Genotype-by-environment TGX 1904-6F, TGX 1935-3F, TGX 1440-1E and TGX 1984-22F falling into them. TGX 1448-2E and TGX 1895 appeared to be overall best genotypes combining high stability and yield though they did not fall into mega-environment could be recommended for use in breeding programmes.
A multi-location field trial was conducted at two location to estimate genotype by environment interaction for growth, yield and yield characters in nine accession lines of common bean Phaseolus vulgaris L. A randomised complete block design with three replication was use for the field trials. A highly significant differences among the tested genotypes in the two environments were detected for Leaf count, Days after Sowing to first flowering, Days after Sowing to 50% flowering, Plant height at 50% flowering, Pod count per plant, Pod length per plant, Seed diameter per pod, Seed count per pod, Pod yield per plot, Seed yield per plot and Dry matter weight among the testes accessions. The genotype and environment interaction exhibited significance for some characters suggests that genotypes interacted considerably with the environments in the expression of characters, and will behave differently under different environment. A wide mean range of variation was detected which reflects the extent of phenotypic variability in respect of the characters and a good scope for selection of suitable basic material for plant breeders for further crop improvement. Further multi-location trial for seasons should be carried out for the proper selection of the desired genotype.
The study was conducted at the Teaching and Research Farms, Federal University of Agriculture, Makurdi, Nigeria. Five Cowpea genotypes (FUAMPEA-1, IT99K-573-1-1, SAMPEA-16, SAMPEA-8, BIU LOCAL) were crossed and advanced to F1, F2, BC1 and BC2 populations using bi-parental mating design. The six generations were evaluated in a Randomized Complete Block Design with three replications. Significant test of the mean performances among the entries showed significant differences among the generations for the characters studied. Wide ranges of narrow sense heritability (18 to 79%), broad sense heritability (21 to 92%) and genetic advance (5.7 to 24.1%) were obtained for characters studied. Broad and narrow sense heritability as well as genetic advance was moderate to high for most of the characters studied such as days to 50% flowering, plant height, days to pod maturity, number of seeds per pod, number of pods per plant, hundred seed weight, root length and grain yield for the three sets of cowpea crosses. The results also revealed the possibility of exploitation for grain yield and drought tolerance in the crosses studied.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.