This study investigated the transpiration (TR) response to (i) diurnal changes of vapor pressure deficit (VPD) and (ii) soil dry down in four maize hybrids contrasting for yield performance under drought stress in the field. These four hybrids included a popular local variety P3K and a commercial check SC303 that were found to be drought susceptible. The experiment was carried out in pots at early vegetative stage (8-leaf stage). Results showed an increase of TR with increasing VPD but with significant variations between the hybrids tested. The two susceptible hybrids P3K and SC303 had higher TR over nearly the whole range of VPD values than the two other hybrids, with the largest variation recorded at VPD values above 6 kPa. Regarding the TR response to soil moisture depletion, normalized TR (NTR) of all genotypes reduced with soil moisture depletion for all treatments. In addition, NTR showed a significant reduction for plants that were irrigated at 3 days intervals before the experiment as compared to those irrigated daily. There was a trend of higher water extraction, as evaluated with the fraction of transpirable soil water (FTSW) threshold, in the tolerant hybrids relative to the susceptible ones for the two irrigation treatments. In addition, prior exposure to water deficit tends to lower the FTSW threshold which leads to increased water extraction capacity at lower soil moisture level. These results demonstrate that control of TR under high VPD conditions coupled with high water extraction capacity from progressively drying soil can contribute to drought tolerance in maize hybrids.
| Published in | Journal of Plant Sciences (Volume 7, Issue 1) |
| DOI | 10.11648/j.jps.20190701.11 |
| Page(s) | 1-7 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2019. Published by Science Publishing Group |
Maize, Transpiration, VPD, Drought
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APA Style
Oumarou Abdoulaye Moussa, Seyni Boureima, Hassane Bil-Assanou Issoufou, Yacoubou Bakasso, Ali Mahamane, et al. (2019). Response of Maize (Zea mays L.) Hybrids to Diurnal Variation of Vapor Pressure Deficit (VPD) and Progressive Soil Moisture Depletion. Journal of Plant Sciences, 7(1), 1-7. https://doi.org/10.11648/j.jps.20190701.11
ACS Style
Oumarou Abdoulaye Moussa; Seyni Boureima; Hassane Bil-Assanou Issoufou; Yacoubou Bakasso; Ali Mahamane, et al. Response of Maize (Zea mays L.) Hybrids to Diurnal Variation of Vapor Pressure Deficit (VPD) and Progressive Soil Moisture Depletion. J. Plant Sci. 2019, 7(1), 1-7. doi: 10.11648/j.jps.20190701.11
AMA Style
Oumarou Abdoulaye Moussa, Seyni Boureima, Hassane Bil-Assanou Issoufou, Yacoubou Bakasso, Ali Mahamane, et al. Response of Maize (Zea mays L.) Hybrids to Diurnal Variation of Vapor Pressure Deficit (VPD) and Progressive Soil Moisture Depletion. J Plant Sci. 2019;7(1):1-7. doi: 10.11648/j.jps.20190701.11
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Download@article{10.11648/j.jps.20190701.11,
author = {Oumarou Abdoulaye Moussa and Seyni Boureima and Hassane Bil-Assanou Issoufou and Yacoubou Bakasso and Ali Mahamane and Mahamane Saadou and Mainassara Zaman-Allah},
title = {Response of Maize (Zea mays L.) Hybrids to Diurnal Variation of Vapor Pressure Deficit (VPD) and Progressive Soil Moisture Depletion},
journal = {Journal of Plant Sciences},
volume = {7},
number = {1},
pages = {1-7},
doi = {10.11648/j.jps.20190701.11},
url = {https://doi.org/10.11648/j.jps.20190701.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20190701.11},
abstract = {This study investigated the transpiration (TR) response to (i) diurnal changes of vapor pressure deficit (VPD) and (ii) soil dry down in four maize hybrids contrasting for yield performance under drought stress in the field. These four hybrids included a popular local variety P3K and a commercial check SC303 that were found to be drought susceptible. The experiment was carried out in pots at early vegetative stage (8-leaf stage). Results showed an increase of TR with increasing VPD but with significant variations between the hybrids tested. The two susceptible hybrids P3K and SC303 had higher TR over nearly the whole range of VPD values than the two other hybrids, with the largest variation recorded at VPD values above 6 kPa. Regarding the TR response to soil moisture depletion, normalized TR (NTR) of all genotypes reduced with soil moisture depletion for all treatments. In addition, NTR showed a significant reduction for plants that were irrigated at 3 days intervals before the experiment as compared to those irrigated daily. There was a trend of higher water extraction, as evaluated with the fraction of transpirable soil water (FTSW) threshold, in the tolerant hybrids relative to the susceptible ones for the two irrigation treatments. In addition, prior exposure to water deficit tends to lower the FTSW threshold which leads to increased water extraction capacity at lower soil moisture level. These results demonstrate that control of TR under high VPD conditions coupled with high water extraction capacity from progressively drying soil can contribute to drought tolerance in maize hybrids.},
year = {2019}
}
TY - JOUR T1 - Response of Maize (Zea mays L.) Hybrids to Diurnal Variation of Vapor Pressure Deficit (VPD) and Progressive Soil Moisture Depletion AU - Oumarou Abdoulaye Moussa AU - Seyni Boureima AU - Hassane Bil-Assanou Issoufou AU - Yacoubou Bakasso AU - Ali Mahamane AU - Mahamane Saadou AU - Mainassara Zaman-Allah Y1 - 2019/01/31 PY - 2019 N1 - https://doi.org/10.11648/j.jps.20190701.11 DO - 10.11648/j.jps.20190701.11 T2 - Journal of Plant Sciences JF - Journal of Plant Sciences JO - Journal of Plant Sciences SP - 1 EP - 7 PB - Science Publishing Group SN - 2331-0731 UR - https://doi.org/10.11648/j.jps.20190701.11 AB - This study investigated the transpiration (TR) response to (i) diurnal changes of vapor pressure deficit (VPD) and (ii) soil dry down in four maize hybrids contrasting for yield performance under drought stress in the field. These four hybrids included a popular local variety P3K and a commercial check SC303 that were found to be drought susceptible. The experiment was carried out in pots at early vegetative stage (8-leaf stage). Results showed an increase of TR with increasing VPD but with significant variations between the hybrids tested. The two susceptible hybrids P3K and SC303 had higher TR over nearly the whole range of VPD values than the two other hybrids, with the largest variation recorded at VPD values above 6 kPa. Regarding the TR response to soil moisture depletion, normalized TR (NTR) of all genotypes reduced with soil moisture depletion for all treatments. In addition, NTR showed a significant reduction for plants that were irrigated at 3 days intervals before the experiment as compared to those irrigated daily. There was a trend of higher water extraction, as evaluated with the fraction of transpirable soil water (FTSW) threshold, in the tolerant hybrids relative to the susceptible ones for the two irrigation treatments. In addition, prior exposure to water deficit tends to lower the FTSW threshold which leads to increased water extraction capacity at lower soil moisture level. These results demonstrate that control of TR under high VPD conditions coupled with high water extraction capacity from progressively drying soil can contribute to drought tolerance in maize hybrids. VL - 7 IS - 1 ER -
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