ISHS Acta Horticulturae 637: XXVI International Horticultural Congress: Advances in Vegetable Breeding
BREEDING STUDIES ON PEPPER |
| Authors: | R.M. Khalil, F.A. Ali, A.M. Metwally, S.T. Farag |
| Keywords: | Capsicum annuum, heterosis, combining ability, potence ratio |
| Abstract:
Heterosis, combining ability and inbreeding depression for some characters were studied in pepper (Capsicum annuum L.) in unheated plastic houses. Hybrid vigor was detected for both early and total fruit yield, and significant positive average degree of heterosis values were obtained. Both additive and non-additive gene effects were involved in the inheritance of the traits studied. The additive gene effects were more important than the non-additive ones in the genetic mechanism for total yield and average fruit weight, whereas for early yield the non-additive effects play the main role. The best combiners cultivars or lines were: Feherzon, 25–1, Yolo Wonder and Greyga for early yield; Sweet Banana, Marconi Rosso, Casca Dura and Avelar for total yield as fruit number and weight. The best F1 hybrids were: Feherzon x Sweet Banana and Avelar x Marconi Rosso for early yield; 5–27 x Yolo Wonder, Suptol x Avelar and 5–27 x Casca Dura for total yield. Regarding inbreeding depression, all F2 populations were lower than their corresponding F1 crosses in early and total yield. | |
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