Estimation of heredabilities and coefficients of additive and phenotypic genetic variance in Pinus cubensis Griseb.
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Abstract
In the mark of the Program of Improvement Genetics of Pinus cubensis Griseb, begun in Santiago of Cuba, Holguín and Guantánamo starting from 1970, once selected the population of improvement, the settled down a bank clonal, five tests of pollination offspring opened up in serial years being planted, from 1977 until 1981, and the last one test in 1986; The objective of the investigation consisted on estimating in ages understood between the 13 and 22 years the heritability reached in wide, strict and individual sense, as well as the coefficients of variation genetic additive and of variation phenotypic in the six rehearsals of offspring. The results showed a relatively high genetic control for the evaluated characters of growth (total height, diameter to 1,30 m and total volume with bark), also existing a marked variability in the population bases, what would allow to this age to develop the improvement for selection.
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