Studies of Mosaic Virus Disease on the Growth and Yield in Pigeon pea Crop

Asian Resonance(P: ISSN No. 0976-8602 RNI No.UPENG/2012/42622 VOL.-V, ISSUE-III, July-2016 E: ISSN No. 2349-9443)

Abstract

 Anjali Dutt 

Assistant Professor, Deptt.of Botany, Meerut College, Meerut

       Pigeon pea (Fabaceae) botanical name Cajanus cajan Linn. Commonly known as red gram or Arhar dal is an old Indian crop and main source of protein in the Indian food diet .In the present investigation various parameters of the pigeon pea related to growth and yield of the healthy as well as the mosaic virus infected plants were studied.The infected plants were light greenish in colour as compare to healthy plants, which are dark green in colour.The height and size of the stem and the leaves were also reduced in diseased plant.The anatomical studies of leaf-revealed that the size and the shape of the parenchymatous, palisade tissues and spongy cells were also reduced.The flowering was delayed, number and shape and size of the fruits and seeds were also reduced in mosaic infected plants. It is a leguminous crop is rich in proteins than other plants of Fabaceace family .In our present investigation some histological changes observed in diseased leaves that there were reduction in thickness of leaves ,in number of chloroplasts and in size of stomata .The number of stomata were increased in the diseased leaves .In viral infected plants the thickness of leaflet was also reduced. The assimilatory tissues of diseased leaves was reduced in size .Reduction in the percentage of chlorophyll is very high .Carotene and xanthophylls content also decreased, translocation of sugar was reduced there is also reduction of sucrose synthesis as comparison to normal healthy plants.

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