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Articles by I. Sanchez
Total Records ( 1 ) for I. Sanchez
  Kayode A. Sanni , O.J. Ariyo , D.K. Ojo , G. Gregorio , E.A. Somado , I. Sanchez , M. Sie , K. Futakuchi , S.A. Ogunbayo , R.G. Guei and M.C.S. Wopereis
  Genotype by Environment Interaction (GEI) is a major complications in plant breeding. We used Additive Main Effects and Multiplicative Interaction (AMMI) to evaluate the effects of GEI in NERICA rice genotype and their adaptation in two years at three locations; Ibadan-7°30’ N, 3°58’ E, 210 m.a.s.l. (Nigeria), Cotonou-6°24’ N, 2°19’ E, 15.5 m.a.s.l. and Deve-6°48’ N, 1°47’ E, 72 m.a.s.l. (Benin Republic). Twenty two rice genotypes were grown in 2005 and 2006 under upland condition, using randomized complete block design with three replications. Main effects due to environments (E), genotypes (G) and GxE interaction (GEI) were significant (p<0.01), with the highest variation of 43.1% accounted for by environmental effects. The first four Interaction Principal Component Axes (IPCA1, 2, 3 and 4) were significant (p<0.01) and cumulatively contributed 98.5% of the total GEI. AMMI biplot accounted for 91.4% of the total sum of squares. The stability study indicated that NERICAs 3, 10, 11 and 18 could be considered stable in any of the environments, due to their low interactions. However, NERICA 11 was the most promising of the genotypes, with high yield (5.15 t ha-1) and a broad environmental adaptation.
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