University of Reading Research Data Archive

Responses of faba bean (Vicia faba L.) yield parameters to heat stress treatments for five days during floral development and anthesis

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Experiments were conducted over two years to quantify the response of faba bean (Vicia faba L.) to heat stress. Potted winter faba bean plants (cv. Wizard) were exposed to temperature treatments (18/10; 22/14; 26/18; 30/22; 34/26°C day/night) for five days during floral development and anthesis. Developmental stages of all flowers were scored prior to stress, plants were grown in exclusion from insect pollinators to prevent pollen movement between flowers, and yield was harvested at an individual pod scale, enabling effects of heat stress to be investigated at a high resolution. Susceptibility to stress differed between floral stages, flowers were most affected during initial green-bud stages. Yield and pollen germination of flowers present before stress showed threshold relationships to stress, with lethal temperatures (t50) ~28°C and ~32°C, while whole plant yield showed a linear negative relationship to stress with high plasticity in yield allocation, such that yield lost at lower nodes was partially compensated at higher nodal positions. Faba bean has many beneficial attributes for sustainable modern cropping systems but these results suggest that yield will be limited by projected climate change, necessitating the development of heat tolerant cultivars, or improved resilience by other mechanisms such as earlier flowering times.

Resource Type: Dataset
Creators: Bishop, Jacob ORCID logoORCID:
Contributors: Potts, Simon and Jones, Hannah
Rights-holders: Jacob Bishop
Data Publisher: University of Reading
Publication Year: 2016
Data last accessed: 12 July 2024
Metadata Record URL:
Organisational units: Life Sciences > School of Agriculture, Policy and Development > Biodiversity, Crops and Agroecosystems Division- DO NOT USE
Life Sciences > School of Agriculture, Policy and Development > Department of Crop Science
Participating Organisations: University of Reading
Keywords: Vicia faba, faba bean, yield, heat stress, abiotic stress, climate change
Data Availability: OPEN


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