Classification of Plants Resistant to Heterodera avenae1

Andersen, Kirsten; Andersen, Sigurd

doi:10.1111/j.1365-2338.1982.tb01826.x

Cited by 5 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As expected, the resistance-associated T-A-A-G haplotype that is present in Chebec was also observed for its resistant ancestor Orge Martin. This haplotype was also observed for Bajo Aragon, Barley 191, Morocco, Martin 403-2, Orge Martin 839, Sabarlis and Siri, all of which have been classified as carrying Rha2 and/or Rha3 (Andersen and Andersen 1982 ; Smiley et al 2011 ). Four other haplotypes were observed: two in accessions that were found to be resistant (C-G-G-G in Morocco (Early) and Athinais, and C-A-A-G in Nile) and two (C-G-G-A and C-G-G-null) among cultivars that were found to be susceptible (Alfa, Clipper, Drost, Herta, Ortolan, Varde and Schooner).…”

Section: Resultsmentioning

confidence: 68%

“…The plant materials used here included two populations of doubled haploid lines (Chebec/Harrington (C/H) and Clipper/Sahara 3771 (C/S)), their parents (Chebec, Harrington, Clipper and Sahara 3771), the susceptible cultivar Schooner, accessions of 17 barley lines that had previously been used to discriminate among pathotypes of H. avenae (Table S1 in Online Resource 1) (Andersen and Andersen 1982; Kort et al 1964; O’Brien and Fisher 1977, 1979; Smiley et al 2011) and 175 other cultivars of barley (Table S2 in Online Resource 1). The C/H and C/S populations were the same as those used by Kretschmer et al (1997).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Fine mapping of Rha2 in barley reveals candidate genes for resistance against cereal cyst nematode

et al. 2019

View full text Add to dashboard Cite

Key message The cereal cyst nematode resistance locus Rha2 was mapped to a 978 kbp region on the long arm of barley chromosome 2H. Three candidate genes are discussed. Abstract The cereal cyst nematode (CCN) Heterodera avenae is a soil-borne obligate parasite that can cause severe damage to cereals. This research involved fine mapping of Rha2 , a CCN resistance locus on chromosome 2H of barley. Rha2 was previously mapped relative to restriction fragment length polymorphisms (RFLPs) in two mapping populations. Anchoring of flanking RFLP clone sequences to the barley genome assembly defined an interval of 5077 kbp. Genotyping-by-sequencing of resistant and susceptible materials led to the discovery of potentially useful single nucleotide polymorphisms (SNPs). Assays were designed for these SNPs and applied to mapping populations. This narrowed the region of interest to 3966 kbp. Further fine mapping was pursued by crossing and backcrossing the resistant cultivar Sloop SA to its susceptible ancestor Sloop. Evaluation of F 2 progeny confirmed that the resistance segregates as a single dominant gene. Genotyping of 9003 BC 2 F 2 progeny identified recombinants. Evaluation of recombinant BC 2 F 3 progeny narrowed the region of interest to 978 kbp. Two of the SNPs within this region proved to be diagnostic of CCN resistance across a wide range of barley germplasm. Fluorescence-based and gel-based assays were developed for these SNPs for use in marker-assisted selection. Within the candidate region of the reference genome, there are nine high-confidence predicted genes. Three of these, one that encodes RAR1 (a cysteine- and histidine-rich domain-containing protein), one that is predicted to encode an acetylglutamate kinase and one that is predicted to encode a tonoplast intrinsic protein, are discussed as candidate genes for CCN resistance. Electronic supplementary material The online version of this article (10.1007/s00122-019-03279-3) contains supplementary material, which is available to authorized users.

show abstract

Section: Resultsmentioning

confidence: 68%

Section: Methodsmentioning

confidence: 99%

Fine mapping of Rha2 in barley reveals candidate genes for resistance against cereal cyst nematode

et al. 2019

View full text Add to dashboard Cite

show abstract

“…More than 20 white females were produced on susceptible cultivars in six of the nine tests reported. Whilst experiments in which fewer than 20 white females per plant were produced are considered less reliable for accurately distinguishing resistant and susceptible phenotypes (Andersen & Andersen, 1982b), experiments with fewer white females on susceptible cultivars have been reported (Cotton, 1967;Lücke, 1976;O'Brien & Fisher, 1979).…”

Section: Discussionmentioning

confidence: 99%

Resistance of wheat, barley and oat to Heterodera avenae in the Pacific Northwest, USA

Smiley¹,

Yan

Pinkerton³

2011

Nematol

View full text Add to dashboard Cite

The cereal cyst nematode, Heterodera avenae, occurs in at least seven western states of the USA and reduces grain yield in localised regions and in selected crop management systems. Virulence phenotypes for H. avenae populations in North America have not been reported. Nine individual assays in six experiments were conducted to determine the reactions of barley, oat and wheat cultivars to five H. avenae populations in the Pacific Northwest (PNW) states of Idaho, Oregon and Washington. Three populations were evaluated for virulence to 23 entries of the 'International Test Assortment for Defining Cereal Cyst Nematode Pathotypes', plus selected local cultivars and entries representing a greater diversity of resistance genes. The virulence phenotype(s) for populations of H. avenae in the PNW did not correspond to any of the 11 pathotypes defined by the Test Assortment. Five PNW populations exhibited affinities with Group 2 but were not defined by pathotypes Ha12 and Ha22. Reproduction was prevented or greatly inhibited by barley carrying the Rha3 resistance gene and by most carriers of Rha2 resistance, and by selected oat cultivars with multigenic resistance. Wheat cultivars carrying the Cre1 resistance gene were highly effective in suppressing H. avenae reproduction. Current PNW wheat cultivars do not carry the Cre1 resistance gene. Crosses between Ouyen, an Australian bread wheat with Cre1 resistance, and several PNW wheat cultivars were resistant. The CreR gene also prevented H. avenae reproduction in the trial where it was tested. Intermediate levels of reproduction occurred on wheat cultivars carrying the Cre5, Cre7 and Cre8 resistance genes, each of which was considered useful for pyramiding into cultivars with Cre1 resistance. This research identified genetic resources of value in PNW cereal crop breeding programmes.

show abstract

“…Tahıl kist nematodlarının mücadelesinde en etkili yöntemlerden biri dayanıklı çeşitlerin kullanımıdır. Mümkünse dayanıklı olduğu belirlenen çeşitler tercih edilmelidir (Andersen, 1982;Williams ve ark., 2002). Konukçu bitkilerin mevcut olmaması durumunda nematodun yoğunluğu azalacağından ekim nöbeti bir diğer önemli mücadele yöntemidir.…”

Section: Mücadelesiunclassified

Çanakkale’nin Stratejik Sektörü Tarım 1

2023

View full text Add to dashboard Cite

Türkiye tarımsal üretim bakımından dünyada önde gelen ülkeler arasında yer almaktadır. Çanakkale ili sahip olduğu tarihi ve kültürel değerleri, ekolojik faktörleri ile bir tarım, kültür ve turizm kentidir. İlimizin temel ekonomik sektörü tarım olup, hammaddesi tarımsal ürünler olan, tarıma dayalı sanayide ilin ekonomisinde önemli rol oynamaktadır. İlimizde aktif nüfusun %35’i tarım sektöründe istihdam edilmektedir. Çanakkale sahip olduğu arazi varlığı, ekolojik özellikleri, bitkisel ve hayvansal üretim çeşitliliği, su ürünleri potansiyeli ve hayvan varlığı ile bölgesinde ve ülke genelinde önemli bir yere sahiptir. Tarımın, ülke genelindeki sorunları değişik oranlarda Çanakkale tarımına da yansımaktadır. Gelecekte de tarımsal üretimin ilin vi en önemli gelir faaliyetleri arasında yer alacağı düşünülmektedir. Tarım ve tarıma dayalı üretim devamlı olarak kendini yenilemekte, güncel koşullara göre uygulama biçimleri değişmektedir. Bu nedenle tarımsal üretim özelinde güncel gelişmeleri de dikkate alan kaynaklar gelecek vizyonu açısından ayrı bir öneme sahiptir. Çanakkale ilinin tarımsal üretiminin geçmişini, bugünü ve geleceğini ele almak amacıyla bu kaynak eser hazırlanmıştır. Toplam 38 bölümden oluşan bu kaynak kitap, bitkisel üretimden hayvansal üretime, ilin coğrafi işaretli ürünlerinden ekonomisine kadar birçok farklı konuda kapsamlı değerlendirmeler sunan bir eserdir

show abstract

Classification of Plants Resistant to Heterodera avenae1

Abstract: Differentiation of barley plants resistant to Heterodera avenae is simple when they are completely without cysts and the number of cysts is high on a susceptible control cultivar. Problems with classification are discussed.

Cited by 5 publications

References 4 publications

Fine mapping of Rha2 in barley reveals candidate genes for resistance against cereal cyst nematode

Fine mapping of Rha2 in barley reveals candidate genes for resistance against cereal cyst nematode

Resistance of wheat, barley and oat to Heterodera avenae in the Pacific Northwest, USA

Çanakkale’nin Stratejik Sektörü Tarım 1

Contact Info

Product

Resources

About