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Genetic control of root architectural traits in KDML105 chromosome segment substitution lines under well-watered and drought stress conditions
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Metadata
Document Title
Genetic control of root architectural traits in KDML105 chromosome segment substitution lines under well-watered and drought stress conditions
Author
Ruangsiri M.,Vejchasarn P.,Saengwilai P.,Lynch J.,Bennett M.J.,Brown K.M.,Chutteang C.,Boonruangrod R.,Shearman J.,Toojinda T.,Siangliw J.L.
Name from Authors Collection
Scopus Author ID
12779115900
Affiliations
Center for Agriculture Biotechnology, Kasetsart University, Nakhon Pathom, Thailand; Center of Excellence on Agricultural Biotechnology: (AG-BIO/PERDO-CHE), Bangkok, Thailand; Ubon Ratchathani Rice Research Center (URRC), Ubon Ratchathani, Thailand; Department of Biology, Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Plant Science, Pennsylvania State UniversityPA, United States; School of Biosciences, University of Nottingham, Sutton Bonington, United Kingdom; Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, Thailand; Department of Horticulture, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, Thailand; National Omics Center, National Science and Technology Development Agency (NSTDA), Pathum1, Thani, Thailand; National Center for Genetic Engineering and Biotechnology, NSTDA, Pathum Thani, Thailand
Type
Article
Source Title
Plant Production Science
ISSN
1343943X
Year
2021
Volume
24
Issue
4
Page
512-529
Open Access
All Open Access, Gold
Publisher
Taylor and Francis Ltd.
DOI
10.1080/1343943X.2021.1883990
Abstract
Drought is a major constraint in rainfed rice production and root architectural traits are important breeding targets for improving productivity under drought stress. A set of chromosome segment substitution lines (KDML105-CSSLs) and KDML105 were grown in the wet season at two sites (Rice Gene Discovery (RGD) and Ubon Ratchatani Rice Research Center (URRC)) in Thailand under well-watered (WW) and drought stress (DS) treatments. RGD is characterized by having a heavy clay soil type while URRC’s soil has a high percentage of sand and characterized by infertility. Root architecture traits varied within the population at both sites and exhibited plasticity in response to drought as affected by location by water regime interaction. Lateral root density increased by 77% with drought at RGD but decreased by 18% at URRC. The proportion of nodal roots that elongated more vertically increased under drought stress by 21%, at RGD. Root number per tiller was negatively associated with tiller number and biomass at RGD under drought, while lateral root density was negatively associated with biomass under drought at URRC. Eight QTL were identified for the number of nodal roots per tiller, lateral root density, and nodal root growth angle. Several candidate genes were identified by annotating the genes within the QTL regions. Our study presented genetic insights into root architectural traits with potential use in rice breeding programs for drought tolerance. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Keyword
Drought | kdml105-CSSL | QTL | Rice | root architecture
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY-NC
Rights
Author
Publication Source
Scopus
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