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- W4313592844 abstract "Genie chili pepper (Capsicum annuum L. var. genie), a widely cultivated Indonesian bird’s eye chili variety, has a typical pungent taste that is favorable for local cuisines. Among abiotic stresses, drought is a major constraint to crop growth and productivity. Genie has been described as a moderately drought tolerant chili, but little is known about the physiological responses in this genotype to water shortage stress. This study aimed to investigate the vegetative growth, in particular, the leaf cell proliferation and cell expansion, under well-watered and drought stress conditions. Compared to control (80% field capacity; FC 80%), mild (FC 50%) and severe drought (FC 35%) significantly reduced Genie chili height by 21.87% and 44.37%, respectively. Plant shoot biomass decreased progressively as the drought level increased, with a marked decrease up to 68.94% in FC 35% condition. Although the leaf density was less affected by the stress, the leaf blade area of plants treated in mild and severe drought reduced by 13.30% and 66.25%, respectively, compared to that in control. Upon a closer inspection, drought reduced the average leaf epidermal cell area from 1156.10 µm2 in control to 849.06 µm2 in mild drought, and up to 760.86 µm2 upon severe drought. Interestingly, epidermal cell density per leaf area unit increased in response to elevated stress strength, from 86,848.28 cells cm−1 to 119,066.11 cells cm−1 (37.10% increase) and 133,475.10 cells cm−1 (53.69% increase) in mild and severe drought, respectively. Stomata formation was negatively affected by drought as reflected by the reduction of the stomatal index from 43.31 in.the control to 42.16 in.mild, and 32.29 in severe drought. The enhancement of overall cell density together with the reduced cell size might hint at a compensation mechanism to maintain leaf organ size in response to drought in Genie chili pepper. Altogether, biomass ratio shifting toward root instead of shoot, decrease in leaf size, and reduction in leaf stomatal index suggested a drought avoidance mechanism to limit water loss." @default.
- W4313592844 created "2023-01-06" @default.
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- W4313592844 date "2023-01-01" @default.
- W4313592844 modified "2023-10-16" @default.
- W4313592844 title "The effect of mild and severe drought on genie chili (Capsicum annuum L. var. genie) leaf cell growth" @default.
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- W4313592844 doi "https://doi.org/10.1063/5.0118403" @default.
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