Genetic Analysis of Transgenes in the Progenies of Bt Rice Crossed to Conventional Rice Varieties
Bt水稻杂交育种中转基因的遗传分析 Genetic Analysis of Transgenes in the Progenies of Bt Rice Crossed to Conventional Rice Varieties

Improved histochemical staining for GUS activity,PCR and Western blotting were used to detect the population of Bt rice crossed to conventional rice varieties A total of 392 plants expressing Bt toxin protein were found in 394 GUS positive plants.The result demonstrated that cry1Ab gene closely inherited and expressed with reporter gene gus.Therefore,it is possible to develop GUS assisted selection to preliminarily identify the Bt gene and study the inheritance of transgenes in (back)cross breeding.Mendelian segragation of reporter gene Gus was observed in F2,BC1 and BC1F2 progenies.Thus indicated that transgenes inherited as a single dominant gene in the progenies of Bt rice crossed to conventional rice varieties.