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ZUBY GOHAR ANSARI*, G. RAMA RAO, V. RAJARAJESWARI, AMARAVATHI AND V. UMAMAHESH
Department of Crop Physiology, Jawaharlal Nehru Agricultural University, Jabalpur, M.P.
Field experiment was conducted during kharif, 2015-16 at Dry land farm, on sandy loam soils of Sri Venkateswara Agricultural College, Tirupati situated in Southern Agro-Climatic Zone of Andhra Pradesh. Ten guar genotypes were evaluated for seed quality parameters. The results revealed that among the quality attributes total carbohydrates, seed protein and total free amino acids contents varied significantly and no single genotypes showed superiority on these attributes. Gum viscosity and gum content of guar seed are important in terms of economic value. Genotypes RGC-936, RGC-936-1, GA2G-0503, RGC-1003 and RGG-12-3 recorded superior gum viscosity (> 4000 milli pascals per second) and GAUG-4703-1 and GA2G-0503 recorded higher gum content (> 30%), whereas RGG-13-4 and GAUG-841 are having poor gum content of less than 25 per cent. Gum viscosity recorded a weak negative correlation (R2 = -0.1144) with seed yield. Based on seed yield and its quality, RGG-12-3 is superior in this southern climatic zone followed by RGC-936-1, GAUG-4703-1 and GA2G-0503. RGG-13-4 recorded higher seed yield, but posses poor quality in terms of guar content and its viscosity.
Guar, Genotypes, Seed quality, Gum viscosity