Genotypic responses of rice to alternate wetting and drying irrigation in the Mekong Delta

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dc.contributor.authorJohnson, Kristian
dc.contributor.authorVo, Thuong Ti Bach
dc.contributor.authorVan Nha, Duong
dc.contributor.authorAsch, Folkard
dc.date.accessioned2024-09-03T07:30:24Z
dc.date.available2024-09-03T07:30:24Z
dc.date.issued2023de
dc.description.abstractIn the Vietnamese Mekong Delta (VMD), alternate wetting and drying (AWD) in rice (Oryza sativa L.) production during the dry season has the potential to reduce greenhouse gas emission and freshwater use. However, its effect on yield compared with continuously flooded systems can vary. To evaluate the effect of AWD on yield and yield‐forming processes on genotypes commonly grown in the VMD, field trials over two consecutive dry seasons were conducted at the Loc Troi Group's agricultural research station in the VMD. We observed a significant yield reduction, 7% on average, across all varieties grown under AWD. Analysis of yield components showed that under AWD, genotypes on average produced more tillers, but fewer spikelets, suffered greater spikelet sterility and had a lower 1000 grain weight. The size of this effect differed between dry seasons. Accordingly, we were able to identify and characterize genotypes better suited to AWD. We also could relate shifts in sink‐source relationships to the overlap of drying events and key phenological stages other than flowering. Our study shows how successful implementation of AWD requires adaptation to both environment and genotype.en
dc.identifier.urihttps://hohpublica.uni-hohenheim.de/handle/123456789/16181
dc.identifier.urihttps://doi.org/10.1111/jac.12649
dc.language.isoengde
dc.rights.licensecc_by-nc-ndde
dc.source1439-037Xde
dc.sourceJournal of Agronomy and Crop Science; Vol. 209, No. 5 (2023), 593-612de
dc.subjectAlternate wetting and dryingen
dc.subjectDrought stressen
dc.subjectIrrigationen
dc.subjectMekong Deltaen
dc.subjectYield component analysisen
dc.subject.ddc630
dc.titleGenotypic responses of rice to alternate wetting and drying irrigation in the Mekong Deltaen
dc.type.diniArticle
dcterms.bibliographicCitationJournal of Agronomy and Crop Science, 209 (2023), 5, 593-612. https://doi.org/10.1111/jac.12649. ISSN: 1439-037X
dcterms.bibliographicCitation.issue5
dcterms.bibliographicCitation.journaltitleJournal of Agronomy and Crop Science
dcterms.bibliographicCitation.volume209
local.export.bibtex@article{Johnson2023, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16181}, doi = {10.1111/jac.12649}, author = {Johnson, Kristian and Vo, Thuong Ti Bach and Van Nha, Duong et al.}, title = {Genotypic responses of rice to alternate wetting and drying irrigation in the Mekong Delta}, journal = {Journal of Agronomy and Crop Science}, year = {2023}, volume = {209}, number = {5}, }
local.export.bibtexAuthorJohnson, Kristian and Vo, Thuong Ti Bach and Van Nha, Duong et al.
local.export.bibtexKeyJohnson2023
local.export.bibtexType@article

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