Absorption and mobility of radio-labelled calcium in chili pepper plants and sweet cherry trees

Bonomelli, Claudia and Alcalde, Carolina and Aguilera, Camila and Videla, Ximena and Rojas-Silva, Ximena and Nario, Adriana and Fernandez Fernandez, Maria Victoria (2021). Absorption and mobility of radio-labelled calcium in chili pepper plants and sweet cherry trees. "Scientia Agricola", v. 78 (n. 6); pp. 1-7. ISSN 1678-992X. https://doi.org/10.1590/1678-992X-2020-0092.

Description

Title: Absorption and mobility of radio-labelled calcium in chili pepper plants and sweet cherry trees
Author/s:
  • Bonomelli, Claudia
  • Alcalde, Carolina
  • Aguilera, Camila
  • Videla, Ximena
  • Rojas-Silva, Ximena
  • Nario, Adriana
  • Fernandez Fernandez, Maria Victoria
Item Type: Article
Título de Revista/Publicación: Scientia Agricola
Date: January 2021
ISSN: 1678-992X
Volume: 78
Subjects:
Freetext Keywords: fertilizers; fertilizer application methods; horticultural crops; plant nutrition; radioisotopes
Faculty: E.T.S.I. Montes, Forestal y del Medio Natural (UPM)
Department: Sistemas y Recursos Naturales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Calcium (Ca) is often supplied to crop species to prevent the occurrence of Ca–related disorders. Mechanisms of Ca absorption and transport are not fully understood and the effectiveness of root and/or foliar Ca fertilization may be variable. To characterize the rate of Ca absorption and transport, trials were developed with chili pepper and sweet cherry plants, using 45CaCl2 as a tracer. The Ca treatments supplied were: (1) No 45Ca (control); (2) 45Casoil application; (3) 45Casupply to basal leaves, and(4) 45Ca application to apical leaves. After two months, plants were harvested for biomass and Ca content determination. The recovery of 45Ca in different plant parts was measured with a liquid scintillation counter and leaf traits were observed by scanning electronic microscopy. In general, the highest 45Ca concentrations were recovered in treated organs, while root applications led to highest 45Ca translocation rates, which varied between chili pepper and cherry plants. For chili pepper, 45Ca applied to the soil was detected mainly in roots (44 %) followed by leaves (36.6 %) stems (17.4 %) and fruits (2 %). In sweet cherry trees, soil–applied 45Ca was principally recovered in roots (45.3 %), shoots (28.5 %), leaves (14.3 %) and trunks (11.9 %). The results provide evidence of increased absorption of root–applied Ca, as well as different degrees of Ca mobility between species. Foliar application led to major Ca increases in treated leaves, with Ca transported to other plant organs after apical leaf Ca supply chiefly in cherry trees.

More information

Item ID: 65522
DC Identifier: http://oa.upm.es/65522/
OAI Identifier: oai:oa.upm.es:65522
DOI: 10.1590/1678-992X-2020-0092
Official URL: https://www.scielo.br/scielo.php?pid=S0103-90162021000601403&script=sci_arttext
Deposited by: Memoria Investigacion
Deposited on: 24 Nov 2020 09:35
Last Modified: 24 Nov 2020 09:35
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