HETEROZIS AND GENE EFFECTS IN THE INHERITING OF QUANTITY PARAMETERS OF THE KNEZHA 435 MEDIUMEARLY CORN HYBRID. III. GRAIN LENGTH, GRAIN NUMBER IN THE COB ROW GRAIN PERSENTAGE IN THE COB

摘要

The paper presents the results of study manifestations of heterosis in F, hybrid generation, depression in the F2 hybrid generation, levels of dominance in F, and F2, and the relative contribution of different genetic effects - additives, dominants and epistatics in the inheritance of quantitative signs grain length, grain number in the cob row and grain percentage in the cob at medium early corn hybrid Knezha 435 As a result, research has found that the inheritance of the traits grain length and grain number in the cob row on hybrid corn Knezha 435 observed well pronounced manifestation of heterosis in F,, accompanied by signs of depression in F_2.True heterosis in F, reaching 19.0% and 16.3% in the two attributes.Both traits is inherited in a positive over dominant, relatively largest share of dominant gene effects that lead to amplification of the trait and the proportion of additive genetic effects is low. Regarding the attribute grain percentage in the cob with hybrid corn Knezha 435, it is not calculated real heterosis in Inheritance of the trait have not predominate gene effects action.