2006
DOI: 10.1590/s0100-84042006000400019
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Fotossíntese e relações hídricas de duas cultivares jovens de seringueira

Abstract: -(Photosynthesis and water relations of two young rubber tree cultivars). This work aimed to compare some aspects of the leaf-gas exchange and water balance of two field grown cultivars (Fx 3864 e RRIM 600) of the rubber tree. Measurements were carried out for two months between the wet and dry seasons of 2001 and 2002. Integrated values of gas exchange showed a decrease in photosynthesis (32% and 22%), transpiration (44% and 38%), and stomatal conductance (29% and 17%) for RRIM 600 and Fx 3864, respectively. … Show more

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Cited by 2 publications
(1 citation statement)
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“…For brazilwood plants transferred to direct sun radiation it was observed an increase in VPDleaf-to-air and gradual reduction of A during the 192 h of direct sun exposure. The fast reduction of E in the first 3 h of exposure to sunlight as related to net photosynthetic rate is an indicative of an efficient mechanism of adaptation aiming to control the reduction of loss of water (Oliveira et al, 2002;Cavalcante and Conforto, 2006). This can be confirmed by the reduction of WUE associated to the decreasing values of A during the first 48 h after transfer to sunlight, after which differences intensified up to 192 h ( Figure 3A).…”
Section: Resultsmentioning
confidence: 73%
“…For brazilwood plants transferred to direct sun radiation it was observed an increase in VPDleaf-to-air and gradual reduction of A during the 192 h of direct sun exposure. The fast reduction of E in the first 3 h of exposure to sunlight as related to net photosynthetic rate is an indicative of an efficient mechanism of adaptation aiming to control the reduction of loss of water (Oliveira et al, 2002;Cavalcante and Conforto, 2006). This can be confirmed by the reduction of WUE associated to the decreasing values of A during the first 48 h after transfer to sunlight, after which differences intensified up to 192 h ( Figure 3A).…”
Section: Resultsmentioning
confidence: 73%