【摘要】 1978～1979年在广州郊区进行水稻抗稻瘿蚊品种筛选鉴定,经多次重复鉴定,国外引进的品种中,无标葱的有W₁₂₆₃、R_7-2757、R_35-2750、RD₉、BKNBR_1030-76-2、ARC₆₆₅₀等13个;标葱率1～5%的有R_35-2739、IET₆₀₁₃、BG_404-1等12个;标葱率在15%以下的有CR_180-4等12个。初步鉴定本国品种资源,无标葱的有鸡咀占,标葱率在5%以下的有大科占、晚金风6号等17个。鉴定方法先行苗期初筛和复筛,将标葱率15%以下的在本田期再行重复鉴定,这样能比较准确、快速地进行筛选鉴定,以明确其抗性,找到抗源。更多还原

【Abstract】 The varieties of "International Rice Gall Midge Nursery" and local varieties were screened for the resistance to the gall midge in 1978-1979.The mass-screening procedure included the seedbox, seed bed and field tests. Initial varietal screening was conducted in seedling stage, and those varieties showing low infestation were retested in the field to confirm their resistance. Each test was performed in the cage. The gravid females were released to the plant at the rate of one insect per 20-25 seedlings, when the seedling have grown about 7-10 days after sowing （2-3 leaves age）, or about 10 days after transplanting.No gall appeared in varieties of W₁₂₆₃, R_7-2757,R_7-2758, R_7-2760, R_35-2750, R_35-2751, R_35-2752, R_35-2753, R_35-2755, BKNBR_1030-78-2, BKNBR_1030-3-3-6, RD₉, ARC₆₆₅₀.Highly resistant varieties （1-5% plants with galls） include IET₆₀₁₃, IET₆₀₁₄, R_35-7739, BG_404-1, BKN_6800-46-60, BKN_6809-74-17-1, BKNBR_1030-11-2, BKNBR_1030-51-1, BKNBR_1094-28-1, BKNBR_1030-7-5-4, BKNBR_1030-78-2.Among local varieties, no gall appeared in Gi-Chai-Zhen; sixteen varieties such as Da-Vor-Zhan, Wuan-Jin-Feng6, are highly resistant （1-15% plants with galls）.However, as plant anatomy indicated, the growing point of these varieties was already damaged by the gall midge. The varieties showing resistance may be used as resistant parents更多还原