Principal component analysis of yield characteristics of wheat (Triticum aestivum L. emend Fiori & Paol) in intermediate zone of Jammu and Kashmir

Abstract

The present study was carried out to study the variation among various yield characteristics of Wheat (Triticum aestivum L. emend Fiori & Paol) during Rabi 2013-14 and 2014-15. Nine yield characteristics viz Plant height, No. of effective tillers, No. of leaves/ plant, No. of grains/ ear, No. of grains/ plant, Grains yield quintal/ hectare, Straw yield quintal/ hectare, Biological Yield quintal/hectare and Harvest Index were studied from a wheat trail conducted at Regional Agricultural Research Station Rajouri, SKUAST-Jammu. The PCA analysis was used for depicting the proportion of variance among yield characteristics. PCA results revealed that first two components explain almost 92 % of the variation among yield characteristics, with highest proportion of contribution by Grains yield quintal/hectare attribute among nine attributes followed by No. of grains/ plant.