COMBINING ABILITY OF SOME CANOLA (Brassica napus, L.) INBRED LINES AND THEIR HYBRIDS UNDER DIFFERENT PLANT POPULATION DENSITY. | ||
| Journal of Plant Production | ||
| Article 4, Volume 27, Issue 11, November 2002, Pages 7225-7235 PDF (10.37 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2002.257025 | ||
| Authors | ||
| A. E. Sharief,1; A. M. Salama1; M. M. Keshta2; M. A. A. Mohammed3 | ||
| 1Agron. Dept., Fac. of Agric. Mansoura Univ . | ||
| 2Field crops Res. Inst. Agric. Res. Center Giza, Egypt. | ||
| 3Agron. Dept., Fac. of Agric. Mansoura Univ | ||
| Abstract | ||
| Two field experiments were carried out at the Experimental Station, Fac of Agric Mansoura Univ during the growing seasons of 1997/98 and 1998/99.The objectives of thl mvesuqatron was aimed to evaluate combining ability of some canota inbred lines and their hybnds .mder different plan population density. The Ijenetic Weltel inls were the four line 0' Drakkar, Frdo. Serw 4 and Serw 6 as ell as all possible combinations among them according to a comple e diaitel matting design. A. split plot design wrth thre replicates W s used. Test of 19 lficance of the mean squares for general combining ability (GCA) and specrnc cornbuunq ability (SCA) cleared that GCA and SCA were highly . ign,ficant for most of studied trails III addition, the magnitudes of SCA were larger ,han thE' rrespondmq values of GCA In most studied traits and this finding suggested th t mese traits were mainly controlled by dominance genes, indicating :h I the non-additive genetic variance played a major role in the inheritance of these traits On the olher hand, the mean squares of reciprocal effects were significant of most of cases but Ihelr values were Ie s than the correspo ding values of GCA and ,)CA. "his rrdicates that maternal effect played a minor role In the expression of these '-alts. For lCA ffp.c:ts, ttle pa-ents S 30 and S 32 could be utilized in a breeding ')rogram to: rnprov no most of studied traits to pass favorable genes for irnprovinq h"bnds_ For SeA effects. the two c mbinauons of P, . - p) and P2 X P. showed the '"llghest pos.tive and Significant values for most of studiea traits | ||
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