首页>
中文期刊>
《农业科学学报:英文版》
>Identification of QTL for Popping Characteristics Using a BC_2F_2 Population and Comparison with Its F_(2:3) Population in Popcorn
Identification of QTL for Popping Characteristics Using a BC_2F_2 Population and Comparison with Its F_(2:3) Population in Popcorn
Normal corn germplasm can be used to improve popcorn (Zea mays L.) through 1-2 backcrosses with popcorn as recurrent parents. Popping characteristics of derived lines from popcorn × dent or flint corn crosses play a determinant role in popcorn breeding. Advanced backcross QTL methods can effectively combine QTL identification and plant breeding. 220 selected BC2F2 families developed from a cross between Dan 232, a dent corn inbred line, and N04, an elite popcorn inbred line, were evaluated for three popping characteristics, popping volume, flake size, and popping rate, under two environmental conditions. Using composite interval mapping, a total of 10 significant QTLs were detected, and of these, 2 to 4 QTLs were identified for each trait. Six QTLs had favorable alleles contributed by Dan 232. Comparison with the 15 QTLs detected in the F2:3 families showed that 3 QTLs were the same in both populations. The QTLs should be redetected in generations developed through severe selection. Improved N04 and near isogenic lines could be developed from this BC2F2 population through selfing or another 1 to 2 backcrosses with N04.
展开▼
机译:Reconstructing Population Density Surfaces from Areal Data: A Comparison of Tobler's Pycnophylactic Interpolation Method and Area-to-Point Kriging. 面状数据的人口密度面重构:Tobler’s Pycnophylactic 插值法和面到点克里金插值法的对比
机译:Population Characteristics of Drepanostachyum ludianense in Karst Area of Guizhou, ChinaAU Liu, Jiming (jimingliu@yeab.net) Liao, Xiaofeng Zhang, Dongkai Wang, Min Zhao, Xiaopeng
机译:Comparison of Postoperative Alignment of Total Knee Replacement Using Computer-Assisted Navigation with Conventional Guiding System in Chinese Population with Significant Coronal Femoral Bowing 对比传统全膝关节置换术和电脑导航全膝关节置换术