Water Status of Flower Buds and Leaves as Affected by High Temperature in Heat-Tolerant and Heat-Sensitive Cultivars of Snap Bean (Phaseolus vulgaris L.)
By T. Tsukaguchi, Y. Kawamitsu, H. Takeda, Katsumi Suzuki, Y. Egawa. 2003
98 citations recorded by the source corpus.
Abstract In snap bean {Phaseolus vulgaris L.), flower and pod abscission causes yield reduction under high-temperature conditions. A high temperature enhances transpiration and thus may induce temporal water deficiency in plants in the daytime. The objective of this study was to clarify the effect of a high temperature on the water status of floral organs at their most heat-sensitive stage. We compared the water potential and its components as well as gas exchange between the heat-tolerant cultivar, Haibushi, and heat-sensitive cultivar, Kentucky Wonder, grown under optimal (control) and high-temperature conditions. Haibushi showed higher pollen fertility under high temperature than Kentucky Wonder. Transpiration was enhanced under a high temperature, causing decrease of water potential in leaves and flower buds. The deterioration of water status in floral organs was larger in Kentucky Wonder than in Haibushi. We conclude that temporal deterioration of the water status in flower buds is one of the factors causing pollen damage.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/5e7c44f7c6e22c21004a2cd0504cc5e39c61eccb
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In Plant Science
Citations in the corpus
- Induction of Heat Stress Tolerance in Barley Seedlings by Pre-Sowing Seed Treatment with Glycinebetaine (2005, background): “Tsukaguchi et al. (2003) reported that exposure to heat stress induced a sharp increase in the leaf transpiration rate and deterioration of leaf water status of Snap bean.”
- Adaptation to High Temperature and Water Deficit in the Common Bean (Phaseolusvulgaris L.) during the Reproductive Period (2012, background): “Even short diurnal fluctuations in the plant’s water status [46] at the time of anthesis could adversely affect the development and function of its reproductive organs [24].”