COMBINING ABILITY STUDIES FOR GRAIN YIELD AND SOME ASSOCIATED CHARACTERS IN SOME RICE LINES | ||||
| Journal of Plant Production | ||||
| Article 11, Volume 5, Issue 4, April 2014, Page 685-697 PDF (606.9 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2014.53882 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. S. Sultan1; M. I. Abo Youssef2; M. A. Abdel-Moneam1; M. M. El-Shenawy2 | ||||
| 1Agronomy Department, Fac. of Agric. Mansoura University, Egypt. | ||||
| 2Rice Research Section, Field Crops Res. Inst., ARC, Giza, Egypt. | ||||
| Abstract | ||||
| This study was conducted at Rice Research and Training Center (RRTC), of Farm Sakha - KafrelSheikh, Egypt, during the summer seasons of 2010 , 2011 and 2012 to investigate the combining ability of some parental lines in their crosses. Three cytoplasmic male sterile (CMS) lines as female parents and seven restorer lines as male parents were hybridized to produce 21 F1 hybrids in a line x tester mating model (Kempthorne, 1957). The General and specific combining ability effects of the genotypes for the characters under study were estimated. The results showed that the characters were controlled by general combining ability (GCA) and specific combining ability (SCA) . The CMS and restorer lines showed favorable effects for GCA of yield and yield components. The results indicated that most characters were largely governed by additive gene action. finally, the hybrid combination IR69625A× Giza 179 could be used as a promising hybrid for early maturing and high yielding varieties. | ||||
| Keywords | ||||
| rice; Hybrid Rice; Combining ability; cytoplasmic male sterility; line x tester model; Yield and yield components | ||||
|
Statistics Article View: 87 PDF Download: 274 |
||||
