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GENETIC
VARIABILITY AND CORRELATION ANALYSIS OF BREAD WHEAT (TRITICUM
AESTIVUM L.) ACCESSIONS.
MUHAMMAD MOHIBULLAH1,
MALIK ASHIQ RABBANI2, SHAH JEHAN, ZAKIULLAH1, ADNAN AMIN3
AND GHAZANFARULLAH1
Abstract:
Experimental
plot was conducted to test the variation with correlation of one hundred
bread wheat (Triticum aestivum L.) germplasms under the area of
Plant Breeding and Genetics department, Faculty of Agriculture, Gomal
University, Dera Ismail Khan, in the year 2006. All the germplasms were
evaluated for the traits, spike length (cm), number of spikelets spike-1,
grain yield plant-1(gm), 1000-grain weight (gm) and grain
yield (Kg ha-1). Genetic diversity was statistically found
for all the traits. Two germplasm [PARC/JICA 004275 (01)] had maximum
spike length (cm) i.e., 22.4 (cm). Maximum variations were observed
among the accessions for spike length (cm) with coefficient of variation
17.89%. The accession [PARC/JICA 004280 (01)] has maximum 31.8 number of
spikelets spike-1 with coefficient of variation 18.45%. The
entry [PARC/JICA 003845 (01)], [PARC/JICA 004279 (05)], [PARC/JICA
004274 (01)] and [PARC/JICA 004266 (04)] having greatest 1000-grain
weight (g) i.e. (46.2, 46.1, 45.6 and 45.1 g) having greatest 1000-grain
weight (g) with coefficient of variation 21.39%. The genotypes
[PARC/JICA 004280 (01)], [PARC/JICA 004266 (05)] and [PARC/JICA 004267
(02)] had a maximum grain yield (kg ha-1) i.e., (5185, 5061
and 5051 kg ha-1) with coefficient of variation 11.75%. The
spike length shows positive significant correlation with number of
spikelets spike-1, grain yield plant-1 and grain
yield (kg ha-1). While positive correlation was observed from
spike length and 1000-grain weight. Number of spikelets spike-1
had highly significant correlation with grain yield plant-1
and grain yield (kg ha-1). High significantly positive
correlation was depicted from grain yield plant-1 and grain
yield (kg ha-1) while, 1000-grain weight had positive highly
significant correlation with grain yield (kg ha-1).
1Faculty of Agriculture, Gomal University, D.I. Khan, Pakistan.
2IABGR, National Agricultural Research Center, Islamabad, Pakistan.
3Gomal Centre for Biotechnology and Biochemistry, Gomal University, D.I.
Khan, Pakistan.
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