ibclogo XVI International Botanical Congess


Abstract Number: 5252
Poster No. = 2133


EFFECT OF CUCUMBER MOSAIC VIRUS ON CHLOROPHYLL CONTENT AND MINERAL ELEMENTS IN CHILLI (CAPSICUM ANNUUM L.)


M. S. Sandha, K. S. Sandhu, J. S. Hundal, Department of Vegetable Crops, Punjab Agricultural University, Ludhiana, India


The studies on the effect of CMV on chlorophyll content and mineral elements were carried out in two resistant ant two susceptible chilli varieties. The resistant genotypes, in general, recorded higher clorophyll contents, phosphorus and magnessium and lower zinc and manganese than susceptible genotypes. Virus infection showed significant reduction in total chlorophyll, chlorophyll a" and b" contents and Zn and increase in P, K, Ca, Mg, Cu and Fe in susceptible genotypes as compared to the resistant ones. The Mg which constitutes about 2.7% of the chlorophyll molecule, was found relatively higher in resistant varieties but it showed very little increase after infection. This element, hence seems to be playing a greater role in imparting resistance to CMV in chillies. It was observed that the higher the reduction in chlorophyll, more the disease severity.


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