scholarly journals Effects of water deficit and rehydration on the polar lipid and membranes resistance leaves of Phaseolus vulgaris L. cv. Pérola

2008 ◽  
Vol 51 (2) ◽  
pp. 361-367 ◽  
Author(s):  
Raimundo Rômulo Martins Júnior ◽  
Micheline Soares Costa Oliveira ◽  
Maria Ary Baccache ◽  
Fernando Monteiro de Paula

Bean leaves (Phaseolus vulgaris L.) cv. Pérola were used to evaluate the water deficit effects in polar lipids composition and in the electric conductivity. The results showed that the water deficiency a effected in the electrolytes loss which increased gradually in response to water deficit. This suggested a compartimentalization loss, due to the structural cellular membranes elements degradation. Total lipids contents decreased by reason of the water stress action. The polyunsaturated fatty acid contents (linoleic and linolenic acids) suffered a decrease while saturated fatty acid (palmitic and stearic acids) increased. The imbalance in the fatty saturated/unsaturated acid relation led to a reduction in the unsaturation index. The electrolytes loss increase related whith the to polyunsaturated fatty acid contents reduction suggested a larger dehydrated plants vulnerability, leading to a consequent loss in the productivity.

2010 ◽  
Vol 43 (4) ◽  
pp. 417-427 ◽  
Author(s):  
Cecilia B Peña-Valdivia ◽  
Adriana B Sánchez-Urdaneta ◽  
Joel Meza Rangel ◽  
Juana Juárez Muñoz ◽  
Rodolfo García-Nava ◽  
...  

Irriga ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 388-401
Author(s):  
Mara Rubia Mendes de Melo ◽  
Francielly Guieiro Gomes de Sousa ◽  
Renata Da Silva Cuba de Carvalho ◽  
Hélio Grassi Filho ◽  
Antonio Evaldo Klar

ÁGUA RESIDUÁRIA COMO ALTERNATIVA DE IRRIGAÇÃO EM DUAS CULTIVARES DE FEIJÃO     MARA RUBIA MENDES DE MELO1; FRANCIELLY GUIEIRO GOMES DE SOUSA2; RENATA DA SILVA CUBA DE CARVALHO3; HÉLIO GRASSI FILHO4 E ANTONIO EVALDO KLAR5   1 Doutoranda, Programa de Pós- graduação em Agronomia, Departamento de Produção e Melhoramento Vegetal. Faculdade de Ciências Agronômica, Universidade Estadual Paulista (UNESP), Rua José Barbosa de Barros, 1780. CEP: 18.610-307, Botucatu-SP - Brasil. E-mail: [email protected]. 2 Doutoranda, Programa de Pós- graduação em Agronomia – Irrigação e Drenagem, Faculdade de Ciências Agronômica, Universidade Estadual Paulista (UNESP), Avenida Universitária, 3780, CEP 18610-034, Altos do Paraíso, Botucatu-SP, [email protected]. 3 Doutora, Programa de Pós-graduação em Agronomia – Irrigação e Drenagem, Faculdade de Ciências Agronômica, Universidade Estadual Paulista (UNESP), Avenida Universitária, 3780, CEP 18610-034, Altos do Paraíso, Botucatu-SP, Brasil, [email protected]. 4 Professor Titular do Departamento de Solos e Recursos Ambientais da Faculdade de Ciências Agronômicas, Universidade Estadual Paulista (UNESP), Avenida Universitária, 3780, CEP 18610-034, Altos do Paraíso, Botucatu-SP, Brasil, hé[email protected]. 5 Professor Emérito do Departamento de Engenharia Rural da Faculdade de Ciências Agronômicas, Universidade Estadual Paulista (UNESP), Avenida Universitária, 3780, CEP 18610-034, Altos do Paraíso, Botucatu-SP, Brasil. E-mail: [email protected].     1 RESUMO   O objetivo foi estudar o efeito do déficit hídrico em duas cultivares de feijão (Phaseolus vulgaris L.), nas fases vegetativa e reprodutiva, associado com o uso de água de reuso, utilizando esquema fatorial 2x2x3. Foram avaliados três fatores:1) a utilização de dois tipos de água para irrigação -potável (P) e residuária (R), 2) duas cultivares de feijão (IAC imperador (C1) e TAA Dama (C2)) e 3) os regimes hídricos empregados, sendo a) Testemunha: mantendo-se o solo na capacidade de campo, cujo valor foi -10kPa, b) Estresse 1: com deficiência hídrica na fase vegetativa; c) Estresse 2: deficiência hídrica na fase reprodutiva. Foram feitas avaliações de crescimento e de biomassa. Ocorreu interação tripla dos fatores somente para a variável altura de plantas. Os três fatores separadamente interferiram no desenvolvimento do feijoeiro, principalmente no fim do ciclo. O estresse hídrico nas fases vegetativa e reprodutiva influenciou em praticamente todas as avaliações realizadas, interferindo de forma negativa no desenvolvimento da cultura.  Para as cultivares, também ocorreram diferenças nos caracteres de crescimento e de biomassa vegetal. Quanto ao fator água, houve efeito nos parâmetros altura e massa da matéria seca, sendo que a água potável proporcionou valores maiores que a água residuária.     Palavras chaves: Água de reúso, irrigação, deficiência hídrica, Phaseolus vulgaris L..     MELO, M. R. M.; SOUSA, F. G. G.; CARVALHO, R. S. C.; GRASSI FILHO, H.; KLAR, A. E. WASTE WATER AS IRRIGATION ALTERNATIVE IN TWO BEAN CULTIVARS     2 ABSTRACT   The objective was to study the effect of water deficit in two bean cultivars (Phaseolus vulgaris L.), in the vegetative and reproductive phases, associated with the use of reuse water, using a 2x2x3 factorial scheme. Three factors were evaluated: 1) the use of two types of water for irrigation -potable (P) and waste (R), 2) two bean cultivars (emperor IAC (C1) and Dama TAA (C2)) and 3) the water regimes employed, a) Control: keeping the soil in the field capacity, whose value was -10kPa, b) Stress 1: with water deficiency in the vegetative phase; c) Stress 2: water deficiency in the reproductive phase. Growth and biomass evaluations were made. Triple interaction of the factors occurred only for the variable plant height. The three factors separately interfered with the development of common bean, especially at the end of the cycle. Water stress in the vegetative and reproductive phases influenced practically all evaluations, interfering negatively with the development of the crop.  For the cultivars, there were also differences in growth and plant biomass traits. Regarding the water factor, there was an effect on the parameters height and mass of dry matter, and the drinking water provided values higher than those obtained with wastewater.     Keywords: Reuse water, irrigation, water deficit, Phaseolus vulgaris L..


2006 ◽  
Vol 18 (3) ◽  
pp. 407-411 ◽  
Author(s):  
Mauro G. dos Santos ◽  
Rafael V. Ribeiro ◽  
Marcelo G. Teixeira ◽  
Ricardo F. de Oliveira ◽  
Carlos Pimentel

Two common bean cultivars were grown in pots under greenhouse conditions. Plants were submitted to a foliar Pi spray two days before suspending irrigation, what enhanced net CO2 assimilation rate of Ouro Negro cultivar but did not change significantly the photosynthesis of Carioca cultivar under both water deficit and rehydration periods. The results revealed that a foliar Pi spray induced an up-regulation of photosynthesis in common bean under mild water deficit, with this effect being genotype-dependent.


Author(s):  
Lauricio Endres ◽  
José L. de Souza ◽  
Iedo Teodoro ◽  
Paula M. G. Marroquim ◽  
Claudiana M. dos Santos ◽  
...  

The purpose of the present study was to analyze gas exchanges in leaves and the parameters of productivity of beans (Phaseolus vulgaris, L.) submitted to two water deficiency periods during which three water regimes were employed: W1 (1,0 ETo during the entire plant cycle); W2 (1,0 ETo up to the flowering period and irrigation interruption from the 37 to the 51st day following sowing, and W3 (in addition to the reproductive phase, water deficit was also applied during the vegetative stage). Photosynthesis was one of the main physiological factors affected by water deficit. This was not only caused by the stomata closure, but also by carboxilation reduction due to metabolic damage. This effect was, however, offset 24 h after rehydration. During flowering, the water deficit caused crop productivity to drop significantly, reducing the number of pods and the number of seeds per pod, independently of the water deficit during the vegetative stage. The weight of 100 seeds however, was the same regardless of treatment. These results suggest that the water deficit caused the reduction of photo-assimilates, which affected grain productivity. Nevertheless, once properly formed, seeds developed totally; a strategy of the plant to produce less seeds under stress, but viable to perpetuate the species.


1995 ◽  
Vol 107 (4) ◽  
pp. 1119-1128 ◽  
Author(s):  
A. A. Covarrubias ◽  
J. W. Ayala ◽  
J. L. Reyes ◽  
M. Hernandez ◽  
A. Garciarrubio

2009 ◽  
Vol 23 (12) ◽  
pp. 1792-1800 ◽  
Author(s):  
Cyril Girardin ◽  
Daniel P. Rasse ◽  
Philippe Biron ◽  
Jaleh Ghashghaie ◽  
Claire Chenu

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