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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
13/08/1992 |
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Data da última atualização: |
02/05/2023 |
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Autoria: |
BATTEN, D.; LLOYD, J.; McCONCHIE, C. |
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Afiliação: |
Tropical Fruit Research Station, NSW Agriculture and Fisheries, PO Box 72, alstonville, NSW 2477, Australia. |
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Título: |
Seasonal variation in stomatal responses of two cultivars of lychee (Litchi chinensis sonn.). |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Australian Journal of Plant Physiology, v.19, n.3, p.317-329, 1992. |
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ISSN: |
0310-7841 |
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Idioma: |
Inglês |
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Conteúdo: |
The effect of cultivar and environment on the stomatal conductance and plant water relations of lychee (Litchi chinensis sonn.) was investigated. Diurnal changes in stomatal conductance (gs) and water potentials (Psi1) were determined for leaves of irrigated trees of cv. 'Bengal' and cv. 'Kwai May Pink' between July and December 1990. Leaves of Bengal always had much higher gs than Kwai May Pink in winter, but as summer approached, this difference became less. Psi1 values at midday for Bengal were always much lower than for Kwai May Pink. The linear model, E = G(Psi1 - Psi soil), where E is transpiration rate and G is whole plant conductance, was found to be valid for nearly all the data sets collected. The values of G for Kwai May Pink were higher than for Bengal, especially in summer, and the average values of G (Bengal 4.1 and Kwai May Pink 6.3 mmol H2O m-2 s-1 MPa-1) indicate that the lychee has a relatively efficient water transport system compared with other fruit tree species. Laboratory measurements of the responses of these cultivars confirmed observed differences in gs in the field. The responses of each cultivar to irradiance (I), leaf temperature (T1) and leaf-air water vapour pressure deficit (D) were obtained and used to model the orchard data. |
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Palavras-Chave: |
Cultivar Bengal. |
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Thesagro: |
Sapindaceae. |
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Thesaurus Nal: |
Asia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01845naa a2200193 a 4500
001 1633642
005 2023-05-02
008 1992 bl uuuu u00u1 u #d
022 $a0310-7841
100 1 $aBATTEN, D.
245 $aSeasonal variation in stomatal responses of two cultivars of lychee (Litchi chinensis sonn.).$h[electronic resource]
260 $c1992
520 $aThe effect of cultivar and environment on the stomatal conductance and plant water relations of lychee (Litchi chinensis sonn.) was investigated. Diurnal changes in stomatal conductance (gs) and water potentials (Psi1) were determined for leaves of irrigated trees of cv. 'Bengal' and cv. 'Kwai May Pink' between July and December 1990. Leaves of Bengal always had much higher gs than Kwai May Pink in winter, but as summer approached, this difference became less. Psi1 values at midday for Bengal were always much lower than for Kwai May Pink. The linear model, E = G(Psi1 - Psi soil), where E is transpiration rate and G is whole plant conductance, was found to be valid for nearly all the data sets collected. The values of G for Kwai May Pink were higher than for Bengal, especially in summer, and the average values of G (Bengal 4.1 and Kwai May Pink 6.3 mmol H2O m-2 s-1 MPa-1) indicate that the lychee has a relatively efficient water transport system compared with other fruit tree species. Laboratory measurements of the responses of these cultivars confirmed observed differences in gs in the field. The responses of each cultivar to irradiance (I), leaf temperature (T1) and leaf-air water vapour pressure deficit (D) were obtained and used to model the orchard data.
650 $aAsia
650 $aSapindaceae
653 $aCultivar Bengal
700 1 $aLLOYD, J.
700 1 $aMcCONCHIE, C.
773 $tAustralian Journal of Plant Physiology$gv.19, n.3, p.317-329, 1992.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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