Adaptação do feijoeiro comum (Phaseolus vulgaris L.) à seca

Guimarães, C. M.; Stone, L. F.; Brunini, Orivaldo

doi:10.1590/s1415-43662006000100011

Cited by 34 publications

(27 citation statements)

References 6 publications

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“…Behavior differences were found only under drought, where the leaf Ψ w varied between -0.73 and -1.20 MPa. Guimarães et al (2006) registered minimum values of 0.97 and -1. 07 MPa for leaf Ψ w evaluated in the period of maximum intensity of solar radiation in two bean cultivars subjected to water stress during the reproductive period.…”

Section: Resultsmentioning

confidence: 99%

Análise da capacidade combinatória em feijoeiro comum submetido ao déficit hídrico

et al. 2015

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This paper aimed at selecting parents to compose a common bean breeding program for drought tolerance. General and specific combining abilities were evaluated under controlled conditions, using drought tolerant parents (BAT 477 and SEA 5), elite cultivars developed at IAC (IAC Alvorada and IAC Carioca Tybatã) and their progenies obtained from a complete diallel, including the reciprocals. Sowing was done in soil following a randomized block design with three replications for both experiments, the control with irrigation and the drought stress experiment imposed from pre-flowering stage. Plants remained under drought stress for 30 days. Physiological and morphological traits as well as yield components and grain yield were evaluated, detecting additive and non-additive effects controlling these traits. The parents used in this study had contributed in different proportions in the crosses they participated in. Regarding the drought stress condition in the pre-flowering stage, the parents SEA 5 and IAC Alvorada presented greater positive effects for the general combining ability for the yield and weight of one thousand seeds, whereas the parent SEA 5 also showed a positive effect for the number of seeds per pod, suggesting the increase of these traits in the crosses they participated in. The hybrid combinations SEA 5 × IAC Alvorada showed a positive result for grain yield, related to the higher positive effect for specific combining ability and because they have as parents the cultivars which confer the best positive values for general combining ability.

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Section: Resultsmentioning

confidence: 99%

Análise da capacidade combinatória em feijoeiro comum submetido ao déficit hídrico

et al. 2015

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“…FAO (2000) reported many cases where DI was a beneficial impact on water savings. In SA, deficit irrigation techniques has been investigated for olives (Sellés et al, 2006), grapevine (Ferreyra et al, 2003), Chilean tomato (Maldonado et al, 2003) in Chile; maize (Bergamaschi et al, 2006), sugarcane , irrigated coffee (Fernandes et al, 2000), sorghum (Peiter and Carlesso, 1996), beans (Phaseolus vulgaris) (Calvache et al, 1997;Guimarães et al, 2006), garlic (Macêdo et al, 2006), watermelon (Citrullus lanatus) (Andrade Júnior et al, 2001) in Brazil; quinoa in Bolivia (Geerts et al, 2006); sugar cane in Argentina (Romero et al, 2006).…”

Section: Deficit Irrigation As a Water Saving Practicementioning

confidence: 99%

Irrigation Water Management in Latin America

Oliveira

Trezza

Holzapfel³

et al. 2009

Chilean J. Agric. Res.

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Latin American countries show a great potential for expanding their irrigated areas. Irrigation is important for strengthening local and regional economy and for enhancing food security. The present paper aimed at providing a brief review on key aspects of irrigation management in Latin America. Poor irrigation management can have great impact on crop production and on environment while good management reduces the waste of soil and water and help farmers maximizing their profits. It was found that additional research is needed to allow a better understanding of crop water requirements under Latin American conditions as well as to provide farmers with local derived information for irrigation scheduling. The advantages of deficit irrigation practices and the present and future opportunities with the application of remote sensing tools for water management were also considered. It is clear that due to the importance of irrigated agriculture, collaborative work among Latin American researchers and institutions is of paramount importance to face the challenges imposed by a growing population, environment degradation, and competition in the global market.

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“…Guimarães et al (2006) reported that a water-deficit tolerant common bean cultivar, subjected to water-stress conditions, showed higher leaf-water potential and lower stomatal diffusive resistances than a susceptible cultivar.…”

Section: Introductionmentioning

confidence: 99%

Physiological parameters to select upland rice genotypes for tolerance to water deficit

Guimarães

Stone

Castro

et al. 2015

Pesq. agropec. bras.

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-The objective of this work was to evaluate the feasibility of using physiological parameters for water deficit tolerance, as an auxiliary method for selection of upland rice genotypes. Two experiments -with or without water deficit -were carried out in Porangatu, in the state of Goiás, Brazil; the water deficit experiment received about half of irrigation that was applied to the well-watered experiment. Four genotypes with different tolerance levels to water stress were evaluated. The UPLRI 7, B6144F-MR-6-0-0, and IR80312-6-B-3-2-B genotypes, under water stress conditions, during the day, showed lower stomatal diffusive resistance, higher leaf water potential, and lower leaf temperature than the control. These genotypes showed the highest grain yields under water stress conditions, which were 534, 601, and 636 kg ha -1 , respectively, and did not differ significantly among them. They also showed lower drought susceptibility index than the other genotypes. 'BRS Soberana' (susceptible control) was totally unproductive under drought conditions. Leaf temperature is a easy-read parameter correlated to plant-water status, viable for selecting rice genotypes for water deficit tolerance.Index terms: Oryza sativa, leaf diffusive resistance, leaf temperature, leaf-water potential. Parâmetros fisiológicos para selecionar genótipos de arroz quanto à tolerância ao deficit hídricoResumo -O objetivo deste trabalho foi avaliar a possibilidade de uso de parâmetros fisiológicos de tolerância à deficiência hídrica como método auxiliar na seleção de genótipos de arroz de terras altas. Dois experimentosum com e outro sem deficit hídrico -foram realizados em Porangatu, GO; o com deficit hídrico recebeu cerca da metade da irrigação que foi aplicada ao tratamento bem irrigado. Avaliaram-se quatro genótipos com diferentes níveis de tolerância ao estresse hídrico. Os genótipos UPLRI 7, B6144F-MR-6-0-0 e IR80312-6-B-3-2-B, em condições de estresse hídrico ao longo do dia, apresentaram menor resistência difusiva estomática, maior potencial de água nas folhas e menor temperatura das folhas do que a testemunha. Esses genótipos apresentaram as maiores produtividades em condições de deficiência hídrica, que foram respectivamente 534, 601 e 636 kg ha -1 , e não diferiram significativamente entre si. Eles também apresentaram menores índices de susceptibilidade à seca do que os outros genótipos. 'BRS Soberana' (testemunha suscetível) foi totalmente improdutiva em condições de deficiência hídrica. A temperatura das folhas é um parâmetro de fácil leitura correlacionado à condição hídrica da planta, viável para selecionar genótipos de arroz quanto à tolerância ao deficit hídrico.Termos para indexação: Oryza sativa, resistência difusiva foliar, temperatura foliar, potencial de água na folha.

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Adaptação do feijoeiro comum (Phaseolus vulgaris L.) à seca

Cited by 34 publications

References 6 publications

Análise da capacidade combinatória em feijoeiro comum submetido ao déficit hídrico

Análise da capacidade combinatória em feijoeiro comum submetido ao déficit hídrico

Irrigation Water Management in Latin America

Physiological parameters to select upland rice genotypes for tolerance to water deficit

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