Comparative study gas exchange and photosynthetic parameters in two leaf types of wild and domesticated bean (Phaseolus vulgaris L.) [Estudio comparativo de intercambio gaseoso y parámetros fotosintéticos en dos tipos de hojas de frijol (P
Por:
López Herrera M., Peña Valdivia C.B., Aguirre Rivera J.R., Trejo López C., López Escamilla A.L.
Publicada:
1 ene 2007
Categoría:
Agricultural and Biological Sciences (miscellaneous)
Resumen:
The aim of this study was to compare the gas exchange and some parameters of photosynthesis in primary and tripholiolate leaf of wild and domesticated common bean (Phaseolus vulgaris L.) during early vegetative stage, with de finality of show the photosynthetic efficiency of wild common bean. Two wild common bean samples from Durango and Tlaxcala, Mexico, and the cultivars Amarillo and Bayo Mecentral were cultivated under greenhouse conditions. Stomatal conductance, CO2 assimilation net rate, leave temperature, transpiratory rate, chlorophyll content, and some parameters of the fluorescence of the chlorophyll were evaluated. There were statistical interaction between the leave type and common bean variant (wild common bean from Durango and Tlaxcala, México, and the cultivars Amarillo and Bayo Mecentral) for chlorophyll a and b, the a/b index, beside initial, variable and maxim chlorophyll fluorescence. A high heterogeneity between and within wild samples, independently of its origin was observed, the heterogeneity was observed also among the cultivars (Amarillo and Bayo Mecentral), id est, a wide interspecific (among species) and intraspecific (within species) variability was found. It was concluded that primary and tripholiolate leaf in wild and domesticated variants growing in homogeneous environment show significant differences in physiological characters, all of them are diverse between and within wild variants and wild and domesticates variants evaluated, and conduce to significant differences in PN.
Filiaciones:
López Herrera M.:
Laboratorio de Morfofisiología Vegetal, Centro de Investigaciones Biológicas (CIB), Ciudad Universitaria, Carretera Pachuca-Tulancingo s/n, México. CP 42184, Spain
Peña Valdivia C.B.:
Botánica, Instituto de Recursos Naturales (IRENAT), Colegio de Postgraduados, Carretera México-Texcoco km 35.5, Montecillo, México. CP 56230, Mexico
Aguirre Rivera J.R.:
Instituto de Investigación en Zonas Desérticas, Universidad Autónoma de San Luis Potosí (UASLP), Altair 200, Col. del Llano, San Luis Potosí, S.L.P. México. 78377, Mexico
Trejo López C.:
Botánica, Instituto de Recursos Naturales (IRENAT), Colegio de Postgraduados, Carretera México-Texcoco km 35.5, Montecillo, México. CP 56230, Mexico
López Escamilla A.L.:
Laboratorio de Morfofisiología Vegetal, Centro de Investigaciones Biológicas (CIB), Ciudad Universitaria, Carretera Pachuca-Tulancingo s/n, México. CP 42184, Spain
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