R. Ferreyra-Espada’s research while affiliated with Instituto de Investigaciones Agropecuarias and other places

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Publications (1)

Figura 1. Variación del diámetro del tronco y fases I, II y III del crecimiento de la baya (2004 a 2005). Figure 1. Variation in trunk diameter and berry growth phases I, II, and III (2004 to 2005).
Figura 4. Variación del diámetro del tronco y de la baya, y déficit de presión de vapor entre 118 y 120 DDB. Se indica la hora de inicio del período de recuperación del tronco y de la baya. El eje de las abscisas representa las horas transcurridas desde la medianoche del día 118 DDB.  
Growth relationships between trunk and grape berry using linear variable differential sensors in Vitis vinifera
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January 2008

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122 Reads

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4 Citations

Agrociencia

C. Silva-Contreras

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G. Sellés-Von Schouwen

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R. Ferreyra-Espada

Water transport in grape trunk and berries has been studied with several methods. However, there are no studies that simultaneously evaluate water transport in both organs. This study was conducted in the Aconcagua Valley (Chile) with the cultivar Crimson Seedless using electronic dendrometers. It was observed that trunk growth ceased at the beginning of berry coloring. At the beginning of berry growth stage II resistance to water flow increased; this was attributed to a change in the phloematic discharge in the berry from a symplastic to an apoplastic via. Thus, there are growth interactions among organs, contributing to the hypothesis of physiological interactions between the xylem and phloem during berry development. Also, there would be no xylem dysfunction while a flow of water predominates; this flow is governed by an osmotic gradient that maintains the water potential gradient between the berry and plant until harvest.

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Citations (1)

... The DE-1 M dendrometer uses a highly precise incremental LVDT (linear variable displacement transducer)-based sensor for monitoring micro-variations of the radii of tree stems in micron range which measures the output signal with variations of distance between the surface of tree stems and the end of the rod, which is anchored inside the tree stem. As the indices coming from the DE-1 M dendrometer allow investigators to detect the effects of irrigation rate and other environmental factors on water balance and growth of plants, it was initially applied to the study of agricultural fields (Selles et al. 2005;Silva-Contreras et al. 2008, 2012. Similarly, there are some studies using automatic point dendrometers in the continuous measurement of changes in plant diameter including growth dynamic and diurnal diameter changes, which can also provide signals documenting the response of trees to their environment in high temporal resolution (Biondi and Hartsough 2010;Wang et al. 2016). ...

Reference:

Precision monitoring of radial growth of trees and micro-climate at a Korean Fir (Abies koreana Wilson) forest at 10 minutes interval in 2016 on Mt. Hallasan National Park, Jeju Island, Korea
Growth relationships between trunk and grape berry using linear variable differential sensors in Vitis vinifera

Agrociencia

C. Silva-Contreras

·

·

G. Sellés-Von Schouwen

·

R. Ferreyra-Espada