Plant Biotechnology
Online ISSN : 1347-6114
Print ISSN : 1342-4580
ISSN-L : 1342-4580
Original Paper
Transgenic IR72 with Fused Bt Gene cry1Ab/cry1Ac from Bacillus thuringiensis is Resistant Against Four Lepidopteran Species Under Field Conditions
Gong-yin YEJumin TUCui HUK. DATTAS. K. DATTA
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JOURNAL FREE ACCESS

2001 Volume 18 Issue 2 Pages 125-133

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Abstract

Two transgenic IR72 lines, TT9-3 and TT9-4, carrying a fused Bt gene cry1Ab/cry1Ac from Bacillus thuringiensis Berliner were field tested to evaluate their multiple resistance against four lepidoptera and their agronomic performance in Hangzhou, China, in 1999. The results demonstrated that both transgenic lines were highly resistant against natural infestation and artificial infestation of four lepidopteran species: striped stem borer (Chilo suppressalis), pink stem borer (Sesamia inferens), leaffolder (Cnaphalocrocis medinalis), and green semilooper (Naranga anescens). In contrast, the non-transformed IR72 control showed serious damage symptoms of deadhearts, whiteheads, folded leaves or leaf notches. Field performance data showed that Bt transgenic lines may provide excellent opportunity for Bt rice deployment for commercial scale in Asia.

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© 2001 by Japanese Society for Plant Biotechnology
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