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Open AccessArticle

Anther Extrusion and Its Association with Fusarium Head Blight in CIMMYT Wheat Germplasm

1
International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600 Mexico DF, Mexico
2
Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
3
International Maize and Wheat Improvement Center (CIMMYT) China Office, c/o CAAS, 12 Zhongguancun South Street, Beijing 100081, China
*
Authors to whom correspondence should be addressed.
Agronomy 2020, 10(1), 47; https://doi.org/10.3390/agronomy10010047
Received: 2 November 2019 / Revised: 21 December 2019 / Accepted: 25 December 2019 / Published: 28 December 2019
(This article belongs to the Special Issue Breeding Healthy Cereals: Genetic Improvement of Fusarium Resistance)
Pronounced anther extrusion (AE) is associated with field resistance to Fusarium head blight (FHB), one of the most devastating diseases of wheat globally. In this study, two recombinant inbred line (RIL) populations were used to map quantitative trait loci (QTL) for AE and field FHB resistance and to investigate the association of both traits at the genetic level. Furthermore, two panels of International Maize and Wheat Improvement Center (CIMMYT) wheat breeding lines were evaluated to describe the phenotypic association between the two traits in detail. Highly significant negative correlation was identified between AE and FHB severity in the two populations and the two panels, with r-values ranging from 0.55 to 0.74. QTL analysis in the two RIL populations identified 12 QTL for AE and nine for FHB resistance, of which five QTL located on chromosomes 3BL, 4BS, 4DS, 5AL, and 5BL were associated with both AE and FHB, collectively explaining over 50% of phenotypic variation for FHB. The QTL on chromosomes 4BS, 4DS, 5AL, and 5BL were closely linked to Rht-B1, Rht-D1, Vrn-A1, and Vrn-B1 genes, respectively. In conclusion, AE is closely related to field FHB resistance and could be used as a morphological marker in wheat breeding for field FHB resistance. View Full-Text
Keywords: wheat; Fusarium head blight; anther extrusion; plant height; days to heading wheat; Fusarium head blight; anther extrusion; plant height; days to heading
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MDPI and ACS Style

Xu, K.; He, X.; Dreisigacker, S.; He, Z.; Singh, P.K. Anther Extrusion and Its Association with Fusarium Head Blight in CIMMYT Wheat Germplasm. Agronomy 2020, 10, 47.

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