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| Rakocevic, Miroslava; Medrado, Moacir José Sales; Lavoranti, Osmir José. |
| A preliminary study was developed on leaf gas exchange properties of males and females in yerbamate (Ilex paraguariensis St. Hil.), planted in open growth conditions. The photosynthesic photon flux density (PPFD) on leaf level, stomatal conductance (gs), net photosynthesis (A), transpiration (E), and leaf temperature (Tl) was measured during the biennial production period: in the summer during the fruit ripening when there is a pause in its growth (January, February), spring sprouting (November) and autumn sprouting (March, Jun). The measurements have been taken in different tree crown positions (inside, exterior and tips). First indications of sex physiological dimorphism in yerba-mate have been shown. Conductance was superior on female plants, with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Light; Photosynthesis; Stomatal conductance; Temperature; Transpiration Condutância estomática; Fotossíntese; Luz; Temperatura; Transpiração. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/127 |
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| Rakocevic, Miroslava; Sturion, José Alfredo; Medrado, Moacir José Sales; Lavoranti, Osmir José; Mosele, Sérgio Henrique; Valduga, Alice Tereza. |
| The aims of this study were to estimate the genetic parameters for 59 half-sib progenies of maté under runing for formation, and to evaluate the ecophysiological properties for four progenies (P15, P18, P41 e 47) and two controls (P61 and P62), components of one maté breeding experiment combining rovenances and progenies, established in Erechim, RS. The ecophysiological properties (stomatal onductance (gs) - mol m-2s-1, net photosynthesis (A) - μmol CO2 m-2s-1, and transpiration (E) -mmol H2O - s-1) were measured during one year in five epochs (from September 2002 to August 2003). The variance omponents, genetic and phenotypic parameters and genetic values (for data of foliar mass collected in runing of formation) were obtained using a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic value; Heritability; Photosynthesis; Stomatal conductance; Transpiration. Condutância estomática; Fotossíntese; Herdabilidade; Transpiração; Valor genético.. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/229 |
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| Rakocevic, Miroslava; Medrado, Moacir José Sales; Lavoranti, Osmir José; Valduga, Alice Teresa. |
| The aim of this study was to assess the taste of beverage prepared from yerba-mate (Ilex paraguariensis) leaves, originated from male and female plants, by taking into account leaf gas exchange and the content of macro-and-trace-elements. Ecophysiological, chemical and sensorial properties were evaluated in one of the sprouting phases and in two fruit ripening phases. Male and female plants did not differ in fresh and dry matter production per plant, nor in the content of micro- and trace elements. However, female plants showed higher leaf net photosynthesis (A) and stomatal conductance (gs) than male plants. The beverage prepared with male plant leaves was less bitter than that prepared with female plant leaves, especially when leaves from the branch tips... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Photosynthesis; Productivity; Stomatal conductance; Bitterness; Trace elements Amargo; Condutância estomática; Fotossíntese; Macro-elementos; Micro-elementos; Produtividade.. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/131 |
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