Skip to main content

Research Repository

Advanced Search

Avoiding lodging in irrigated spring wheat. II. Genetic variation of stem and root structural properties

Authors

F.J.

P.M. Berry

G. Molero

M.P. Reynolds



Abstract

Lodging-related traits were evaluated on the CIMMYT Core spring wheat Germplasm Panel (CIMCOG) in the Yaqui Valley of North-West Mexico during three seasons (2010–2013). Genetic variation was significant for all the lodging-related traits in the cross-year analysis, however, significant G × E interaction due to rank changes or changes in the absolute differences between cultivars were identified. The inconsistences on cultivar performances across seasons particularly reduced the heritability of key characters related to root lodging resistance (anchorage strength). Target characters related to stem lodging resistance (stem strength) showed good heritability values equal or above 0.70. Positive correlations between stem strength and stem diameter and between root plate spread and root strength were found. Selecting for greater stem diameter and wall width, greater root plate spread and shorter plant height could enable breeders to increase lodging resistance by increasing stem strength, root strength and decreasing plant leverage, respectively. Achieving a lodging-proof crop will depend on finding a wider root plate spread and implementing new management strategies. Genetic linkages between lodging traits will not constrain the combination of the key lodging-trait dimensions to achieve a lodging-proof ideotype. However, strong association between stem strength and stem wall width will increase the total biomass cost needed for lodging resistance.

Citation

Piñera-Chavez, F., Berry, P., Foulkes, M., Molero, G., & Reynolds, M. (2016). Avoiding lodging in irrigated spring wheat. II. Genetic variation of stem and root structural properties. Field Crops Research, 196, https://doi.org/10.1016/j.fcr.2016.06.007

Journal Article Type Article
Acceptance Date Jun 16, 2016
Online Publication Date Jul 9, 2016
Publication Date Sep 30, 2016
Deposit Date Sep 13, 2017
Publicly Available Date Sep 13, 2017
Journal Field Crops Research
Print ISSN 0378-4290
Electronic ISSN 1872-6852
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 196
DOI https://doi.org/10.1016/j.fcr.2016.06.007
Keywords Lodging; Spring wheat; Stem strength; Root plate spread; Plant height
Public URL https://nottingham-repository.worktribe.com/output/808645
Publisher URL http://www.sciencedirect.com/science/article/pii/S037842901630185X

Files

1-s2.0-S037842901630185X-main.pdf (582 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





You might also like



Downloadable Citations