Inheritance of Some Quantitative Traits in Common Bean Cross (BAT 477 X Dobroudjanski Ran)

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Inheritance of Some Quantitative Traits in Common Bean Cross (BAT 477 X Dobroudjanski Ran)

Studies were conducted in the period 2011 - 2014. Biometric analysis of the quantitative traits was performed on 50 plants from parents, F1 and F2-generation of the cross BAT 477 X Dobroudjanski ran. Inheritance in a wide (H2) and narrow sense (h2) was established by Mahmud and Kramer (1951) and Warner (1952). The number of effective genes (nE), controling traits was determined by Wright (1968). Overdominant inheritance in the F-generation was found for the traits: height of the first pod placement, height of the plants and number of branches. Incomplete dominance occurs in the inheritance of traits - mass of plants with pods, number of pods per plant, number of fruit branches, mass of pods with seeds, number of seeds, seed weight and length of pods. The most strong heterosis effect was manifested in the traits - number of branches, plant height, length of the pods, number of pods per plant and a thickness of the seeds. The highest values for criteria H2 and h2 in F1 and F-generations were established for the traits - seed weight, number of pods and number of seeds per plant, thickness and length of the seeds. A higher value of H2 and h2 in F-generation also has the trait mass of the pods with seeds, while in F2-generation - number of fruit branches and height of the first pod placement. Highest number of effective genes were reported in the control of traits: number of pods (4-5 genes); number of fruit branches and mass of the pods with seeds (2 - 3 genes), as well as the thickness of seeds (3-4 genes)

Keywords:

common bean, inheritance, Phaseolus vulgaris L. quantitative traits,

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