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Estimation of Genetic Distance and Its Predictability of $F_1$ Hybrid Performance in Barley

Kim, Hong-Sik    (International Technology Cooperation Center, Rural Development Administration   ); Kim, Jung-Gon    (Department of Rice and Winter Cereal Crop, National Institute of Crop Science, Rural Development Administration   ); Baek, Seong-Bum    (Upland Crop Division, National Institute of Crop Science, Rural Development Administration   ); Hwang, Jong-Jin    (Upland Crop Division, National Institute of Crop Science, Rural Development Administration  );
  • 초록

    Heterotic performance of hybrids is dependent upon the amount of genetic variability among parents and combining ability of alleles at the loci associated with target traits. This study was carried out to determine if (1) pedigree-based genetic distance could explain molecular levels of genetic diversity, and (2) molecular marker-based genetic distance could predict the degree of hybrid performance in barley. The average value of Random Amplified Polymorphic DNA (RAPD)-based genetic similarity for all 58 genotypes was 0.641. Twenty-two hulless barley and eight malt barley varieties showed low levels of genetic diversity with higher similarity values than the average of all or of the hulled barley variety pool. Coefficients of parentage (COPs) computed for 1,653 pairs of 58 Korean barley varieties ranged from 0 to 0.984 with a mean of 0.048. Correlation between the genealogical and RAPD-based genetic similarity matrices was 0.256 (P


  • 주제어

    barley .   genetic distance .   hybrid performance .   RAPD .   coefficient of parentage.  

  • 참고문헌 (24)

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