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Biochemical Analysis in Cotton (Gossypium Hirsutum L.) Genotypes Resistant and Susceptible to Sucking Pest Attack

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Pages:64-67
Anamika, Jayanti Tokas, Anju, H.R.Singal and Ruby Siwach Sangwan (Department of Biochemistry, College of Basic Sciences and Humanities, CCS Haryana Agricultural University, Hisar, Haryana)

Cotton, popularly known as “the white gold”, is an important commercial fiber and raw material for textile industry which is supposed to be number one enterprise in the country. Even though India ranks first with respect to area under cultivation, it stands second in total production after China. Of the several factors contributing for the low yield of cotton, biotic constraints appear to be very important of which the ravages caused by insect pest assume greater importance. In the present study various biochemical parameters (total phenols, total soluble sugars, reducing sugars & non-reducing sugars) were estimated in the leaves of cotton genotypes as infected by sucking pests. The total phenols ranged from 1.58 g/100g (HD432 & HD 503) to 3.89 g/100g (H1098). The range for total soluble sugars, reducing sugars and non- reducing sugars was from 2.3 g/100g (H 1454) to 4.95 g/100g (H1098), .76 g/100g (H 1462) to 1.97 g/100g (H 1464) and 1.33 g/100g (H1463) to 3.61 g/100g (H 1098) respectively. It was observed that after pest infection total phenols and increased whereas the total soluble sugars, reducing and non-reducing sugars decreased.

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Pages:64-67
Anamika, Jayanti Tokas, Anju, H.R.Singal and Ruby Siwach Sangwan (Department of Biochemistry, College of Basic Sciences and Humanities, CCS Haryana Agricultural University, Hisar, Haryana)