{"title":"水稻数量性状遗传参数及主成分分析","authors":"JM AL-KHAYRI, MM EL-MALKY","doi":"10.54910/sabrao2023.55.5.9","DOIUrl":null,"url":null,"abstract":"Conventional breeding is vital in improving yield-related traits and developing high-yielding cultivars. In the presented study, an evaluation of 15 F1 hybrids compared them to their six parental genotypes for genetic variation of various traits. The results showed that the analysis of variance revealed significant (P ≤ 0.01) differences among the cross combinations and parental cultivars and among the parents and crosses. The mean sum of squares of parents vs. crosses also indicated substantial (P ≤ 0.01) for all the characteristics. The general (GCA) and specific combining ability (SCA) variances were significant (P ≤ 0.01) for all traits studied in the F1 generation. Three varieties, namely, Sakha108, Giza179, and Sakha109, were highly significantly positive for grain yield plant-1, which means these varieties can benefit as good combiners to transfer the said trait in the breeding program. In SCA, seven crosses were negative in plant height and a negative value was desirable to avoid lodging and suitable for mechanical harvesting; however, positive significant values are preferable in the rest of the traits. The results indicated that the best crosses for grain yield plant-1 and plant height were Sakha105 × Sakha102, Sakha105 × Sakha108, and Sakha108 × Sakha109. Conducting cluster analysis also exhibited the genotypes dividing into four groups. The first group included rice genotypes Sakha109 and Sakha108 alone. These cultivars, produced from a common parent Sakha101, could have genetic relations for three quantitative traits (flag leaf area, 1000-grain weight, and panicle weight). The second group, comprising Sakha 102 and Sakha 106, has a very similar genetic background because both cultivars share a common parent, Giza 177. In addition, these two rice cultivars had at par number of tillers plant-1, 1000-grain weight, and panicles plant-1. The third group included only Giza 179 belonging to Indica-Japonica varieties. A fourth group has Sakha 105 produced by different parents.","PeriodicalId":21328,"journal":{"name":"Sabrao Journal of Breeding and Genetics","volume":"150 ","pages":"0"},"PeriodicalIF":1.6000,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"GENETIC PARAMETERS AND PRINCIPAL COMPONENT ANALYSIS FOR QUANTITATIVE TRAITS IN RICE (ORYZA SATIVA L.)\",\"authors\":\"JM AL-KHAYRI, MM EL-MALKY\",\"doi\":\"10.54910/sabrao2023.55.5.9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Conventional breeding is vital in improving yield-related traits and developing high-yielding cultivars. In the presented study, an evaluation of 15 F1 hybrids compared them to their six parental genotypes for genetic variation of various traits. The results showed that the analysis of variance revealed significant (P ≤ 0.01) differences among the cross combinations and parental cultivars and among the parents and crosses. The mean sum of squares of parents vs. crosses also indicated substantial (P ≤ 0.01) for all the characteristics. The general (GCA) and specific combining ability (SCA) variances were significant (P ≤ 0.01) for all traits studied in the F1 generation. Three varieties, namely, Sakha108, Giza179, and Sakha109, were highly significantly positive for grain yield plant-1, which means these varieties can benefit as good combiners to transfer the said trait in the breeding program. In SCA, seven crosses were negative in plant height and a negative value was desirable to avoid lodging and suitable for mechanical harvesting; however, positive significant values are preferable in the rest of the traits. The results indicated that the best crosses for grain yield plant-1 and plant height were Sakha105 × Sakha102, Sakha105 × Sakha108, and Sakha108 × Sakha109. Conducting cluster analysis also exhibited the genotypes dividing into four groups. The first group included rice genotypes Sakha109 and Sakha108 alone. These cultivars, produced from a common parent Sakha101, could have genetic relations for three quantitative traits (flag leaf area, 1000-grain weight, and panicle weight). The second group, comprising Sakha 102 and Sakha 106, has a very similar genetic background because both cultivars share a common parent, Giza 177. In addition, these two rice cultivars had at par number of tillers plant-1, 1000-grain weight, and panicles plant-1. The third group included only Giza 179 belonging to Indica-Japonica varieties. 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GENETIC PARAMETERS AND PRINCIPAL COMPONENT ANALYSIS FOR QUANTITATIVE TRAITS IN RICE (ORYZA SATIVA L.)
Conventional breeding is vital in improving yield-related traits and developing high-yielding cultivars. In the presented study, an evaluation of 15 F1 hybrids compared them to their six parental genotypes for genetic variation of various traits. The results showed that the analysis of variance revealed significant (P ≤ 0.01) differences among the cross combinations and parental cultivars and among the parents and crosses. The mean sum of squares of parents vs. crosses also indicated substantial (P ≤ 0.01) for all the characteristics. The general (GCA) and specific combining ability (SCA) variances were significant (P ≤ 0.01) for all traits studied in the F1 generation. Three varieties, namely, Sakha108, Giza179, and Sakha109, were highly significantly positive for grain yield plant-1, which means these varieties can benefit as good combiners to transfer the said trait in the breeding program. In SCA, seven crosses were negative in plant height and a negative value was desirable to avoid lodging and suitable for mechanical harvesting; however, positive significant values are preferable in the rest of the traits. The results indicated that the best crosses for grain yield plant-1 and plant height were Sakha105 × Sakha102, Sakha105 × Sakha108, and Sakha108 × Sakha109. Conducting cluster analysis also exhibited the genotypes dividing into four groups. The first group included rice genotypes Sakha109 and Sakha108 alone. These cultivars, produced from a common parent Sakha101, could have genetic relations for three quantitative traits (flag leaf area, 1000-grain weight, and panicle weight). The second group, comprising Sakha 102 and Sakha 106, has a very similar genetic background because both cultivars share a common parent, Giza 177. In addition, these two rice cultivars had at par number of tillers plant-1, 1000-grain weight, and panicles plant-1. The third group included only Giza 179 belonging to Indica-Japonica varieties. A fourth group has Sakha 105 produced by different parents.
期刊介绍:
The SABRAO Journal of Breeding and Genetics is an international journal of plant breeding and genetics research and was first published in 1969. It is the official publication of the Society for the Advancement of Breeding Research in Asia and Oceania (SABRAO).
Its objectives are to: promote the international exchange of research information on plant breeding and genetics, by describing new research findings, or ideas of a basic or practical nature; and be a medium for the exchange of ideas and news regarding members of the Society.
The Journal gives priority to articles that are of direct relevance to plant breeders and with emphasis on the Asian region. Invited for publication are research articles, short communications, methods, reviews, commentaries, and opinion articles. Scientific contributions are refereed and edited to international standards.
The journal publishes articles for SABRAO members mainly. The Journal preferred strongly that at least one author should be a current member of the Society. Non-members may also publish in the journal.