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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (708) Last page : (714)
Article doi: : http://dx.doi.org/10.18782/2320-6794

Screening for Blast and Genotype by Environment Interaction of Rice

Gbadeyan, S. T.¹, Salami, A. O.², Maji, E. A.¹, Umar, A.¹, Isong A.³*, Ehirim, B. O.¹ and Uyokei U.¹

¹National Cereals Research Institute, P.M.B 8 Bida, Nigeria
²Obafemi Awolowo University, Ile-Ife, Nigeria
³Tamil Nadu Agricultural University, Coimbatore, India
*Corresponding Author E-mail: tohkunbor@gmail.com
Received: 13.08.2018 | Revised: 18.09.2018 | Accepted: 26.09.2018  

 ABSTRACT

The study was to identify rice genotypes that are resistant to leaf blast disease and assess the effect of different environments on the resistance and growth parameters of the rice genotypes. Thirty rice genotypes were planted at NCRI research fields at Badeggi and Edozhigi. The experiment was laid out in a 5 by 6 lattice design with three replicates. Observations were made on plant height, number of tillers and leaf blast scores.The data were subjected to Analysis of Variance (ANOVA) and means were separated using LSD at 5% level of probability. Genotype by genotype by environment (GGE) biplot was applied to determine the interaction. The results revealed that the genotypes responded differently to leaf blast. Significant interaction was also observed between the environment and genotypes regarding leaf blast disease. Genotype contributed highest sum of squares to number of tillers and plant height. The mean separation also revealed that the number of tillers and the plant height at maturity did not differ significantly from one environment to another. The genotypes TETEP, K1, IRBL5-M, NIPPON BARE and MOROBEREKAN were found to be resistant to leaf blast disease across environments. It was also concluded that environment played major role in disease development in each genotype whereas the growth parameters were mainly controlled by their genetic   composition.

Key words: Rice, Interaction, Resistance, Environments, Genotype.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Gbadeyan, S.T., Salami, A.O., Maji, E.A., Umar, A., Isong, A., Ehirim, B.O. and Uyokei, U., Screening for Blast and Genotype by Environment Interaction of Rice, Int. J. Pure App. Biosci.6(5): 708-714 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6794