Carbon-13 turnover in 'roxo de valinhos' fig trees
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Data
2011-06-01
Autores
da Silva, Andrea Carvalho
de Souza, Adilson Pacheco
Ducatti, Carlos [UNESP]
Leonel, Sarita [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Soc Brasileira Fruticultura
Resumo
The aim of this study was to assess carbon-13 turnover in different organs of the fig tree, 'Roxo de Valinhos' cultivar. The experiment was carried out in an orchard at School of Agronomical Sciences, FCA/UNESP, Botucatu Campus, State of São Paulo, Brazil. The main photosynthetically active leaf was previously determined based on gas exchanges by means of an open portable photosynthesis system, IRGA. That leaf was placed in a chamber where the enriched gas injection occurred. The leaf enrichment time was 30 minutes. Treatments were constituted of seven fig trees removed from the soil after: 6; 24; 48; 72; 120; 168 and 360 hours of enrichment using (13)C, and their parts were sectioned into: apical bud, young leaves, adult leaves (photosynthetically active), lateral sprouts, fruits, and branch. The results allowed the establishment of the carbon-13 metabolism sequence in the studied parts: Young leaves > Fruits > Sprouts > Adult leaves > Apical bud > branch > Labeled leaf. 'Roxo de Valinhos' fig trees, had (13)C turnover of 24 hours and carbon-13 half-time shorter than 11 hours.
Descrição
Palavras-chave
Ficus carica L., phisiology, carbohydrates, turnover
Como citar
Revista Brasileira de Fruticultura. Jaboticabal Sp: Soc Brasileira Fruticultura, v. 33, n. 2, p. 660-665, 2011.