Effects of Drought Stress on Photosynthetic Characteristics and Endogenous Hormone Levels in the Sweet Potato (Ipomoea batatas) DOI Creative Commons
Shihao Huang, Jinqiang Wang, Huanyuan Wang

et al.

Horticulturae, Journal Year: 2025, Volume and Issue: 11(5), P. 456 - 456

Published: April 24, 2025

In the context of climate change and severe water shortages in agriculture, we explored stress responses sweet potato (Ipomoea batatas) terms endogenous hormone levels other physiological characteristics, providing a theoretical basis for drought-resistant cultivation potato. This study was conducted from 2021–2022 solar greenhouse under artificially controlled conditions. We determined biomass, agronomic indexes, photosynthetic parameters, three treatments: normal supply (CK), mild drought (LD), (HD). The results revealed that inhibited aboveground belowground growth compared with CK; yield decreased increasing drought. net rate, stomatal conductance, transpiration rate leaves significantly stress. leaves’ intercellular CO2 concentration (Ci) up to 50 days after transplanting but increased 75 transplanting. zeatin riboside (ZR) indole-3-acetic acid (IAA) contents were lower tubers LD HD treatments CK, whereas abscisic (ABA) content higher. Within same period, (ZR + IAA)/ABA ratio severity. Correlation analysis ABA leaf Ci positively correlated, both indices negatively correlated all indices. Aboveground dry weight ZR IAA contents. These findings demonstrate regulatory effects elevated concentrations on conductance during indicate closure mainly responsible observed early stage rapid decrease late may have been caused by non-stomatal factors. provide foundation future cultivation.

Language: Английский

Effects of Drought Stress on Photosynthetic Characteristics and Endogenous Hormone Levels in the Sweet Potato (Ipomoea batatas) DOI Creative Commons
Shihao Huang, Jinqiang Wang, Huanyuan Wang

et al.

Horticulturae, Journal Year: 2025, Volume and Issue: 11(5), P. 456 - 456

Published: April 24, 2025

In the context of climate change and severe water shortages in agriculture, we explored stress responses sweet potato (Ipomoea batatas) terms endogenous hormone levels other physiological characteristics, providing a theoretical basis for drought-resistant cultivation potato. This study was conducted from 2021–2022 solar greenhouse under artificially controlled conditions. We determined biomass, agronomic indexes, photosynthetic parameters, three treatments: normal supply (CK), mild drought (LD), (HD). The results revealed that inhibited aboveground belowground growth compared with CK; yield decreased increasing drought. net rate, stomatal conductance, transpiration rate leaves significantly stress. leaves’ intercellular CO2 concentration (Ci) up to 50 days after transplanting but increased 75 transplanting. zeatin riboside (ZR) indole-3-acetic acid (IAA) contents were lower tubers LD HD treatments CK, whereas abscisic (ABA) content higher. Within same period, (ZR + IAA)/ABA ratio severity. Correlation analysis ABA leaf Ci positively correlated, both indices negatively correlated all indices. Aboveground dry weight ZR IAA contents. These findings demonstrate regulatory effects elevated concentrations on conductance during indicate closure mainly responsible observed early stage rapid decrease late may have been caused by non-stomatal factors. provide foundation future cultivation.

Language: Английский

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