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Growth and phenology of three Andean potato varieties (Solanum tuberosum L.) under water stress

Rodríguez P., Loyla and Sanjuanelo C., Danny and Ñústez L., Carlos Eduardo and Moreno-Fonseca, Liz Patricia (2016) Growth and phenology of three Andean potato varieties (Solanum tuberosum L.) under water stress. Agronomía Colombiana, 34 (2). pp. 141-154. ISSN 2357-3732

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Resumen

The water-deficit stress has a negative effect on the growth and development of plants, reducing the yield of crops. This study evaluated the effect of a water deficit on the growth and phenology of potato (Solanum tuberosum L.) varieties Diacol Capiro, Pastusa Suprema and Esmeralda. Plants that were starting tuberization were subjected to a water deficit by suspension of irrigation until reaching a foliar water potential of -2.0 MPa; later the plants were re-irrigated and recovered. The water deficit decreased the flowering time in ‘Diacol Capiro’, the development of leaves and maturation of fruits in ‘Esmeralda’ and the development of leaves and formation of lateral shoots in ‘Pastusa Suprema’. In the three varieties, the water deficit did not induce a significant reduction in the stem length, the number of leaves per stem and per site or the number of main stems per site. The plants demonstrated responses related to escape and evasion mechanisms during the water deficit through the adjustment of the metabolism in order to reduce the duration of the phenological stages. The duration of the biological cycle for the three varieties was 148 days, with a requirement of 1,850 GDD. There were no differences in the potential yield, probably due to the short duration of the stress period. The three varieties demonstrated plasticity when modifying the phenology in response to the drought period.

Tipo de documento:Artículo - Article
Palabras clave:drought, plant development, stress escape, growing degree-day
Temática:5 Ciencias naturales y matemáticas / Science > 57 Ciencias de la vida; Biología / Life sciences; biology
5 Ciencias naturales y matemáticas / Science > 58 Plantas / Plants
Unidad administrativa:Revistas electrónicas UN > Agronomía Colombiana
Código ID:55000
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :12 Dec 2016 22:06
Ultima modificación:23 Junio 2017 20:42
Ultima modificación:23 Junio 2017 20:42
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