西藏栽培油菜种质资源抗蚜性初步鉴定

Preliminary Identification of Anti-aphid Rape Germplasm Resourcesin Tibet

对西藏地区554份油菜种质资源材料进行了抗蚜性初步鉴定。结果表明,51份材料表现免疫,占9.20%;243份材料表现为高抗,占43.86%;85份材料表现为中抗,占15.34%;53份材料表现为低抗,占9.57%;122份材料表现为感虫,占22.02%。由此可知,554份种质资源主要以免疫和高抗为主,共占53.05%。其中芥菜型油菜感虫率最高,白菜型次之。甘蓝型油菜免疫性最强。日喀则地区的油菜抗蚜性明显高于山南和其它地区。

The preliminary identification of anti-aphid of 554 rape samples from different regions of Tiet was carried out. The results showed that of 554 samples, 51 materials performed immune, accounting for 9.20% ; 243 performed high resistance, accounting for 43.86 % ; 85 performed middle resistance, accounting for 15.34 % ; 53 performed low resistance, accounting for 9.57% ; 122 performed susceptible, accounting for 22.02%. Therefore, 554 germplasm resources mainly performed immune and high resistance, accounting for 53.05% t. Brassica junceahad the highest susceptible rate, followed by Brassica campestris. Brassica napus had the highest immunity. The anti-aphid of the rapes from Xigaze region was significantly higher than those of Shannan region and other regions.