosome. The colored gene is the dominant gene, while the white gene is the recessive one. The gene groups and their quantity determine the color of cyclamen persicum. And sometimes the throat- gene and the coronal-gene take a recombination, forming a new type of flower.
