ISHS Acta Horticulturae 139: Fruit Set and Development, XXI IHC
HERITABILITY OF THE CHARACTER "SECONDARY BLOOMING" ON PEAR (PYRUS COMMUNIS). |
| Authors: | B. THIBAULT, C. WELCKER, Y. LESPINASSE |
| Abstract:
The progenies of 12 parents were registred in june, july and august for the character "secondary blooming", responsable of the great susceptibility of the cultivar PASSE CRASSANE to fire blight in the south west of France. The mean values of these progenies allowed to build up four groups. PRESIDENT DROUARD, DUCHESSE DE MOUCHY and DOYENNE DU COMICE belong to the first group where the progenies show few secondary blossoms whereas the progenies of PASSE CRASSANE and BEURRE D'AVRIL have many seedlings with this characteristic. For some parents the observed values are extremely variable according to the combinations. Analysis with the Griffing method of a partial diallel with 7 parents and 21 progenies allowed to estimate the general and specific combining abilities for this character. | |
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