Structure of the specific combining ability between two species of Eucalyptus. I. RAPD data

Abstract : Within the context of the reciprocal recurrent selection scheme developed in 1989 by CIRAD-Fore t on Eucalyptus, RAPD essays were performed to assess the genetic diversity in the two species E. urophylla and E. grandis. The molecular markers were split into two parts: the speciÞc markers (present with di¤erent fre- quencies in the two species) and the common markers (present with similar frequencies in the two species). The study analyses the structure of genetic diversity within and between the two species of Eucalyptus. Dif- ferent genetic distances are worked out for use in pre- diction equations of the individual tree trunk volume of hybrids at 38 months. Each distance is expressed as the sum of the general genetic distance and the speciÞc genetic distance. The general genetic distance based on the double presence plus the double absence of bands seems to be an interesting co-variate to use in a factor regression model. Through this model the distance calculated between species explains the general com- bining ability (GCA) and the speciÞc combining ability (SCA) of the phenotypic character with a global coe¦c- ient of determination of 81.6%
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TAG Theoretical and Applied Genetics, Springer Verlag, 1997, 94, pp.796-803
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C. P. Baril, D. Verhaegen, Ph. Vigneron, J. M. Bouvet, A. Kremer. Structure of the specific combining ability between two species of Eucalyptus. I. RAPD data. TAG Theoretical and Applied Genetics, Springer Verlag, 1997, 94, pp.796-803. 〈cirad-00845844〉

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