ISHS Acta Horticulturae 713: VI International Peach Symposium
SEASONAL CHANGES IN CALCIUM CONTENT IN EARLY AND LATE PEACH CULTIVARS |
| Authors: | M. Policarpo, V. Farina, G. Volpe, R.L. Bianco |
| Keywords: | dry matter, growth, nutrient, partitioning, roots, fruit |
| Abstract:
Seasonal calcium changes in peach [Prunus persica (L.) Batsch] tree organs of a very early (‘Flordastar’) and a very late (‘Tudia’) fruit ripening cultivar were assessed during a growing season. Four two-year old potted trees grafted on seedlings rootstocks, trained to central leader, were destructively harvested at 5-week intervals and Ca content was determined in each organ separately. In ‘Flordastar’, Ca seasonal changes followed similar trends with a peak between March and April in taproot and coarse roots, whereas it increased linearly in fine roots and leaves. In ‘Tudia’, Ca followed a quadratic trend with a maximum in September in coarse roots, a polynomial trend with a maximum in August-September in shoots, and a quadratic increase in leaves. Fruit Ca decreased non-linearly in both cultivars. | |
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