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ASSESSMENT OF
HERITABILITY ESTIMATES FOR SOME YIELD TRAITS IN WINTER WHEAT (TRITICUM
AESTIVUM L.)
MUHAMMAD KHALID1,
IFTIKHAR HUSSAIN KHALIL2, FARHATULLAH2*, ABDUL
BARI1, MOHAMMAD TAHIR1, SHAHID ALI1
SAJJAD ANWAR1, AMJAD ALI1 AND MUHAMMAD ISMAIL1
Abstract:
Information
about the genetic variability and other associated parameters for
different traits is very useful in crop improvement programs. Yield
components and some morphological characters were studied in an
experiment comprising 42 winter wheat genotypes. The experiment was laid
out in RCB design in 2004-05 at the New Development Farm of Khyber
Pakhtunkhwa Agricultural University Peshawar. Mean values, genotypic and
phenotypic variances, broad sense heritability and genetic advance were
calculated for all the traits. Moderate to very low and high
heritabilities were estimated for all the morphological characters
except days to 50% physiological maturity. Grain yield exhibited highest
heritability value of 92.45% while harvest index and days to 50%
physiological maturity showed minimum values 27.55% and 15.42%
respectively. High heritability estimates were observed for grain yield
and biological yield. Genetically the data revealed highly significant
mean squares for all the characters i.e., tiller plant-1,
plant height, days to 50% physiological maturity, grain weight, grain
yield, biological yield and harvest index which suggested the presence
of genetic difference among the winter wheat genotypes.
1Sugar
Crops Research Institute, Mardan-Pakistan,
2KPK
Agricultural University, Peshawar-Pakistan
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