STUDIES ON PRODUCTION OF HYBRIDS PEPPER (Capsicum annuum L.): 2- ESTIMATION OF HETEROSIS AND TYPES OF GENETIC VARIANCES IN SWEET PEPPER (Capsicum annuum L. ) FOR SOME ECONOMIC TRAITS | ||||
| Journal of Plant Production | ||||
| Article 25, Volume 32, Issue 6, June 2007, Page 4703-4711 PDF (711.04 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2007.208790 | ||||
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| Authors | ||||
| T. M. El-Gazzar1; S. M. Farid2; K. Y. Ibrahim2 | ||||
| 1Vegetable and Floriculture Dept., Fac. of Agric., Mansoura University . | ||||
| 2Vegetable Research Dept., Hort. Res. Inst., Agric. Res. Center , Cairo. | ||||
| Abstract | ||||
| Four pepper cultivars and their hybrids included reciprocals were evaluated in two experimental seasons ( 2003 and 2004 ) to the estimates of heterosis , combining ability , types of genetic variations and heritability for some economic characters . The results showed that , heterosis was detected for all the studied traits in both seasons , and the highest values of heterosis were recorded for early yield , total yield and quality traits , while flowering date and fruit shape traits gave a negative and significant estimates of heterosis, however flowering date as an exception showed heterosis, since it had negative value from both mid and better parent . General combining ability (G.C.A ) was significant for all the studied traits and was the more important for all traits except for flowering date , early yield and total soluble solids (T.S.S.) ,since, specific combining ability was the large component in inheritance these traits . Both additive and non-additive gene effects were involved in the inheritance of all the studied traits , the additive gene effects were more important than the non-additive ones in the genetic mechanism for the all traits except for flowering date , early yield and total soluble solids (T.S.S.) , the dominance genetic variance play the main role in inheritance of these traits . The presence of large amounts of additive gene variance indicated that selection for improving quantitative traits would be possible in the segregating generations . Moderate to high heritability estimates were observed for all traits in both seasons and fruit characteristics and vitamin C gave the highest estimates of heritability . | ||||
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