Combining ability analysis for peanut bud necrosis virus (PBNV) resistance and agronomic traits of peanuts
2003
Kesmala, T.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Agronomy) | Jogloy, S.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Agronomy) | Wongkaew, S.(Suranaree University of Technology, Nakhon Ratchasima (Thailand). Institute of Agricultural Technology. School of Crop Production Technology) | Akkasaeng, C.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Agronomy) | Vorasoot, N.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Agronomy) | Patanothai, A.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Agronomy)
Four male parents of peanut selected for resistance to peanut bud necrosis virus (PBNV) and four female parents selected for large seed size and high yield were crossed in a factorial (M*N) mating scheme. F2 population derived from the crosses were evaluated for general combining ability (GCA) and specific combining ability (SCA) for PBNV resistance parameters and agronomic traits. The significant GCA effects were observed for disease incidence, area under disease progress curve (AUDPC) and disease score reflected the importance of additive gene actions in this population. Lack of significant SCA effects revealed the absence of non-additive gene actions for PBNV resistance. Selection for PBNV resistance traits in early generations should be possible. IC 10 and IC 34 giving consistently high negative GCA effects, were identified as potential sources of PBNV resistance. GCA effects for most agronomic traits were also significant. However, SCA effects were significant only for pod number per plant, pod weight per plant and seed weight per plant. The results of GCA showed that Luhua 11 and ICGV 86388 gave the highest positive effects for pod number per plant, pod weight and seed weight per plant Luhua 11 and ICGV 86031 were the best combiners for weight of 100 seeds and IC 10 was the best general combiner for seed number per plant and shelling percentage. The cross KKU 72-2 * ICGV 86031 showed highest SCA effects for pod number per plant, pod weight per plant and seed weight per plant.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Kasetsart University