-
()
-


@Mail.ru .
[ ]

^: *http://esa.publisher.ingentaconnect.com/content/esa
^: Zheng Xusong; Yang Yajun; Xu Hongxing; Chen Hao ; Wang Baoju; Lin Yongjun; Lu Zhongxian
^: Resistance Performances of Transgenic Bt Rice Lines T2A-1 and T1c-19 Against Cnaphalocrocis medinalis (Lepidoptera: Pyralidae) [ Cnaphalocrocis medinalis T2A-1 T1c-19, Bacillus thuringiensis Cry2A* Cry1C*]
^: Journal of Economic Entomology, 2011; Vol.104,N 5. - P. 1730-1735
^: 2011
+

^: The transgenic Bacillus thuringiensis (Bt) rice, Oryza sativa L., lines T2A-1 and T1c-19 expressing Cry2A* and Cry1C* from Minhui 63' (MH63) were evaluated for resistance to newly hatched and third-instar larvae of Cnaphalocrocis medinalis (Lepidoptera: Pyralidae), by using detached leaf laboratory bioassays. Both T2A-1 and T1c-19 rice showed high C. medinalis resistance; however, the lethal time (LT)50 of larvae fed with T2A-1 rice was significantly longer than that of larvae fed with T1c-19 rice, implying T1c-19 rice was more toxic to C. medinalis larvae. Larval mortality after 4 d on nitrogen-free MH63 was 25.5% compared with 2.4% mortality on high nitrogen fertilizer (250 kg N/ha) plants. Larval mortality on high nitrogen T2A-1 plants declined by 20% compared with nitrogen-free plants. However, resistance in T1c-19 plants was unaffected by nitrogen fertilizer. C. medinalis moths preferred MH63 at both the seedling and grain milk stages for oviposition but not the T1c-19 and T2A-1 Bt rice lines. aref1

^TRN: 1395431
^:
^:
+



        

1998-2017 ©