Agronomic performance and seed quality of a new source of yellow seeded Brassica oleracea
Brassica oleracea var acephala is one of the viewing plants in China, the leaf of the wild materials is floweriness but the agronomic characteristics are very poor. In 1990, some seedlings of B. oleracea var acephala were planted in the farm of Southwest University, the pedigree selecting had been done in later years. In 1994, some yellow-seeded plants in one of the wild materials were found. After more than ten generations of pedigree selecting and selfing by peeling bud, 35 yellow-seeded inbred lines with different characteristics have been bred, some of the lines have shorter growth period(＜230 d), light seed color(100％ yellow seed rate and 80％ yellow-seeded degree), higher oil content(about 40％), better agronomic characteristics and yield. Some of the lines have lower glucosinolate (68.66-87.96μmol/g cake), and the components of glucosinolate are much different than that of B. napus L, especially indole-glucosinolate is lower than canola(5.26-5.37μmol/g cake). The seedcoat rate of the yellow-seeded B. oleracea var acephala was 15.76％-19.79％, thicker than that of yellow-seeded B.napus.Embryo rescue and double chromosome technique were applied to obtain interspecific hybrids between B. rapa and B.oleracea var. aceaphala, the seed color in first generation of artificial synthesized B. napus was brown. there were some yellow-seeded plants found in second or third generation. The seed color in Fl between the yellow-seeded lines of artificial synthesized B. napus and other yellow-seeded lines (B. napus) was brown too, which means that the yellow-seeded genes in B. oleracea var. aceaphala were different from that of B. napus. Very strong heterosis of the yield were found in F1 between the lines of artificial synthesized B. napus and other B. napus lines.
Brassica oleracea var acephala resynthesized B. napus yellow-seeded lines intersubgenomic heterosis
LI Jiana YIN Jiaming ZHOU Qingyuan LIN Na CHEN Li CHEN Shuzhong
Chongqing Rapeseed Engineering & Technology Research Center, Southwest University, Chongqing, 400716 Agronomy and Biotechnology College, Southwest University, Chongqing, 400716, China
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
941-943
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）