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Asian Journal of Plant Sciences
Year: 2004  |  Volume: 3  |  Issue: 4  |  Page No.: 498 - 507

Effect of Partial and Complete Ringing on Carbohydrates, Mineral Content and Distribution Pattern 13C-photoassimilates in Young Peach Trees

A.B.M. Sharif Hossain, F. Mizutani and Justus M. Onguso    

Abstract: Effects of partial and complete ringing in the trunk on overall nutrient status of peach (Prunus persica Batsch. cv. `Hikawahakuho`) trees were examined by using one-year-old trees. The partial ringing comprised removal of 2 cm length bark and remaining 2 mm strip whereas complete ringing no remaining strip. Organic (sugar and starch) and inorganic nutrient content in leaves, stems and roots were monitored for eight weeks after ringing. The treatment reduced overall reduction in sugar and starch content in all plant parts. Each sugar component also showed similar trends. The N and Ca content in the above ground parts were lower in the ringed plants than control but the reverse was true in the roots. On the other hand, P, K and Mg content in all plant parts were declined by the treatment. Partial ringing prevented the translocation of 13C-photosynthates from the above ground parts to roots although entire inhibition was apparent in the complete ringing. Such reduction in energy sources of the roots seemed to affect overall plant nutrition which leads to small sized trees.

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