CHEN Man-man
College of Agriculture, Shanxi Agricultural University, Jinzhong 030801TIAN Xiang
Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Taiyuan 030031CHEN Ling
Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Taiyuan 030031WANG Hai-gang
Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Taiyuan 030031LIU Si-chen
Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Taiyuan 030031LI Zhi-jiang
Institute of Crop Variety Resources, Heilongjiang Academy of Agricultural Sciences, Harbin 150086MA Jin-feng
Institute of Crop Variety Resources, Heilongjiang Academy of Agricultural Sciences, Harbin 150086QIAO Zhi-jun
College of Agriculture, Shanxi Agricultural University, Jinzhong 030801;Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau of Ministry of Agriculture, Shanxi Taiyuan 030031DIAO Xian-min
Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau of Ministry of Agriculture, Shanxi Taiyuan 030031;Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 1000811.College of Agriculture, Shanxi Agricultural University, Jinzhong 030801;2.Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Taiyuan 030031;3.Institute of Crop Variety Resources, Heilongjiang Academy of Agricultural Sciences, Harbin 150086;4.Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau of Ministry of Agriculture, Shanxi Taiyuan 030031;5.Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081
Foundation project: China Modern Agricultural Industrial Technology System (CARS-06-14.5-A16)
To provide the theoretical basis for germplasm innovation and breeding in foxtail millet, disclosing the genetic variation of the key agronomic traits, exploration of the genetic factors affecting the content of amylose and yellow pigment in grain, and identification of the new lines with excellent performances become of significant interest. In this study, the recombinant inbred lines derived from ‘Nenxuan 15’ crossed with ‘Huangjinmiao’ were planted in the experimental field located in Dongyang county of Shanxi province, P.R. China (2020 and 2021). Genetic variation analysis, correlation analysis, and regression analysis were carried out on two food quality traits (amylose and yellow pigment in grain), and eight quantitative traits including plant height, panicle length, leaf area, stem diameter, panicle diameter, stem pitch number, single panicle weight and panicle grain weight. The significant differences on yellow pigment content, amylose content, leaf area, and panicle diameter between parents were observed. The RIL population lines showed comprehensive variations with (close to) normal distributions at these traits, showing two-way super parental separation. The coefficient of variation in each character ranged from 8.05% to 35.32%. According to the comprehensive analysis of the two-year data, the coefficient of variation on single panicle weight and grain weight per panicle were high, whereas the coefficient of variation on plant hight and amylose content were low. The content of yellow pigment was positively correlated with amylose, plant height, stem pitch number and grain weight, whereas it was negatively correlated with leaf area. Amylose content was negatively correlated with leaf area, stem diameter, and panicle length, whereas positively correlated with the stem pitch number. Furthermore, regression analysis showed that leaf area, plant height, and panicle length were the most important factors affecting yellow pigment content. Leaf area and panicle length had a negative effect on amylose content, whilst single panicle weight, panicle diameter, and stem pitch number had a positive effect on amylose content.