Effect of biochemicals on the incidence of pigenpea pod borers
2002
Sahoo, B.K. | Patnaik, H.P., College of Agriculture, Bhubaneshwar (India). Department of Entomology
Effect of biochemicals on the incidence of pigeonpea pod borers was studied in the field andlaboratory of Department of Entomology, Orissa University of Agriculture and Technology, Bhubaneswar during three cropping seasons of kharif 1994-97. Biochemical basis of resistance indicated that low amino acid, protein and sugar contents and high phenol contents induced resistance in the pi8geonpea varieties against borers. The amino acid and protein content have been estimated as 1.40 - 1.52 mg/g and 6.5 - 8.9 in pod coats of resistant varieties (H 89-2, ICPL 83024, AS 46, T 21, AS 36), respectively. The seeds of these varieties contained 1.39 - 1.55 mg/g amino acid and 16.1 - 18.2 protein. Low sugar (2.91 - 3.44 in pod coats and 2.86 - 3.51 in seeds) and high phenol (6.33 - 8.97 mg/g in pod coats and 7.64 - 9.49 mg in seeds) have been observed in resistant varieties. While high sugar (3.66 - 4.92 in pod coats and (3.64 - 4.82 in seeds) and low phenol (5.96 - 6.30 mg/g in pod coats: 5.86 - 6.60 mg/g in seeds) was recorded in susceptible pigeon-pea varieties.
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