Bemisia tabaci (Gennadius) elicited leaf chlorophyll loss in blackgram (Vigna mungo (L.) Hepper
DOI:
https://doi.org/10.59797/jfl.v28i1.1014Keywords:
Bemisia tabaci, Blackgram, Chlorophyll content index, Plant canopy, Whitefly-infested conditions.Abstract
The effect of feeding by whitefly, Bemisia tabaci (Gennadius) (Homoptera: Aleryrodidae) on chlorophyll loss was quantified from the leaves of nine blackgram (Vigna mungo (L.) Hepper) genotypes over a period of two seasons. The chlorophyll content indices declined significantly in all the genotypes under white fly-infested conditions, both at 30 and 50 days after sowing (DAS) particularly in the lower canopy of the plants. During both seasons, the moderately resistant genotypes (NDU 5-7 and KU 99-20) recorded lowest per cent decrease in the chlorophyll content, whereas highly susceptible genotypes (KU 7-504 and KU 7-505) recorded highest per cent decrease in the chlorophyll contents under whitefly-infested conditions.
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