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DIGITAL.CSIC
Article . 2010 . Peer-reviewed
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Caída de yemas de flor de melocotonero

Authors: Tabuenca Abadía, María de la Concepción;

Caída de yemas de flor de melocotonero

Abstract

[ES] Se observa la susceptibilidad a la caída de yemas de flor en una colección de 149 variedades de melocotonero. El fenómeno se presentó en muy distinto grado en los cinco años considerados, siendo relativamente pocas las variedades gravemente afectadas. Entre las variedades más susceptibles a la caída de yemas se encuentran algunas con pocas necesidades de frío invernal, mientras parecen no susceptibles otras variedades clasificadas entre las más exigentes en frío. Se estudia la influencia de distintos factores climáticos en la caída de yemas de flor de las variedades Bienvenido y Mayflower. El número total de horas bajo 7ºC acumuladas en cada uno de los inviernos en esta zona no está relacionado con la caída de yemas de flor; sin embargo, sí lo están las acumuladas en determinados períodos de tiempo. Esto puede interpretarse diciendo que es la época en que tienen lugar las horas bajo 7ºC lo que influye en la caída de yemas en flor. El aumento de las temperaturas mínimas, especialmente durante el período 16 enero-14 febrero, está más ligado con una mayor proporción de caída de yemas que el aumento de las temperaturas máximas. El aumento de las oscilaciones de temperatura del día a la noche a fin de otoño y principios de invierno parecen influir considerablemente en la caída de yemas de flor en las dos variedades estudiadas.

[EN] Flower bud drop records were made on 149 varieties of peaches during a 5 year period. The bud drop was most serious en 1970 and 1962, of intermediate severity in 1968 and 1969 and the buds did not drop in 1967. Those varieties of peaches which have a long rest period are usually not more susceptible to bud drop than others. Bud drop of two varieties, Bienvenido and Mayflower, was correlated with winter temperatures and number of hours of temperatures 7ºC or lower. Correlations with the accumulated hours of temperatures under 7ºC are negative, reflecting an inverse relationship with bud drop. The coefficients of greatest magnitude occur in the period 16 December-31 January. Chilling of higher efficiency would be particulary important during that period. Maximum temperatures were not significantly correlated but minimum temperatures were positively correlated. Furthermore, average minimum temperatures throughout the period 16 December - 28 February appear to be the most closely related. Correlation with diurnal variations of temperature are positive. The coefficients of greatest magnitude occur in the period 16 October - 31 December.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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