Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/17492
Título: Estimativa da área foliar em diferentes estados fenológicos baseada em descritores alométricos de rosas de corte cv 'Red Naomi'
Autor: Costa, P. M.
Poças, I.
Alves, S.
Pereira, M.
Carvalho, S. M. P.
Cunha, M.
Palavras-chave: Allometry
Rosa hybrida
Leaf area
Non-destructive measurement
Modelling
Data: 2014
Citação: COSTA, P. M… [et al.] - Estimativa da área foliar em diferentes estados fenológicos baseada em descritores alométricos de rosas de corte cv 'Red Naomi'. In Jornadas Ibéricas de Horticultura Ornamental, VI, Valencia, Spain, 1‐3 Octubre 2014. ROCA FERRERFÁBREGA, Dolors …[et al.] (ed.) - Las Buenas Prácticas en la Horticultura Ornamental: Actas de Horticultura, nº 68. 2014. ISBN 978-84-617-3020-9. Cap. 3, p. 150-156
Resumo: A number of models for estimating leaf area (LA) are available in the literature, but these were frequently developed for a specific phase of the production (generally the harvest). This study aimed at estimating the LA in different phenological stages using non-destructive allometric measurements of cut rose cv 'Red Naomi' grown in soilless system. A statistical model was developed based on the following allometric measures: leaf length (LL), leaf width (LW), leaf position (LP), number of leaflets (NL) and different combinations of these parameters. The estimated model based on 176 leaves obtained from 20 stalks harvested at different developmental stages explained 92% of the LA variance (R2 = 0.92, n = 176, p < 0.000).This model includes the numerical position of the leaf on the stem (PRFn), ln (LL*LW) and NL as parameters, and the mean absolute difference between measured and estimated LA was less than 11%. It is concluded that the obtained model shows a high accuracy and reliability in the LA estimation in very diverse situations of crop phenology.
Peer review: yes
URI: http://hdl.handle.net/10400.14/17492
Aparece nas colecções:CBQF - Artigos em actas / Papers in proceedings

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