Pakistan Journal of Biological Sciences
1028-8880
1812-5735
Asian Network for Scientific Information
10.3923/pjbs.2008.648.651
Bacillus thuringiensis)
Rice Varieties Against Stem Borer (Chilo suppressalis)]]>
Kiani
Ghaffar
Nematzadeh
Ghorban Ali
Ghareyazie
Behzad
Sattari
Majid
4
2008
11
4
Three transgenic rice varieties namely Khazar, Neda
and Nemat, all containing a cry1Ab gene, were evaluated through PCR analysis
and field examinations for their resistance at natural infestation of
insect pests during 2007. The results showed that all transgenic varieties
produced 1.2 kb PCR product derived from application of cry1Ab gene. In
field conditions, transgenic varieties exhibited high levels of resistance
against natural infestation of stem borer and the damaged plants based
on dead heart or white heat for them were less than 1%. Moreover, in stem-cut
bioassay 100% of released larvae died within four days after infestation.
These results demonstrate that expression of cry1Ab gene in the genome
of transgenic varieties provided season-long protection from the natural
infestation of lepidopteran insects.]]>
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