ASSOCIATION STUDY OF ASSORTEDYIELD LINKED COMPONENTS IN WHEAT CROSSES BY INVOLVING EXOTIC GENOTYPES

Abstract

In the world, Wheat is produced in an area of about two hundred million hectares. The 80% population is growing wheat in Pakistan. The top wheat producing countries Pakistan stands in 10^th number. Biotic and abiotic factors, adverse environmental conditions and decline in cultivation area the wheat production decreasing day by day in Pakistan. For increasing the yield, there is a need to develop new wheat lines. For that motive, the present experiment was planned. F₁ generation nine cross combinations (XJ-22×XJ-24, XJ-22×XJ-25, XJ-22×XJ-23, XJ-24×XJ-22, XJ-24×XJ-23, XJ-23×XJ-22, XJ-23×XJ-25, XJ-25×XJ-22, and XJ-25 × XJ-23) were used. The F₁ hybrids compared with the local wheat varieties (Faisalabad 2008, Ujala 2016 and Johar 2016). The selected material was grown with three replications under randomized complete block design during typical sowing date in the field zone of Plant Breeding and Genetics in University of Agriculture, Faisalabad. From the genotypes, yield and yield-related traits were collected, and data was analyzed for yield and yield-contributing parameters using variance analysis and correlation. Among crosses difference was detected by analysis of variance. Study of correlation showed that positive correlation between crosses grains per spike and all yielding features such as grain yield per spike, plant height, peduncle length, spike length, spikelets per spike, thousand grain weight, and tillers per plant and yield per plant except for spike density. The superior crosses and wheat lines can be further used to develop new high yielding wheat varieties in order to obtain high wheat production.