Recherche de géniteurs de résistance à la fusariose de l'épi causée par Fusarium culmorum chez le blé et les espèces voisines

Saur, Laurent; Morlais, JY

doi:10.1051/agro:19910701

Cited by 33 publications

(7 citation statements)

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“…FHB severity was assessed at 350°C.d and 450°C.d after inoculation. The proportion of infected spikelets was recorded using a logarithmic scale from 1 (no disease symptoms) to 9 (spikes completely diseased) (Saur 1991;Ban and Suenaga 2000). Flowering time was recorded in all 3 years tested (1998, 1999, and 2000), and plant height was measured (to the tip of the spike, excluding awns) in 1999 and 2000.…”

Section: Plant Materialsmentioning

confidence: 99%

Mapping of quantitative trait loci for field resistance to Fusarium head blight in an European winter wheat

et al. 2002

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Fusarium head blight (FHB) caused by Fusarium culmorum is an economically important disease of wheat that may cause serious yield and quality losses under favorable climate conditions. The development of disease-resistant cultivars is the most effective control strategy. Worldwide, there is heavy reliance on the resistance pool originating from Asian wheats, but excellent field resistance has also been observed among European winter wheats. The objective of this study was to map and characterize quantitative traits loci (QTL) of resistance to FHB among European winter wheats. A population of 194 recombinant inbred lines (RILs) was genotyped from a cross between two winter wheats Renan (resistant)/Récital (susceptible) with microsatellites, AFLP and RFLP markers. RILs were assessed under field conditions For 3 years in one location. Nine QTLs were detected, and together they explained 30-45% of the variance, depending on the year. Three of the QTLs were stable over the 3 years. One stable QTL, QFhs.inra.2b, was mapped to chromosome 2B and two QTLs QFhs.inra.5a2 and QFhs.inra5a3, to chromosome 5A; each of these QTLs explained 6.9-18.6% of the variance. Other QTLs were identified on chromosome 2A, 3A, 3B, 5D, and 6D, but these had a smaller effect on FHB resistance. One of the two QTLs on chromosome 5A was linked to gene B1 controlling the presence of awns. Overlapping QTLs for FHB resistance were those for plant height or/and flowering time. Our results confirm that wheat chromosomes 2A, 3A, 3B, and 5A carry FHB resistance genes, and new resistance factors were identified on chromosome arms 2BS and 5AL. Markers flanking these QTLs should be useful tools for combining the resistance to FHB of Asian and European wheats to increase the resistance level of cultivars.

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Section: Plant Materialsmentioning

confidence: 99%

Mapping of quantitative trait loci for field resistance to Fusarium head blight in an European winter wheat

et al. 2002

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“…However, many backcrosses are needed to incorporate these exotic sources into adapted varieties, making this a long‐term strategy. An alternative short‐term approach has been to exploit moderate resistance already present in adapted material, as documented by Saur (1991) and Mielke (1980) Mapping studies based on spray inoculation in field conditions in ‘Renan’ × ‘Recital’ population, for example, revealed three stable QTLs from Renan on chromosomes 2B and 5A (Gervais et al, 2003), whereas Paillard et al (2004) reported two major QTLs from Arina from an Arina × Forno population on chromosomes 4A and 6D. However, the Arina × Forno map for chromosome 4A and 6D (Paillard et al, 2003) had two limitations: (i) the maps consisted of very few markers; and (ii) the flanking markers on either side of both chromosomes are RFLPs, which are not breeder‐friendly for high‐throughput molecular breeding strategies.…”

mentioning

confidence: 99%

“…However, many backcrosses are needed to incorporate these exotic sources into adapted varieties, making this a long-term strategy. An alternative short-term approach has been to exploit moderate resistance already present in adapted material, as documented by Saur (1991) and Mielke (1980). Mapping studies based on spray inoculation in field conditions in 'Renan' 3 'Recital' population, for example, revealed three stable QTLs from Renan on chromosomes 2B and 5A (Gervais et al, 2003), whereas Paillard et al (2004) reported two major QTLs from Arina from an Arina 3 Forno population on chromosomes 4A and 6D.…”

mentioning

confidence: 99%

Quantitative Trait Loci Controlling Fusarium Head Blight Resistance and Low Deoxynivalenol Content in Hexaploid Wheat Population from ‘Arina’ and NK93604

et al. 2007

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Breeding for Fusarium head blight (FHB) resistant wheat adapted to the Norwegian climatic conditions is one of the top priorities in the country. This study was conducted to characterize QTLs for FHB resistance and low deoxynivalenol (DON) content in a population of 93 double haploid lines from a cross between ‘Arina’ and NK93604. Both parents have moderate levels of resistance to FHB. The population was assessed for FHB resistance under field conditions for 3 yr (2001 to 2003), and DON content was analyzed from seed samples in the 2002 experiment. The two traits showed significant genetic variation and were significantly correlated with each other. Composite interval mapping (CIM) identified four QTLs using the 3 yr mean for FHB resistance on chromosomes 1AL, 1BL, 6BS, and 7AL. The QTLs on 1AL, 1BL, and 7AL were consistently detected in all 3 yr, and explained 27.9, 19.6, and 14.8% of the phenotypic variation, respectively. The QTLs on chromosomes 1BL and 6BS originated from Arina, whereas those on 1AL and 7AL were from NK93604. None of the QTLs for FHB resistance detected in this study were coincident with those previously reported in the Arina/‘Forno’ population. Two major QTLs, both derived from NK93604, on chromosomes 1AL and 2AS were identified for DON content that explained 27.9 and 26.7% of the variation, respectively. A major QTL for FHB resistance on 1AL coincided with a QTL for DON content. As far as we are aware, the QTL on chromosome 1AL is novel and not reported elsewhere. Data from the present study provides breeders with additional information on chromosomal regions associated with FHB resistance and DON content in European wheats and will help guide the development of FHB‐resistant wheat.

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“…The cultivation of genetically resistant cultivars is the most cost‐effective method to control the disease. Genetic variation for resistance to FHB is well documented in wheat and its relatives (Mesterhazy, 1983, 1995; Snijders, 1990a; Saur, 1991; Wilcoxson et al, 1992; Lemmens et al, 1993; Buerstmayr et al, 1996a, b). A general review of FHB on small grains has been published by Parry et al (1995) Breeding for resistance has been reviewed by Mesterhazy (1995) and Miedaner (1997)…”

mentioning

confidence: 99%

Resistance to Fusarium Head Blight in Winter Wheat: Heritability and Trait Associations

Buerstmayr¹,

Steiner²,

Lemmens³

et al. 2000

Crop Science

116

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Fusarium head blight (FHB) or scab caused by Fusarium Link: Fr. spp. is a widespread disease of cereals, causing significant yield losses and contaminating cereal products with mycotoxins. The complex inheritance of resistance has hampered progress in breeding resistant, agronomically adapted cultivars. To streamline breeding for FHB resistance, we estimated genetic and environmental variance components and broad‐sense heritability in two winter wheat (Triticum aestivum L.) populations, determined the association of FHB resistance with other traits (flowering date, plant height, and awnedness), and determined the level of maternal effects on FHB resistance. The moderately susceptible Austrian cultivar Capo was crossed with two resistant lines, one from Hungary (UNG‐226) and one from the Netherlands (SVP‐72017). A hierarchical design was applied to develop recombinant F4‐derived lines. Head blight resistance was measured by visual assessment of disease symptoms in artificially inoculated, mist‐irrigated field experiments during 2 yr. Artificial inoculation and mist irrigation led to reproducible FHB infections. High broad‐sense heritabilities (H > 0.75) were measured for FHB resistance, allowing for considerable progress by selection. The magnitude of additive genetic variance was greater than additive × additive epistatic variance. Despite a significant negative correlation between visual FHB symptoms and plant height true(r=−0.37true), the successful selection of short and FHB resistant genotypes should be feasible. In only one population, awned progeny showed slightly reduced FHB. Reciprocal effects were significant in one cross only. The development of FHB resistant cultivars should be possible by phenotypic selection under epidemic conditions, and should be largely independent of plant height, flowering date, awnedness, and genotype of the maternal parent within a cross.

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Recherche de géniteurs de résistance à la fusariose de l'épi causée par Fusarium culmorum chez le blé et les espèces voisines

Cited by 33 publications

References 0 publications

Mapping of quantitative trait loci for field resistance to Fusarium head blight in an European winter wheat

Mapping of quantitative trait loci for field resistance to Fusarium head blight in an European winter wheat

Quantitative Trait Loci Controlling Fusarium Head Blight Resistance and Low Deoxynivalenol Content in Hexaploid Wheat Population from ‘Arina’ and NK93604

Resistance to Fusarium Head Blight in Winter Wheat: Heritability and Trait Associations

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