COMBINING ABILITY AND HETEROBELTIOSIS IN CROSSES AMONG LOCAL AND EXOTIC SESAME (SESAMUM INDICUM, L.) CULTIVARS

Document Type : Original Article

Authors

1 Faculty of Agriculture, Cairo University, Giza, Egypt

2 Field Crop Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt

Abstract

Six local and exotic high yielding sesame (Sesamum indicum, L.) parents were crossed in a complet diailel to investigate heterobeltiosis and general and specific combining ability. Heterobeltiosis was observed in all studied characters. The high‌est heterobeltiosis (202.22%) was dectected for seed yield/plant fol‌lowed by capsules number (71.51 %). Except for seed index and oil percentage, additive as well as non additive gene action seemed to control the expression of all the studied characters. additive gene action was predominant for plan t height t, height of first capsul, number of branches/plant and number of cap‌sules/plant, line 38 seems to be a good combiner for most characters especially seed yield and its components. Some crosses showed signifi‌cant (Sij) effect for most of the desired characters including yielding