Differential Aphid Colony Establishment in Dolichos lablab Varieties Correlated with Some Plant Specific Factors That Impact on Aphid FecundityReport as inadecuate




Differential Aphid Colony Establishment in Dolichos lablab Varieties Correlated with Some Plant Specific Factors That Impact on Aphid Fecundity - Download this document for free, or read online. Document in PDF available to download.

Aphid establishes colony in theselective plant parts like vine, leaf petiole, leaflet, inflorescence, andtender fruit in Dolichos lablab Linnbut not the entire plant. In this study, the aphid colony establishment in vineis focused to understand the differential resistance response between twovarieties. At the early stage of aphid infestation, the aphid colonyestablishment was significantly different between two genotypes p value =0.00 and abbreviated as -resistant- variety that supported lower aphidproliferation mean value = 48.2 ± 2.2 and -susceptible- variety thatsupported comparatively higher aphid proliferation mean value = 215.5 ± 16.9.The total aphid number was significantly different between the two varieties,realized at the early infestation stage when both -antixenosis- and -antibiosis-defense mechanisms were working on. Some plant specific factors like vinediameter, wet- dry weight ratio of vine, phloem sap pressure, the compactnessof the vine, wet-dry weight ratio of leaflet, length of leaf petiole, diameterof leaflet vein were identified as modulating factors. The impact of resistantvariety on aphid was also investigated for better understanding of aphiddefense mechanism.

KEYWORDS

Dolichos lablab, Aphid Colony, Differential Vine Diameter, Differential Wet-Dry Weight Ratio of Vine, Differential Phloem Pressure, Differential Compactness of the Vine, Differential Aphid Fecundity, Differential Water Content in Aphid

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Ali Mondal, H. , Roy, S. , Hijam, L. , Chakraborty, M. , Dutta, P. and Hath, T. 2017 Differential Aphid Colony Establishment in Dolichos lablab Varieties Correlated with Some Plant Specific Factors That Impact on Aphid Fecundity. American Journal of Plant Sciences, 8, 754-769. doi: 10.4236-ajps.2017.84053.





Author: Hossain Ali Mondal1*, Suvendu Kumar Roy1, Lakshmi Hijam1, Moumita Chakraborty1, Puspendu Dutta2, Tapan Kumar Hath3

Source: http://www.scirp.org/



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