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EL-Diasty, Z., EL-Mowafi, H., Hamada, M., Belih, E. (2008). LINE BY TESTER ANALYSIS FOR YIELD AND YIELD COMPONENTS IN HYBRID RICE. Journal of Plant Production, 33(12), 8505-8513. doi: 10.21608/jpp.2008.171560
Z. M. EL-Diasty; H. F. EL-Mowafi; M. S. Hamada; E. M. Belih. "LINE BY TESTER ANALYSIS FOR YIELD AND YIELD COMPONENTS IN HYBRID RICE". Journal of Plant Production, 33, 12, 2008, 8505-8513. doi: 10.21608/jpp.2008.171560
EL-Diasty, Z., EL-Mowafi, H., Hamada, M., Belih, E. (2008). 'LINE BY TESTER ANALYSIS FOR YIELD AND YIELD COMPONENTS IN HYBRID RICE', Journal of Plant Production, 33(12), pp. 8505-8513. doi: 10.21608/jpp.2008.171560
EL-Diasty, Z., EL-Mowafi, H., Hamada, M., Belih, E. LINE BY TESTER ANALYSIS FOR YIELD AND YIELD COMPONENTS IN HYBRID RICE. Journal of Plant Production, 2008; 33(12): 8505-8513. doi: 10.21608/jpp.2008.171560

LINE BY TESTER ANALYSIS FOR YIELD AND YIELD COMPONENTS IN HYBRID RICE

Article 2, Volume 33, Issue 12, December 2008, Page 8505-8513  XML PDF (694.54 K)
Document Type: Original Article
DOI: 10.21608/jpp.2008.171560
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Authors
Z. M. EL-Diasty1; H. F. EL-Mowafi2; M. S. Hamada3; E. M. Belih4
1Genetics Dept., faculty of Agric., Mansoura University, Egypt.
2Rice Res. And Training Center (RRTC), Sakha, Kafr EL-Sheikh, Egypt.
3Genetics Dept., faculty of Agric., Damietta Branch, Mansoura University, Egypt.
41- Genetics Dept., faculty of Agric., Mansoura University, Egypt. 2- Rice Res. And Training Center (RRTC), Sakha, Kafr EL-Sheikh, Egypt.
Abstract
This study was conducted to investigate combining ability and gene action of rice hybrids and their parental lines. Four CMS lines as female parents and three restorers' lines as male parents were hybridized to produce  12 F1 hybrids were used in a line x tester mating design. the resulted genotypes were used to estimate combining ability, heterosis, and gene action for yield and yield components characters. The results indicated that most characters  were largely governed by additive gene action. General and specific combining ability effects of the genotypes for the characters under study were estimated. The results showed that the characters were controlled both general combining ability (GCA) and specific combining ability (SCA) . The CMS and restorer lines showed variable  effects for GCA. The study also indicated the presence of  heterosis  over the better parent (BP), Mid-parents (MP) and over the best check variety Giza 178 for nine characters of yield and yield components.
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