ISHS Acta Horticulturae 465: IV International Peach Symposium
ASSIMILATE ALLOCATION TO VEGETATIVE AND FRUIT GROWTH |
| Authors: | M. Ben Mimoun, M. Génard, J. Besset |
| Keywords: | Prunus persica, leaf fruit ratio, assimilate competition, leaves, fruit-bearing shoot |
| Abstract:
Fruit growth was studied at different leaf fruit (L:F) ratios in the presence and absence of vegetative growth on girdled fruit-bearing shoot to study vegetative and reproductive competition in a late maturing peach cultivar. Vegetative growth seemed to be independent of fruit growth and was similar between different fruit-bearing shoots at different L:F ratios. Vegetative growth penalized fruit growth at the beginning of the second fruit growth phase. Fruit growth depended on L:F ratio and was favored when the leafy shoot had more than 7 to 8 leaves. In this case, fruit associated with vegetative growth grew better than fruit with only five leaves per shoot. Two to three leaves seemed to be necessary for vegetative apex growth. | |
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