This work was supported by the State"973" Program (Grant No. G2000016210); the International Foundation for Science (Grant No. C-2366/F); and the Program of Chinese Academy of Sciences (Grant No. KSCX2-1-02).
The potential ecological risks of Bacillus thurigiensis (Bt) insecticides and Bt-crops have caused increasing concern since their commercial release in the field, among which pests’ resistance to Bt-crops is the majo...
the National Natural Science Foundation of China (Grant No. 39670492) and the Chinese Academy of Sciences (Grant No. KSCX2-1-02).
Reciprocal hybridization between Helicoverpa armigera (Hubner) and H. assulta Guenee followed by back-crossing of the hybrids (F1) with H. armigera produced backcross (BC) lines consisting of fertile females and males...
There are currently three kinds of transgenic Bt insect-resistant cotton germplasm lines, Shanxi 94-24, Zhongxin 94 and R19, in China. They showed high resistance to the neonate larvae of bollworm (Helicoverpa armiger...
There are 3 kinds of transgenic Bt strains, Shanxi 94-24, Zhongxin 94, and R19, in upland cotton in China. Their transgenic Bt insect-resistance cultivars or hybrids have been developed and grown by farmers. Genetic s...
The resistance ratio of Helicoverpa armigera to Cry1Ac insecticidal protein from Bacillus thuringiensis (Bt) is 13.1- and 3.02-fold after 18 generations of selection by transgenic tobacco expressing Bt or two (Bt and ...
Diapause hormone (DH) is a neurohormone which is secreted from suboesophageal ganglion and responsible for induction of embryonic diapause in many insects. Using rapid amplification of the cDNA ends (RACE) method, the...
In the early 1970s, Riddiford and Williams found that removal of pupal corpora cardiaca prevented calling behaviour in the silkmoth Antheraea polyphemus and Hyalophora cecropia. However, the reinvestigation by Sasaki ...
In recent years the study of the infection and replication of insect viruses in tissue cultures has made much progress. This paper describes a method for the cultivation of larval hemocytes of cotton bollworms, Heliot...