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Inheritance of the Number of Ovules per Ovary and Selection of Cacao Genotypes

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DOI: 10.4236/ajps.2013.47169    3,975 Downloads   5,366 Views   Citations

ABSTRACT

We have characterized the number of ovules per ovary (NoOV) in cacao plants originated from crossing the clones CCN 51 and TSH 1188 (segregating progeny) and determined the heritability of this characteristic in order to select plants with higher NoOV in this progeny. The NoOV was calculated as the average of 10 flowers per plant and ranged from 44.8 to 58.6 between the six clones (two parents and four clones belonging to their genealogy). In the progeny (n = 209 plants) the NoOV averaged 54.3 (range 44.1 to 67.8). The NoOV was distributed uniformly among the progeny indicating that this trait is conditioned by polygenes. Its heritability was estimated at 67.7%. The 32 plants with NoOV similar or superior to the genitor CCN 51 (highest amount among clones) were selected for use in the genetic improvement program. We showed that this population is suitable for genetic mapping, molecular marker identification and selection of superior cacao genotypes.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

R. Bahia, R. Corrêa, R. Santos, R. Machado, E. Luz, I. Araújo and D. Ahnert, "Inheritance of the Number of Ovules per Ovary and Selection of Cacao Genotypes," American Journal of Plant Sciences, Vol. 4 No. 7, 2013, pp. 1387-1392. doi: 10.4236/ajps.2013.47169.

References

[1] R. M. Alves, A. A. F. Garcia, E. D. Cruz and A. Figueira, “Seleção de Descritores Botânico-Agronômicos Para Caracterização de Germoplasma de Cupuaçuzeiro,” Pesquisa Agropecuária Brasileira, Vol. 38, No. 7, 2003, pp. 807-818. doi:10.1590/S0100-204X2003000700004
[2] B. G. D. Bartley, “The Genetic Diversity of Cocoa and Its Utilization,” CABI, Cambridge, 2005. doi:10.1079/9780851996196.0000
[3] G. C. T. Castro, T. N. S. Pereira, G. A. Carleto and B. G. D. Bartley, “Caracterização de Recursos Genéticos do Cacaueiro. III Flor Das Seleções CEPEC, EEG, SIAL, BE, MA, RB, CA e CAS,” Agrotropica, Vol. 1, No. 1, 1989, pp. 27-33.
[4] C. Cilas, R. Machado and J.-C. Motamayor, “Relations between Several Traits Linked to Sexual Plant Reproduction in Theobroma cacao L.: Number of Ovules per Ovary, Number of Seeds per Pod, and Seed Weight,” Tree Genetics & Genomes, Vol. 6, No. 2, 2010, pp. 219226. doi:10.1007/s11295-009-0242-9
[5] L. A. S. Dias, “Melhoramento Genético do Cacaueiro,” Editora Folha de Viçosa, Viçosa, 2001.
[6] O. López, G. A. Enríquez and J. Soria, “Herencia del Número de óvulos por Ovario en Theobroma cacao L.,” Turrialba, Vol. 38, No. 3, 1988, pp.163-167.
[7] P. Lachenaud, F. Bonnot and G. Oliver, “Use of Floral Descriptors to Study Variability in Wild Cocoa Trees (Theobroma cacao L.) in French Guiana,” Genetic Resources and Crop Evolution, Vol. 46, No. 5, 1999, pp. 491-500. doi:10.1023/A:1008763321959
[8] CEPEC—Centro de Pesquisas do Cacau, “Informe Técnico,” CEPLAC, Ilhéus, 1974.
[9] R. M. Silva, “Estudo do Sistema Reprodutivo e Divergência Genética do Cupuaçuzeiro (Theobroma grandiflorum Willd ex Spreng Schum),” Dissertação (Mestrado em Genética e Melhoramento de Plantas)—Escola Superior de Agricultura Luiz de Queiróz, Universidade de São Paulo, Piracicaba, 1996.
[10] R. M. F. Santos, U. V. Lopes, R. C. Bahia, R. C. R. Machado, D. Ahnert and R. X. Corrêa, “Marcadores Microssatélites Relacionados Com a Resistência à Vassoura-de-Bruxa do Cacaueiro,” Pesquisa Agropecuária Brasileira, Vol. 42, No. 8, 2007, pp. 1137-1142. doi:10.1590/S0100-204X2007000800010
[11] M. M. Yamada, F. G. Faleiro, A. B. Flores, U. V. Lopes, J. L. Pires, R. X. Corrêa and R. F. Santos, “Microsatellite Diversity and Heterozygosity of Parents of a Cocoa Breeding Population,” Crop Breeding and Applied Biotechnology, Vol. 9, No. 1, 2009, pp. 17-22.
[12] R. C. Bahia, U. V. Lopes, E. D. M. N. Luz, R. S. Carvalho, R. C. R. Machado, D. Clement, R. M. F. Santos, D. Ahnert and R. X. Corrêa, “Caracterização Fenotípica de uma População Segregante de Cacaueiro Quanto à Resistência à Podridão-Parda,” 15th International Cocoa Research Conference, Vol. 1, San José, 2007, pp. 445451.
[13] O. Sounigo, R. Umaharan, Y. Christopher, A. Sankar and S. Ramdahin, “Assessing the Genetic Diversity in the International Cocoa Genebank, Trinidad (ICG,T) Using isozyme Electrophoresis and RAPD,” Genetic Resources and Crop Evolution, Vol. 52, No. 8, 2005, pp. 1111-1120. doi:10.1007/s10722-004-6110-4
[14] J. M. Marita, J. M. Rodriguez and J. Nienhuis, “Development of an Algorithm Identifying Maximally Diverse Core Collections,” Genetic Resources and Crop Evolution, Vol. 47, No. 5, 2000, pp. 515-526. doi:10.1023/A:1008784610962
[15] SAS Institute, “SAS/STAT User’S Guide: Version 6,” 4th Edition, SAS Institute, Cary, 1989.
[16] D. Clement, A. M. Risterucci, J. C. Motamayor, J. A. K. N’Goran and C. Lanaud, “Mapping Quantitative Trait Loci for Bean Traits and Ovule Number in Theobroma cacao L.,” Genome, Vol. 46, No. 1, 2003, pp. 103-111. doi:10.1139/g02-118
[17] J. V. Soria and O. Esquivel, “Alguns Resultados del Programa de Mejoramiento Genético de Cacao en el IICA-Turrialba,” Internacional Cocoa Research Conference, 2nd Edition, Bahia, 1969, pp. 35-42.

  
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