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P-ISSN: 2349-8528, E-ISSN: 2321-4902   |   Impact Factor: GIF: 0.565 NAAS Rating: 5.31 NEW

International Journal of Chemical Studies

Vol. 5, Issue 5 (2017)
Influence of morphological factors on the incidence of Maruca vitrata (Geyer) on short duration pigeon pea Cajanus cajan (L.) Millsp


Author(s): Sangeeta Tiwari, Surinder Yadav and Anasar Nadaf

Abstract: Six plant parameters, viz. Days to 50 per cent flowering, pod wall thickness, pod length, number of grains per pod, days to maturity, trichome density of pod at immature, half mature and fully mature stages were studied in relation to the expression of varietal reaction towards, Maruca vitrata in twenty genotypes of short duration pigeonpea. It was observed that pod length (mm) showed positive and significant correlation with Maruca webbing (0.4619), larval population (0.4680) and pod damage (0.7710). Highly susceptible genotype Paras possessed maximum pod length 55.86 mm as compared to most tolerant genotype AH10-17 possessed minimum pod length 36.22 mm. The trichomes density showed negative correlation Maruca webbing, larval population and pod damage. It was observed that highly susceptible genotype Paras has least number of trichomes at immature stage of pod possessed A type (47.73/ mm2), B type (1.00/ mm2), C type (6.21/ mm2),half mature pod possessed A type (70.83/ mm2), B type (1.00/ mm2), C type (1.87 / mm2) and full mature pod possessed A type (56.27/ mm2), B type (0.01/ mm2), C type (0.00 / mm2) as compared to tolerant genotype AH10-17 with maximum trichomes density at immature stage of pod possessed A type (161.07/ mm2), B type (8.33/ mm2), C type (13.69/ mm2),half mature pod possessed A type (146.30/ mm2), B type (6.88/ mm2), C type (6.47 / mm2) and full mature pod possessed A type (121.07/ mm2), B type (0.11/ mm2), C type (0.009/ mm2).

Pages: 190-193  |  602 Views  9 Downloads

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How to cite this article:
Sangeeta Tiwari, Surinder Yadav, Anasar Nadaf. Influence of morphological factors on the incidence of Maruca vitrata (Geyer) on short duration pigeon pea Cajanus cajan (L.) Millsp. Int J Chem Stud 2017;5(5):190-193.
International Journal of Chemical Studies