Keywords : Degree of dominance


ESTIMATING SOME GENETIC PARAMETERS AND GENETIC DIVERSITY BY USING CLUSTER ANALYSIS FOR SOME TRAITS IN FABA BEAN (VICIA FABA L.)

M. R. Azzam; M. O. Al-Obaidi

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2018, Volume 16, Issue 2, Pages 1063-1078
DOI: 10.32649/aagrs.2022.170564

Sex genotypes of pea crops (Iraq, Spanish, Dutch, Turkish, Italian and American) obtained from the General Authority for Agricultural Research , introduced in half diallel crosses. Planting parents in two dates 2016 for the purpose of hybridization, parents and hybrids (experience comparative) in 20/10/2017were planted in one of the farmers' fields in Ramadi local–Anbar province, at latitude 33.28? and longitude 43.33?. The right or near of the Alfurat River using the Randomized Complete Block Design (RCBD) with three replications and recorded data for traits yield and some other traits of the season 2017-2018. The results showed the presence of high significant differences between parents and their hybrids of the first generation and all traits. And that the general combining ability to specific combining ability were lower than one for traits number of leaves per plant, chlorophyll content and dry weight plant. While more than one for other traits. The results also showed significant effects on the general combining ability and the direction desired in the parent Dutch for five traits (number of leaves per plant, chlorophyll content, number of bods per plant, seeds yield, dry matter for plant). Parents Spanish and Italian three traits. Parents Iraqi, Turkish and American two traits. The results also showed a significant effects of the specific combining ability in the direction desired hybrid (Iraq × Dutch) the effects of SCA significant direction desirable for seven traits. Hybrids (Iraqi ×Turkish), (Iraqi×Italian), (Spanish×Dutch), (Spanish×Turkish) and (Turkish ×Dutch) the effects of SCA significant direction desirable for five traits. Hybrids (Iraqi×American), (Spanish×Italian), (Spanish×American), (Dutch ×Turkish) and (Dutch×Italian). The effects of SCA direction desirable for three traits . Hybrid (Iraqi×Spanish) the effects of SCA for one traits. It was observed that genotypes Turkish and American have similar response pattern based on minimum Euclidean. Genotypes Iraq and Spanish was found to be better in performance and should be involved in crosses based on maximum Euclidean values that express high level of genetic diversity. This can lead to give a high heterotic response and wider segregation after hybridization. This statistical technique can be a useful tool when other molecular techniques are not available