Selection of parents for hybridization in wheat (Triticum aestivum L.)

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Research Paper 01/09/2015
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Selection of parents for hybridization in wheat (Triticum aestivum L.)

Kabir, M. Hasanuzzaman, MK. Rabby, MR. Haque, MW. Rahman
Int. J. Agron. Agri. Res.7( 3), 76-84, September 2015.
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This experiment was carried out during Rabi 2013-14 at the research field and laboratory of the department of Genetics and Plant Breeding, HSTU, Dinajpur with 24 wheat genotypes to study the heritability, genetic advance, divergence and to select parents for hybridization program. Twenty four genotypes were evaluated in Randomized Completely Blocked Design (RCBD). The study revealed a wide range of genetic advance and high broad sense heritability for most of the traits. Genetic advance in percent of mean suggested that there is yet scope for further improvement of genotypes for the characters studied. The grain weight of 10 spike, grains/spike and thousand grain weight had high genotypic and phenotypic co- efficient of variation. So selection for these three characters will be highly effective and efficient for improvement. Twenty four genotypes were grouped into five different clusters. The inter cluster distances was the highest between cluster I and cluster II (10.24) and the lowest between cluster V and cluster III (7.29). The result revealed that genotypes located in cluster I and II were far diverse than the genotypes located in cluster V and cluster III. So hybridization with the genotypes of cluster I will be more effective with the genotypes located in cluster II and V. Considering diversity pattern, cluster distance ,cluster mean and other agronomic traits the genotypes E-11,E-21, E-24 of cluster I, E-2 , E-6, E-20 of cluster II, E-19 of cluster IV and E-10, E-15, E-16, E-17 of cluster V may be used as parents for fruitful improvement of yield and yield contributing characters in wheat.


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