Differentiation reсombinant line of the sweet corn on parameter of the combinational ability

Abstract

Materials and methods. The brought results of the study to combinational ability on productivities cob 30 recombinant sweet line got as a result combinational-tranсrationale to breeding between sample of the sweet corn and carrier specific gene biosynthesis carbohydrate in endosperm grain. The Evaluated lines are differentiated on parameter effect to general combinational ability (OKS), constants and variance specific (SKS) when undertaking the studies in contrasting condition growing (2012-2013 gg.) north Steppe Ukraine.

Results. They Are Chosen valuable in genetic attitude of the lines РКЦ18, РКЦ35, РКЦ98, РКЦ83, РКЦ83-2, which are characterized high and stable estimation effect OKS and variance SKS, as well as lines РКЦ17, РКЦ34, РКЦ310, РКЦ49 with high general combinational ability and average and volatile specific.

The Level of the manifestation of the specific particularities of the shaping to productivities under combining line with different combinational ability condition, as a rule, genotype best on this factor line, which capable reorientation system to genetic organization of the rule-oriented process of the most worst component of the crossbreeding both when making new line, and at syntheses hybrid. The Best results are herewith received when use the forms with high parameter of the combinational ability.

The chosen high productive to hybrid combinations of the sweet corn vastly exceed average populate importance as well as level of the standard - an average early (FAO 250) of the hybrid Konkurent (13,28 and 12,42 t/ga) on productivities cob on 2,62-6,46 and on
1,42-4,90 t/ga in 2012 and 2013. The High level heterosis beside them provided combining line with high genetic value with tester both with high, and average and low combinational ability. In genotype F1 these hybrid has occurred the co-ordination and genome maternal and father component of the crossbreeding and their harmonizationгармонизация that has conditioned the accumulation in hybrid organism favorable acting on sign alleles, which with high expression check the manifestation positive heterosis. They have a prospect of the use in facilities of the different property categories for production high valuable vegetable product.