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Articles by S. Wongkaew
Total Records ( 1 ) for S. Wongkaew
  R. Puttha , S. Jogloy , S. Wongkaew , J. Sanitchon , T. Kesmala and A. Patanothai
  The objectives of this study were to estimate heritability for PBNV resistance parameters and to determine phenotypic and genotypic correlations among PBNV resistance parameters and agronomic traits. One hundred and ninety two progenies in the F5 and F6 generations of peanut as well as their parents were evaluated under natural infection of PBNV in a randomized complete block design with six replications for two years. Additional experiment of the duplicated materials was also conducted for agronomic evaluation for one year using similar experimental procedures under conditions that favored optimum agronomic performance. Heritability estimates were low to relatively high for both disease incidence and disease severity, depending on crosses, ranging form 0.10 to 0.90 and 0.00 to 0.79, respectively. Phenotypic and genotypic correlation coefficients for PBND incidence and PBND severity were high, ranging from 0.94** to 0.98** and 0.99** and 1.00**, respectively. Phenotypic and genotypic correlation coefficients between PBNV resistance parameters and agronomic characters were generally low for most pairs of characters, except between PBNV resistance parameters and 100-seed weight for which it was moderate (0.42** to 0.60**) PBNV susceptibility is somewhat associated with larger seed and might hinder the progress of breeding for large-seeded peanut with resistance to PBNV.
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