Heritability, phenotypic and genotypic correlations of Peanut bud necrosis virus (PBNV) reaction parameters in peanut

Yingyos Tonsomros, Sanun Jogloy, Sopone Wongkaew, Chutipong Akkaseang, Thawan Kesmala, Aran Patanothai
Plant Breeding), Researcher, 2 Ph.D.(Plant Breeding), Assoc. Prof., 4 Ph.D.(Plant Physiology   unpublished
Tonsomros, Y., Jogloy, S., Wongkaew, S., Akkaseang, C., Kesmala, T. and Patanothai, A. Heritability, phenotypic and genotypic correlation of Peanut bud necrosis virus (PBNV) reaction parameters in peanut Songklanakarin J. Sci. Technol., 2006, 28(3) : 469-477 Peanut bud necrosis disease (PBND) caused by Peanut bud necrosis virus (PBNV) is an important disease of peanut (Arachis hypogaea L.) in Thailand especially during the dry season. Host plant resistance is one of the effective methods to
more » ... tive methods to control the disease. The objectives of this study were to estimate broad sense heritability and to evaluate phenotypic and genotypic correlation between PBND score and PBND incidence in the F 4 generation of 10 crosses of peanut. A randomized complete block design with 4 replications was used for testing the mentioned F 3 families in F 4 generation at two locations in Kalasin province in the Northeast of Thailand. Characters under study were PBND score and PBND incidence (percent infected plants) evaluated at 30, 40, 50, 60, 70, and 90 days after sowing (DAS). The 50 and 60 day data are reported herein. There were significant differences among crosses for PBND score and PBND incidence. Means for PBND score and PBND incidence of resistant x susceptible group were intermediate between resistant x resistant group and ORIGINAL ARTICLE 1,5 M.