Evaluation of heterosis on yield and fruit number of hybrid bell pepper (Capsicum annuum L.) in unheated greenhouse condition

Diallel analysis supplies important information about populations for parameters of interest in breeding programs.
The objective of the present study was to determine the most promising bell pepper hybrid cultivars and to study the effects of heterosis for fruit yield and fruit number in 15 hybrids (F₁) with respect to the mean of the parents, mean of the superior parent and commercial hybrids used as checks.
Six parents belonging to Batı Akdeniz Agricultural Research Institute (BATEM) were crossed in a half diallel scheme.
The performance of 15 hybrids and pure lines were tested in randomized complete block design (RCBD) with three replications in a single crop season in unheated greenhouse.
Data obtained were submitted to analysis of variance.
The magnitude of heterosis ranged from -16.34 to 48.69% for fruit yield per plant and -23.28 to 55.82% for number of fruits per plant in total yield whereas the magnitude of heterobeltiosis varied from -21.09 to 41.51% for fruit yield per plant and -28.76 to 45.48% for number of fruits per plant in total yield.
The most promising hybrid combinations with the greatest heterosis were P₁×P₃, P₁×P₄, P₃×P₄, P₃×P₅ and P₄×P₆. Together with their parents these hybrids are thought to be important in the breeding studies of new cultivars.

XXX International Horticultural Congress IHC2018: II International Symposium on Plant Breeding in Horticulture

V. Gözen, R. Özalp, I. Çelik

pepper (Capsicum annuum L.), diallel, hybridization, heterosis, heterobeltiosis

https://doi.org/10.17660/ActaHortic.2020.1282.13