Establishment method affects rice root plasticity in response to drought and its relationship with grain yield stability

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cg.contributor.affiliationInternational Rice Research Institute
cg.contributor.affiliationHunan Agricultural University
cg.identifier.doihttps://doi.org/10.1093/jxb/erab214
cg.issn0022-0957
cg.issue14
cg.journalJournal of Experimental Botany
cg.volume72
dc.contributor.authorXie, Xiaobing
dc.contributor.authorQuintana, Marinell R.
dc.contributor.authorSandhu, Nitika
dc.contributor.authorSubedi, Sushil R.
dc.contributor.authorZou, Yingbin
dc.contributor.authorRutkoski, Jessica Elaine
dc.contributor.authorHenry, Amelia
dc.date.accessioned2024-12-19T12:53:40Zen
dc.date.available2024-12-19T12:53:40Zen
dc.identifier.urihttps://hdl.handle.net/10568/164273
dc.titleEstablishment method affects rice root plasticity in response to drought and its relationship with grain yield stabilityen
dcterms.abstractBy responding to the variable soil environments in which they are grown, the roots of rice crops are likely to contribute to yield stability across a range of soil moistures, nutrient levels, and establishment methods. In this study, we explored different approaches to quantification of root plasticity and characterization of its relationship with yield stability. Using four different statistical approaches (plasticity index, slope, AMMI, and factor analytic) on a set of 17 genotypes including several recently-developed breeding lines targeted to dry direct-seeding, we identified only very few direct relationships between root plasticity and yield stability. However, genotypes identified as having combined yield stability and root plasticity showed higher grain yields across trials. Furthermore, root plasticity was expressed to a greater degree in puddled transplanted trials rather than under dry direct-seeding. Significant interactions between nitrogen and water resulted in contrasting relationships between nitrogen-use efficiency and biomass stability between puddled-transplanted and direct-seeded conditions. These results reflect the complex interaction between nitrogen, drought, and even different types of drought (as a result of the establishment method) on rice root growth, and suggest that although rice root plasticity may confer stable yield across a range of environments, it might be necessary to more narrowly define the targeted environments to which it will be most beneficial.en
dcterms.available2021-05-14
dcterms.bibliographicCitationXie, Xiaobing, Quintana, M.R., Sandhu, N., Subedi, S.R., Zou, Yingbin, Rutkoski, J.E.and Henry, A. 2021. Establishment method affects rice root plasticity in response to drought and its relationship with grain yield stability. Journal of Experimental Botany, Volume 72 no. 14 p. 5208-5220en
dcterms.extentpp. 5208-5220
dcterms.issued2021-07-10
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherOxford University Press
dcterms.subjectphysiologyen
dcterms.subjectplant scienceen
dcterms.subjectammien
dcterms.subjectdirect seedingen
dcterms.subjectfactor analyticen
dcterms.subjectoryza sativaen
dcterms.subjectroot plasticityen
dcterms.subjectyield stabilityen
dcterms.typeJournal Article

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