BECAS
GONZALEZ Daniela Alejandra
artículos
Título:
Evaluation of Photosynthetic Capacity and Grain Yield of the Sea Level Quinoa Variety Titicaca Grown in a Highland Region of Northwest Argentine
Autor/es:
GONZALEZ, JUAN ANTONIO; SVEN E. JACOBSEN; SEBASTIÁN E. BUEDO; LUIS E. ERAZZÚ; DANIELA A. GONZALEZ
Revista:
Middle East Journal of Applied Sciences
Editorial:
Current Research Web
Referencias:
Año: 2020 vol. 9 p. 888 - 900
Resumen:
Photosynthetic characterization of the quinoa cultivar Titicaca grown at the Encalilla site (1995 m asl), a high mountain valley of the Argentinean Northwest, is described in this study. Titicaca cultivar, bred in Denmark from Chilean and Peruvian parenteral lines, is a promising short cycle cultivar and daylength neutral photoperiod. Results showed that maximal photosynthetic CO2 assimilation (Amax) and stomatal conductance (gs) were similar to other quinoa varieties. However, carboxilation capacity and leaf transpiration (E) were significantly higher in Titicaca cultivar compared with other quinoa cultivars grown in the same place. Assimilation of CO2 and stomatal conductance exhibited a strong correlation, like that occurs between (E) and (gs). Light saturation point (LSP) and light compensation point (LCP) were higher in relation to other quinoa cultivars. Grain yield of 2.35 and 2.51 g/plant was recorded and indicating a well adaptation to arid climatic conditions of the Argentinean Northwest region. The highest value of UV protective pigments found in Titicaca will be explained by solar irradiance in the grown area in relation to Denmark conditions. Grain yield, harvest index and some physiological parameters suggested a good adaptation of the Titicaca quinoa cultivar to high mountain valleys of the Argentina Northwest. This means that Titicaca may be considered as a good alternative for farmers in order to get similar production in less time