Published in Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1
Written by Minka KOLEVA, Valentina DIMITROVA, Neli VALKOVA, Spasimira NEDYALKOVA
The object of this study was 59 F1 hybrid populations obtained from three schemes of line × tester crosses. The aim was to find the most promising F1 crosses for improving productivity, lint percentage and fibre length of new cotton varieties. In 2022 and 2023 the crosses and their parents were included in three trials carried out by the block method design in three replicates. The highest values of total GCA effects of the two parents for each trait were taken as “ideal” and the Euclidean distances between them and the GCA effects of both parents were calculated for each F1 cross. The crosses with the shortest Euclidean distances were considered as the most reliable for the selection. Some crosses were found to exhibit the highest possible GCAs for the three studied traits and appeared to be the most valuable for the breeding programs. There were identified good general combiners for the three traits under study. Some cross combinations showed high and positive SCA effects and heterosis manifestations. Heterobeltiosis was also registered for the three traits most strongly expressed in productivity per plant.
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{simplepopup popup="false" name="Citation43"}KOLEVA M., DIMITROVA V., VALKOVA N., NEDYALKOVA S. 2026, IDENTIFICATION OF POTENTIAL PARENTS AND PROMISING CROSSES BASED ON COMBINING EFFECTS FOR IMPROVING PRODUCTIVITY AND FIBER QUALITY IN COTTON. Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1, ISSN 2285-5785, 353-367. {/simplepopup}