Data/hora: 12/06/2024 14:12:03

Provedor de dados: | 86
País: | Brazil
Título: | Effects of soil water depletion on the water relations in tropical kudzu
Autores: | Pereira-Netto,Adaucto Bellarmino de; Magalhães,Antonio Celso Novaes de; Pinto,Hilton Silveira.
Data: | 1999-07-01
Ano: | 1999
Palavras-chave: | Cover crop; Ecophysiology; Forage; Leguminosae; Pueraria phaseoloides; Water deficit.
Resumo: | Tropical kudzu (Pueraria phaseoloides (Roxb.) Benth., Leguminosae: Faboideae) is native to the humid Southeastern Asia. Tropical kudzu has potential as a cover crop in regions subjected to dryness. The objective of this paper was to evaluate the effect of soil water depletion on leaflet relative water content (RWC), stomatal conductance (g) and temperature (T L) in tropical kudzu. RWC of waterstressed plants dropped from 96 to 78%, following a reduction in SWC from 0.25 to 0.17 g (H2O).g (dry soil)-1.Stomatal conductance of stressed plants decreased from 221 to 98 mmol.m-2.s-1, following the reduction in soil water content (SWC). The day after re-irrigation, g of water stressed plants was 15% lower than g of unstressed plants. Differences in T L between waterstressed and unstressed plants (deltaT L) rose linearly from 0.1 to 2.2ºC following progressive water deficit. RWC and T L of waterstressed plants paralled RWC and T L of unstressed plants the day after reirrigation. The strong decrease in SWC found in this study only induced moderate water stress in tropical kudzu. In addition, tropical kudzu recover rapidly from the induced water stress after the re-irrigation.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700006

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X1999000700006
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.34 n.7 1999
Fonte: | info:eu-repo/semantics/openAccess