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Journal of Plant Sciences
  Year: 2017 | Volume: 12 | Issue: 2 | Page No.: 52-58
DOI: 10.3923/jps.2017.52.58
Screening for Yield Related Characters in Some Landrace Accessions of Oryza sativa Linn. in Nigeria
Olubukola Grace Abraham , Chinyere Constance Nwokeocha, Richard Olutayo Akinwale and Julius Olaoye Faluyi

Abstract:
Background and Objective: The continual research into increasing yield in rice is very important in ensuring food security. There has been stagnation in yield/hectare of rice since the introduction of IR8 in the 1980s, therefore there is the need for breeders to go back to the wild relatives and landraces of Oryza sativa, which have proven to be veritable sources of genes for germplasm improvement. This study was aimed at highlighting vegetative characters that are directly associated to yield which can help the breeder during selection process. Materials and Methods: Thirty-seven accessions selected from four local varieties of landraces were used in this study. These were planted on the field in rows of fourteen plants, each row representing an accession. Data were collected in the accessions on vegetative traits and yield characters. The data were subjected to one-way analysis of variance (ANOVA) to assess diversity among accessions. Pearson correlation coefficients was used to determine relationships among characters and principal components analysis was used to identify major attributes that are responsible for the variations observed in the accessions. Results: Results showed that the number of days to booting and maturity highly correlated with the total number of spikelets produced as well as the leaf area index (LAI) of both the penultimate and flag leaves. The two groups of yield patterns observed were intermediate or late maturing, high tillering, dense panicle with low TGW (1000-grain weight) on one side and early maturing, low tillering, less dense or sparse panicle with high TGW on the other. Conclusion: The length of the ligule was shown to be the significant distinguishing morphological character between these two categories.
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How to cite this article:

Olubukola Grace Abraham, Chinyere Constance Nwokeocha, Richard Olutayo Akinwale and Julius Olaoye Faluyi, 2017. Screening for Yield Related Characters in Some Landrace Accessions of Oryza sativa Linn. in Nigeria. Journal of Plant Sciences, 12: 52-58.

DOI: 10.3923/jps.2017.52.58

URL: https://scialert.net/abstract/?doi=jps.2017.52.58

 
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