Sokoine University of Agriculture

Variation and interrelationships among yield and yield components in lowland rice genotypes (oryza sativa l.) in Mwanza Region

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dc.contributor.author Machunde, Zakayo Alphaxad
dc.date.accessioned 2015-05-19T09:02:21Z
dc.date.available 2015-05-19T09:02:21Z
dc.date.issued 2013
dc.identifier.uri https://www.suaire.sua.ac.tz/handle/123456789/591
dc.description.abstract Three experiments were conducted at Ukiriguru, Misungwi District, Nansole and Bukindo in Ukerewe district with the aim of investigating genotypic and phenotypic variation, interrelationship and magnitude of Genotype x Environment interactions and stability parameters for rice grain yield and yield components and other agronomic characters in lowland rice genotypes. The experiments, using Randomized Complete Block Design were conducted during 2012 main rain season. Fifteen genotypes obtained from Sokoine University of Agriculture and a local check was used for the experiments. Analysis of variance revealed that there were significant differences among genotypes for all variables studied at all sites. There were no significant differences among locations studied while significant G x E interaction was observed for all the traits except for panicle weight and 1000 grain weight. Furthermore, there was predominance of positive and significant correlation between grain yield and various yield components. In addition, broader genotypic and phenotypic coefficient of variation coupled with higher heritability was observed which emphasizes presence of genetic variability for studied characters. Importantly, grain yield per plant and number of panicles per plant had strong relationship with grain yield reflecting the great contribution of these traits toward grain yield. Thus using these traits as selection criteria would remarkably result into increase in rice grain yield. The presence of significant Genotype x Environment interaction for all characters except for panicle weight and 1000 grain, suggested the need for testing the genotypes in multilocations in order to develop or select genotypes with wide adaptability or recommend varieties for specific environment en_US
dc.description.sponsorship Ministry of Agriculture Food Security and Cooperatives through East Africa Agricultural Productivity Program (EAAP) en_US
dc.language.iso en en_US
dc.language.iso en en_US
dc.language.iso en en_US
dc.language.iso en en_US
dc.publisher Sokoine University of Agriculture en_US
dc.subject Rice genotypes en_US
dc.subject Oryza sativa l en_US
dc.subject Rice grain en_US
dc.subject Yield en_US
dc.subject Lowland rice en_US
dc.subject Yield components en_US
dc.subject Mwanza Region en_US
dc.title Variation and interrelationships among yield and yield components in lowland rice genotypes (oryza sativa l.) in Mwanza Region en_US
dc.type Thesis en_US
dc.type Thesis en_US
dc.type Thesis en_US
dc.type Thesis en_US


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