Heterosis of Double Low Self-incompatibility in Oilseed Rape(Brassica napus L.)

• 出 处: Agricultural Sciences in China
• 发表日期: 2002年07期
• 关键词: parent ranged breeding Carolina Wuhan crossing inbred additive environments rece

66 F1 hybrids, produced by 3 double low self-incompatible lines and 22 varieties with a North Carolina II (NCII) crossing design, were tested for their heterosis in Wuhan, China during two growing seasons from 1999 - 2001. The results showed that significant differences were found between FjS and their parents for yield per plant and seed oil content. Mid-parent heterosis of these two characters ranged from 5.50% -64.11% and from 1.55% -7.44% respectively. Heterosis for seed yield per plant was greater than that of seed oil content. For yield components, heterosis of total number of siliques per plant was the highest, fol-

66 F1 hybrids, produced by 3 double low self-incompatible lines and 22 varieties with a North Carolina II (NCII) crossing design, were tested for their heterosis in Wuhan, China during two growing seasons from 1999 - 2001. The results showed that significant differences were found between FjS and their parents for yield per plant and seed oil content. Mid-parent heterosis of these two characters ranged from 5.50% -64.11% and from 1.55% -7.44% respectively. that of seed oil content. For yield components, heterosis of total number of siliques per plant was the highest, fol-