Chilling and heat requirements in the flower and vegetative buds of some local almond cultivars

Naseri, Somayeh; Gholami, Mahdiyeh; Baninasab, Bahram

doi:10.1007/s00704-023-04561-7

Cited by 2 publications

(1 citation statement)

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“…As already stated above, apart from the fulfillment of chilling requirements, buds also need several growing degree hours (GDH-hourly mean temperatures minus 4.5 • C) [34] to leave eco-dormancy. There are cases where the chilling requirements were fulfilled and the days followed were characterized by temperatures high enough for the advancing of flowering [3] compared to the historical flowering time in the specific area [10,21,26], exposing sprouts and flowers to possible early spring frosts [3].…”

Section: Effect Of Climate Change On Bud Dormancymentioning

confidence: 99%

Climate Change Challenges in Temperate and Sub-Tropical Fruit Tree Cultivation

Roussos

2024

Encyclopedia

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In the last few years, the world has experienced the impacts of climate change, such as elevated mean annual temperature, extreme weather events, drought, etc. Among living organisms, perennial plant species are the ones mostly exposed to climate change impacts, as they may experience different extreme events within the same year, such as flooding during some periods and drought in summer months, extremely low temperatures in winter but excessively high temperatures in summer, etc. Climate change affects a range of physiological functions of temperate fruit and nut tree species, such as their phenophases, bud dormancy release and vernalization, pollination and fruit set, fruit growth and quality, as well as bud sprouting and growth initiation. Besides these, the impact of climate change on pests, diseases, and weeds may generate significant negative interactions with tree physiology, threatening food production, food safety, and human welfare. In the present manuscript, a general aspect of climate change impacts on fruits’ and nut trees’ physiological functions is described and commented on.

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Section: Effect Of Climate Change On Bud Dormancymentioning

confidence: 99%

Climate Change Challenges in Temperate and Sub-Tropical Fruit Tree Cultivation

Roussos

2024

Encyclopedia

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Ground Measurements and Remote Sensing Modeling of Gross Primary Productivity and Water Use Efficiency in Almond Agroecosystems

Gabaldón-Leal,

Sánchez-Virosta,

Doña

et al. 2024

Agriculture

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Agriculture plays a crucial role as a carbon sink in the atmosphere, contributing to a climate-neutral economy, which requires a comprehensive understanding of Earth’s complex biogeochemical processes. This study aims to quantify, for the first time, Gross Primary Productivity (GPP) and ecosystem water use efficiency (eWUE) in almond orchards during their vegetative phase. The study was conducted over six growing seasons (2017–2022) across two drip-irrigated commercial almond groves located in Albacete, SE Spain. Eddy covariance flux tower systems were used to measure Net Ecosystem Exchange (NEE) and evapotranspiration (ET), which were then used to calculate GPP and eWUE. A novel approach was developed to estimate eWUE by integrating the Normalized Difference Vegetation Index (NDVI), reference ET, and air temperature. The results show similar almond orchard carbon-fixing capacity rates to those of other natural and agro-ecosystems. Seasonal and interannual variability in GPP and eWUE were observed. The NDVI-ET combination proved to be effective for GPP estimations (regression coefficient of 0.78). Maximum carbon-fixing values were observed at ET values of around 4–5 mm/d. In addition, a novel method was developed to estimate eWUE from NDVI, reference ET and air temperature (RMSE of 0.38 g·C/kg·H2O). This study highlights the carbon capture potential of almond orchards during their vegetative phase and introduces a novel approach for eWUE monitoring, with the intention of underscoring their significance in a climate change context and to encourage further research.

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Chilling and heat requirements in the flower and vegetative buds of some local almond cultivars

Cited by 2 publications

References 61 publications

Climate Change Challenges in Temperate and Sub-Tropical Fruit Tree Cultivation

Climate Change Challenges in Temperate and Sub-Tropical Fruit Tree Cultivation

Ground Measurements and Remote Sensing Modeling of Gross Primary Productivity and Water Use Efficiency in Almond Agroecosystems

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