Articles
DATE OF RIPENING AND TWO MORPHOLOGICAL FRUIT TRAITS IN PEACH PROGENIES
Article number
254_9
Pages
59 – 66
Language
Abstract
Six progenies from controlled crosses of early, medium and late ripening cultivars were evaluated to study ripening date heritability.
Uni-, bi- and tri-modal distribution frequency patterns of the progeny were observed for date of ripening.
Crosses between a medium and several early-ripening cultivars tended toward lateness.
The offspring from an early parent tended toward earliness when crossed with a medium ripening and toward lateness when crossed with a late ripening.
Therefore each parent seems to play an important role, and a self-pollination program needs to be developed to evaluate this potential.
In all likelihood, a few major genes appear to be involved in ripening date heritability.
Uni-, bi- and tri-modal distribution frequency patterns of the progeny were observed for date of ripening.
Crosses between a medium and several early-ripening cultivars tended toward lateness.
The offspring from an early parent tended toward earliness when crossed with a medium ripening and toward lateness when crossed with a late ripening.
Therefore each parent seems to play an important role, and a self-pollination program needs to be developed to evaluate this potential.
In all likelihood, a few major genes appear to be involved in ripening date heritability.
Four progenies were investigated for fruit shape.
A high range of variability was found by crossing cultivars of round and elongated fruit with a slight bias toward round fruit.
The stone/flesh ratio also was investigated in two progenies.
Typical quantitative patterns in frequency distribution of the seedlings were found.
The low ratio shown by a high percentage of seedlings in one progeny, and in the other the increase in the fruit weight to stone weight ratio make it possible to select for favorable genotypes.
Publication
Authors
D. Bassi, M. Gambardella, P. Negri
Keywords
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