ISHS Acta Horticulturae 721: V International Symposium on Mineral Nutrition of Fruit Plants
TRANSLOCATION OF BORON IN ALMOND TREES |
| Authors: | C. Sotomayor, J. Castro, V. De Pede, R. Ruiz |
| Keywords: | boron isotopes, boron mobility |
| Abstract:
Boron is generally considered to be phloem immobile in higher plants. However, recent information (Brown and Hu, 1996) shows that B may be mobile in almond tissues. This research examines the redistribution of isotopically-enriched B10 applied to mature leaves and flowers of ‘Non Pareil’ almond trees in a field experiment. Results indicated that a significant proportion of mature leaves where B was applied rapidly re-translocated to the growing fruits; 18% after 5 d and 27% after 10 d. B applications at full bloom indicated that 48% of B was recovered in fruitlets, 20% in the shoot bark and 14% in the leaves 40 d after application. These results confirm B mobility in this species. | |
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