Study of chickpea seed size heredity (Cicer arietinum L.)

R.Sturzu*, T.Nistor, F.Bodescu, C.Melucă

Abstract. The hybridological study of five chickpea parental genotypes and their direct hydrids in F1 generation elucidated some aspects regarding the genetic control of seed size. The experimental results showed that into genetic control of the seed size, both additivity (gi) and dominance (l, li, lij) effects of genes, involved into heredity of this genetically quantitative trait, have been involved. They acted asa “partial dominance” genetic mechanism (H /D)1/2 = 0.82 and 1 Vr/Wr = 0.87 confirmed by the result of graphical analysis, too. The frequency of dominance genes was in excess vs. that of recessive ones. The dominant and recessive genes as well as the dominant and recessive alleles (H /4H 0.21) were symmetrically distributed among parents. The set of tested genitors can 2 1 = emphasize the presence of a gene or a dominant gene group of them closely associated, which obviously influence the tested trait (h2/H = 0.87). The heredity 2 coefficients for the tested trait had values of 0.72 in narrow and 0.99 in large one.