INHERITANCE AND COMBINING ABILITY FOR FIBER LENGTH IN F1 DIALLELCOTTON CROSSES (Gossypium hirsutum L.)

Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Valentina DIMITROVA, Minka KOLEVA

The aim of this study was by means of diallel analysis of fiber length of F₁ cotton hybrids to establish some genetic parameters and inheritance indexes necessary for specifying the breeding strategy by this character and breeding value of parental forms. The hybrid populations of two diallel combinations, each involving 6 parental components, were studied. A half diallel crossing scheme was used including the parents and one set of F₁ hybrids from direct crosses. Each diallel combination was tested in replicated trials in two consecutive years. It was found that additive and non-additive gene effects participated in the genetic control of fiber length. The main component of genetic variance was of non-additive type (dominance and epistasis). The varieties Darmi, Mytra and Dorina, from the 1_st diallel combination, and Natalia, from the 2_nd diallel combination, were identified as good general combiners for this trait.

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{simplepopup popup="false" name="Citation40"}DIMITROVA V., KOLEVA M. 2023, INHERITANCE AND COMBINING ABILITY FOR FIBER LENGTH IN F1 DIALLELCOTTON CROSSES (Gossypium hirsutum L.). Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1, ISSN 2285-5785, 307-317. {/simplepopup}