Héritabilité de la résistance à la fusariose de l'épi et sélection récurrente dans une population de blé tendre

Saur, L.; Trottet, Maxime; Morlais, JY

doi:10.1051/agro:19920402

Cited by 7 publications

(5 citation statements)

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“…These results are consistent with previously genetic studies of FHB resistance (Bai and Shaner 1996;. Saur and Trottet (1992) and Singh et al (1995) measured FHB resistance by visual observation and reported heritability estimates ranging from 0.66 to 0.93 under field conditions. Recently, high broad-sense heritabilities (h 2 > 0.75) for FHB resistance have been reported (Buerstmayr et al 2000).…”

Section: Fhb Assessmentsupporting

confidence: 92%

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: Fhb Assessmentsupporting

confidence: 92%

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

et al. 2002

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“…They used replicated single‐spike inoculations in the field to evaluate F 6 recombinant inbred populations from crosses involving ‘Frontana’ as the resistant parent. Similarly, Saur and Trottet (1992) reported heritability estimates in the range of 0.8 to 0.9 for visual FHB symptoms using spray inoculations. These heritability estimates were derived from single‐environment experiments and are likely inflated by genotype × environment interaction.…”

Section: Discussionmentioning

confidence: 95%

“…Snijders (1990b) reported broad‐sense heritability of FHB resistance in F 2 single‐plant populations from 0.05 to 0.89. Heritability estimates by Saur and Trottet (1992) and Singh et al (1995) were in the range of 0.66 to 0.93 but were derived from single environments.…”

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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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“…Ils présentent alors l'intérêt d'une évalua-tion plus poussée (matériel plus fixé, caractères mesurés plus nombreux, conditions d'essais plus conformes à celles de la grande culture) ou éva-luent un plus grand nombre de cycles. D'autres relatent des expériences partant de matériel extrait de populations déjà utilisées (Burton et al, 1990 : population PII ; Hanson, 1985Hanson, et 1992 Gao, 1982, in Saur et Trottet, 1992Leemans, 1992) mais ne sont pas utilisés. Les expérimentateurs ont pu renoncer face à la difficulté à gérer le système Frey, 1989a ;Burton et al, 1983) ou font suivre les croisements simples entre parents d'un diallèle (Frey et al, 1988 ;Marocco et (Burton et al, 1990 ;Tinius et al, 1991 (Frey et al, 1988 ; et Frey, 1990 Bliss, 1991 a et 1991 b ; Tinius et al, 1991 et 1992 ; Burton et al, 1990).…”

Section: Préliminairesunclassified

Sélection récurrente chez les autogames pour l'amélioration des variétés lignées pures: une revue bibliographique. II

Goldringer

Brabant

1993

Agronomie

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Kervella et al (1991) made a bibliographic review of the experiments, covering papers published up to 1989. The feasibility of recurrent selection and the interest of applying it to pure line value breeding was demonstrated. Yet a number of different points still had to be optimized: intercrossing, early generation selection and multitrait selection. A complementary review which takes into account papers from 1990 to 1992 is presented here. Some older papers which did not appear in the first review are also analyzed. An evolution in the approaches, the methodologies and concerns of the authors is emphasized. Scheme efficiency is assessed; problems which remain to be solved and the limits of the experiments are discussed. recurrent selection / autogamous species / genetic gain / pure line value

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Héritabilité de la résistance à la fusariose de l'épi et sélection récurrente dans une population de blé tendre

Cited by 7 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

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

Sélection récurrente chez les autogames pour l'amélioration des variétés lignées pures: une revue bibliographique. II

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