Some methods for improving selection efficiency of potato breeding in Cuba

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Published: Jul 5, 2013
Keywords:
plant breeding, selection, methods, path coefficients, potato, Solanum tuberosum

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María E. González
Instituto Nacional de Ciencias Agrícolas

Abstract

Eight potato hybrid families from the breeding program were planted at random in the field at the National Institute of Agricultural Sciences from 1990 to 1995, with the objective of using different selection methods in the early stages in order to increase the efficiency of this program. Seven selection approaches were evaluated: simple selection of yield, simple selection of tuber number per plant, simple selection of average tuber weight, simultaneous selections of the characters 1+2+3, 2+3, 2+1 and 3+1, to determine selection differentials and selective differences. The main statistics of the first three generations were estimated, besides recording lineal correlations and path coefficients. The modified augmented design was used to control soil heterogeneity whereas clonal values were adjusted by means of the row-column corrective method; the controls used were Desirée, Baraka and Red Pontiac varieties, which were planted on a 3x3 Latin Square
design. It was verified that the simultaneous selection approach
considering yield, tuber number and average tuber weight was
the most appropriate for selection in the first stages, it corroborating that the main yield components are tuber number
and average tuber weight. It was proved that the Modified Augmented design was adequate to measure environmental
heterogeneity in the first stages of the breeding program.

Article Details

How to Cite
González, M. E. (2013). Some methods for improving selection efficiency of potato breeding in Cuba. Cultivos Tropicales, 21(3), 67–71. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/759
Issue
Vol. 21 No. 3 (2000)
Section
Original Article

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