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Phloematic mobility of 10Boron in kiwifruit (Actinidia deliciosa) mixedshoots Ciencia e Investigación Agraria
Sotomayor,Carlos; Ruiz,Rafael; Muñoz,Luis.
Boron (B) is an essential micronutrient showing restricted mobility in plants, except in species that synthesize polyols. The ability of kiwifruit to mobilize B through phloem transport has not yet been confirmed, despite its ability to synthesize the polyol myo-inositol. This study examined kiwifruit plants in which boric acid enriched with the stable 10B isotope was applied to the distal leaves of mixed shoots with flowers. At 24, 72 and 144 h, both 10B-treated and un-treated leaves and flowers from treated shoots were sampled and subsequently analyzed via mass spectrometry to determine the resulting 11B/10B ratios. Control leaves and flowers showed a natural ratio, varying between 3.82 and 4.05. In contrast, the ratios in treated leaves were 1.57 at 24...
Tipo: Journal article Palavras-chave: Boron; Foliar absorption; Kiwifruit; Phloem mobility; Stable isotope.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300015
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