Genetic diversity of the FLAR rice varieties released between 2003-2014.

Authors

  • Luis Eduardo Berrio-Orozco Fondo Latinoamericano de Arroz de Riego (FLAR).
  • Édgar Alonso Torres-Toro Centro Internacional de Agricultura Tropical (CIAT).
  • Jairo Barona-Valencia Centro Internacional de Agricultura Tropical (CIAT).
  • Juan Bosco Cuásquer-Sedano Centro Internacional de Agricultura Tropical (CIAT).

DOI:

https://doi.org/10.15517/am.v27i2.20695

Keywords:

pedigrees, traditional cultivars, genetic diversity, parents, genes.

Abstract

The objective of this study was to determine the genetic basis, the coefficient of kinship, and the genetic diversity of rice varieties released between 2003 and 2014, in thirteen member countries of the Latin America Fund for Irrigated Rice (FLAR). Pedigrees of o 51 rice varieties were analyzed at the International Center for Tropical Agriculture (CIAT), Palmira, Colombia between 2014-2015 The genetic variability of these varieties was represented by 120 ancestral or traditional cultivars (2.4 ancestral/variety); 33 of these contributed to the 83.9% of their genes, from which, three (ancestors with IR 8 origin), accounted for 35.6% of their genes. It was also shown that the coefficient of kinship (rxy) between different commercial varieties ranged from 0.03 (very unrelated), up to 0.99 (highly related). The average rxy of all 51 varieties was = 0.19. Regarding the varieties by country, the average rxy varied, the minimum was obtained by Ecuador 0.13 and the varieties from Venezuela obtained the maximum 0.31. The cluster analysis separated the genotypes in fourteen different groups based on highly related or very unrelated varieties. These results indicate that a broadening of the genetic base has been accomplished. 

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References

Acevedo, M., E. Torres, O. Moreno, W. Castrillo, O. Torres, R. Alvarez, E. Reyes, G. Torrealba, G. Salazar, y M. Navas. 2007. Base genética de los cultivares de arroz de riego liberados en Venezuela. Agron. Trop. 57:197-204.

Berrío-Orozco, L.E. 1999. Determinación de la variabilidad genética del arroz (Oryza sativa L.) desarrollado con germoplasma de africano. Tesis MSc., Universidad Nacional de Colombia, Palmira, COL.

Berrío Orozco, L.E., y E.P. Guimarães. 1995. Variabilidad Genética de las variedades de arroz liberadas en 1993 en América Latina y El Caribe. En: INGER, editor, Informe INGER América Latina 1994. CIAT, Palmira, COL. p. 56-65.

CIAT (Centro Internacional de Agricultura Tropical). 1987. Registro de cruzamientos realizados por los programas de arroz de ICA y del CIAT (1957-1986). CIAT, Cali, COL.

Cuevas-Pérez, F., E.P. Guimarães, L.E. Berrío, and D.I. González. 1992. Genetic base of irrigated-rice in Latin America and the Caribbean, 1971-1989. Crop Sci. 32:1054-1059.

Falconer, D.S., and T.F.C. Mackay. 1996. Introduction to quantitative genetics. 4 ed. Longman, Essex, GBR.

González-Tous, D.I., L.E. Berrio, N. Manosalva, y F. Cuevas. 1991. Origen de las variedades de arroz en Colombia 1971-1989. Arroz (Colombia) 42(372): 8-16.

Gopal, J., and K. Oyama. 2005. Genetic base of Indian potato selections as revealed by pedigree analysis. Euphytica 142:23-31.

IRIS (Internacional Rice information System). 2011. Breeding Management System (BMS), Generation Challengue Program, CGIAR. https://www.integratedbreeding.net/breeding-management-system (accessed 2013-2014).

Manosalva de Nivia, L.E. Berrio, D.I. González, y F. Cuevas. 1991. Variabilidad genética del arroz en América Central. Trabajo presentado durante la XXXVII Reunión Anual del Programa Cooperativo Centroamericano para el Mejoramiento de Cultivos y Animales (PCCMCA). 18-22 marzo 1991. PAN.

Rajaran, S., N.E. Bourlaug, and M. Van Guinkel. 2002. CIMMYT international wheat breeding. In: B.C. Curtis et al., editors, Bread wheat: improvement and Production. FAO. Roma, ITA. p. 103-118.

Rangel, P., E. Guimarães, e P. Neves. 1996. Base genética das cultivares de arroz (Oryza sativa L.) irrigado do Brasil. Pesq. Agropec. Bras. 31:349-357.

Rohlf, F.J. 1997. NTSYS-pc. Numerical taxonomy and multivariate analysis system. Version 2.2e. Exeter Software, NY, USA.

Tanksley, S.D., and J.C. Nelson. 1996. Advanced backcross QTL analysis: a method for the simultaneous discovery and transfer of valuable QTLs from unadapted germplasm into elite breeding lines. Theor. Appl. Genet. 92:191-203.

Vello, N.A., D.M. Hiromoto, and A.J.B.V. Azevedo-Filho. 1988. Coefficient of parentage and breeding of Brazilian soybean germplasm. Rev. Bras. Genét. 11:679-697.

Wang, Z.W., G. Second, and S.D. Tanksley. 1992. Polymorphism and phylogenetic relationships among species in the genus Oryza as determined by analysis of nuclear RFLPs. Theor. Appl. Genet. 83:565-581.

Published

2016-06-20

How to Cite

Berrio-Orozco, L. E., Torres-Toro, Édgar A., Barona-Valencia, J., & Cuásquer-Sedano, J. B. (2016). Genetic diversity of the FLAR rice varieties released between 2003-2014. Agronomía Mesoamericana, 27(2), 217–231. https://doi.org/10.15517/am.v27i2.20695