Breeding for stem borer in rice
Journal Title: International Journal of Farming and Allied Sciences - Year 2015, Vol 4, Issue 6
Abstract
The rice stemborer,Chilo suppressalis (Walker), feeds almost exclusively in paddy fields in most regions of the world. Rice leaf folder, stem borer and brown plant hopper (BPH) are the most devastating rice insect pests. Developing and planting insect-resistant rice varieties is the most economical and effective measure for controlling these pests. Yellow stem borer (YSB) Scirpophaga incertulas(Walker) is unquestionably one of the most serious pests resulting in yield loss in all rice-growing countries. Although, biological control using Trichogramma spp. demonstrated positive results but insecticides still remains as the first and main tactic. Digestive carbohydrases contain α-amylases, glycosidases, xylanases, chitinases and pectinases but α-amylases have crucial role in digestion of dietary starch and glycogen as the initial energy sources of insects. To date, some major crop plants have been rendered insect resistant through stable ectopic expression of insecticidal δ-endotoxin protein genes of Bacillus thuringiensis (Bt). also, the mitochondrial genome is the most extensively studied genomic system in insects. Mitochondria also have functions in apoptosis and cell aging, meaning that mitochondria are implicated in many degenerative diseases of aging.
Authors and Affiliations
Mohammad Noorozi, BA-Sabertanha, MA-Zebardast, MO. Mohammadi, B. Fakheri and A. Sattari6
Keywords
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