Sajid Ali Rajput — новинки

Wheat Triticum aestivum L. is the important cereal crop and staple food of people of Pakistan. It occupies the first position in area amongst the cereal crops and covers about 65% of food crop area of the country.Cereals constitute a major part of food throughout the world and agro-based industries depend upon their production. Considerable amount of damage in caused by insect pests to stored wheat in Pakistan. The damage caused by insect pest to wheat grain has been estimated at 10 to 20%.Most favorable grain moisture range for storage insect pests is from 12 to 18 percent. It is important to control insect population size before grain is irrevocably damaged by boring, feeding and mold germination.The Khapra beetle (Trogoderma granarium), which originated in South Asia, is one of the world’s most destructive pests of grain products and seeds.It is considered one of the 100 worst invasive species in the world.Adult beetles are brownish and 2 to 3 millimetres long. Immature larvae are up to 5 millimeters long and are covered in dense, reddish-brown hair. The eggs of the khapra beetle are cylindrical with one end more rounded and the other more pointed, about 0.7 mm long and 0.25 mm.

Wheat (Triticum aestivum L.) is important cereal crop and staple food of people of Pakistan. It occupies the first position in area amongst the cereal crops and covers about 65% of food crop area in Pakistan. Red Flour Beetle, Tribolium castaneum Herbst (Coleoptera:Tenebrionidae) are cosmopolitan insects that are associated with stored grains. The red flour beetle feed only on flour and broken kernels. In addition to grain they attack dried feeds, dry fruits, pulses and prepared cereal foods such as cornflakes and numerous other stored food products. Flour beetles contaminate wheat and other cereal products by their feces and cast –off exoskeleton. The odors that they leave and discoloration of white cereal products to a dirty gray. Both the larva and the adult cause damage. Chemicals are quite harmful and very expensive and cause many human health problems. Keeping in view the importance of these problems, present studies were under taken as an attempt to find out the inherent and comparative resistance of different wheat varieties against Red flour beetles, which could be utilized in developing wheat varieties resistance against this pest in future.