TITLE:
Correlation and Regression Analysis for Yield Traits in Wheat (Triticum aestivum L.) Genotypes
AUTHORS:
Athar Hussain Bhutto, Asghar Ali Rajpar, Shahmir Ali Kalhoro, Amjad Ali, Fahad Ali Kalhoro, Muneer Ahmed, Sajjad Raza, Niaz Ahmed Kalhoro
KEYWORDS:
Wheat, Grain, Yield, Genotype, Analysis
JOURNAL NAME:
Natural Science,
Vol.8 No.3,
March
9,
2016
ABSTRACT: The
present research work was carried out at Southern Wheat Research Station,
Tandojam during the growing season 2013-14 in order to work out correlation and
regression analysis for yield traits in wheat genotypes. The experiment was
laid out in a Randomized Complete Block Design with three replications. Eight
bread wheat genotypes such as Mehran, Sarsabz, TJ-83, SKD-1, Inqlab, A. Sattar, Sehar and Sassui were used to
examine correlation and regression. Seven traits, viz.; plant
height, tillers plant-1, spike length, spikelet’s spike-1,
grains spike-1, seed index and grain yield plant-1 were
studied. The analysis of variance revealed significant differences among the
genotypes for plant height, tillers plant-1, spike length,
spikelet’s spike-1, grains spike-1, seed index and grain
yield plant-1. Based on mean performance, variety Sarsabz gave
maximum plant height (95.46), produced maximum tillers plant-1 (4.40), gave more grain spike-1 (63.13), TJ-83 gave highest seed
index (47.260), and was next ranker in spike length-1 (12.07),
spikelet’s spike-1 (19.13), grains spike-1 (59.86), and
grain yield plant-1 (9.86) among the genotypes. The phenotypic
correlations revealed that tillers plant-1 and grains spike-1 were highly positively associated; hence these yield components can be used as
reliable selection criteria to improve grain yield in wheat. Thus estimation of
correlation and regression analysis among yield and yield components may
provide effective selection criteria to improve wheat grain yield. The results
from correlation and regression of plant height indicated significantly positive
association with spikelet’s spike-1, tillers plant-1 and
grains spike-1 which revealed that increase in plant height will
cause corresponding increase in associated traits.