HETEROSIS AND PERFORMANCE OF GRAIN SORGHUM (Sorghum bicolor L. Moench) UNDER DROUGH CONDITIONS

Yassien,, H. E.; El-Beially, I. E.M.A.; Yones, F. G.; Mohamed, I. N.A.

doi:10.21608/jpp.2007.220888

HETEROSIS AND PERFORMANCE OF GRAIN SORGHUM (Sorghum bicolor L. Moench) UNDER DROUGH CONDITIONS

Document Type : Original Article

Authors

¹ Dept. of Agronomy, Fac . of Agric., AL-Azhar Univ., Cairo ,Egypt

² Dept. of Agronomy, Fac . of Agric., AL-Azhar Univ., Assiut, Egypt

10.21608/jpp.2007.220888

Abstract

The present study was carried out at two Experimental Farm ,Al-Azhar Univ. at Assiut and Shandaweel Research Station at Sohag .The performance and heterosis in grain sorghum with reduced water applied used were studied .Five female sterile lines (A-lines) with six Egyptian restorer lines( R-lines ) released from Egyptian program at Shandaweel. The parents were crossed to produce thirty crosses .Forty two genotypes (30 hybrids and their 11 parents as well as the hybrid Shandaweel 6 as check were evaluated in summer growing season 2004 in two locations Assiut and Sohag.
The combined analysis of variance over locations, showed highly significant differences among parents and crosses. Interaction effects were significant for parents and crosses with locations for all studied traits.
Results indicated that two B-lines (BTX-89002 and ICSB-35) and two R-lines (Adv.3/2002 and Adv.4/2002) were drought tolerance genotypes and gave the highest DTI(drought tolerance index) and lowest DSI(drought susceptibility index).
The estimates of heterosis for grain yield/ plant indicated that ,the crosses (ICSA-70x RTX-2794 ),( ICSA-70x RTX-2895) and (ICSA-155x RTX-2895) had the best heterotic effect over the two locations under both irrigation levels. Also ,these crosses are drought tolerance and significantly outyielded the check Shandaweel -6.