Screening for Greenbug Resistance in <i>Hordeum chilense</i> Roem et Schult.

Castro, Ana María; Martín, L. M.; Martín, António; Arriaga, H. O.; Tobes, N.; Almaraz, Laura Beatriz

doi:10.1111/j.1439-0523.1994.tb00663.x

Cited by 15 publications

(8 citation statements)

References 25 publications

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“…Schmal. (Joppa et al 1980, Martin et al 1982, Flinn et al 2001, Aegilops spelledoides Tausch (Tyler et al 1985), and Hordeum chilense Roem et Schult (Castro et al 1994).…”

mentioning

confidence: 99%

Characterization of Greenbug (Homoptera: Aphididae) Resistance in Synthetic Hexaploid Wheats

Lage¹,

Skovmand²,

Andersen³

2003

Journal of Economic Entomology

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Twelve greenbug (Schizaphis graminum (Rondani)) biotype E-resistant synthetic hexaploid wheats synthesized by crossing Triticum dicoccum Schrank. and Aegilops tauschii (Coss.) Schmal. were evaluated for the three known insect resistance categories, including antibiosis, anti-xenosis, and tolerance. Different methods were evaluated for calculating antibiosis and tolerance. Calculating intrinsic rate of population increase and measuring leaf chlorophyll content with a SPAD chlorophyll meter proved to be time- and labor-efficient for antibiosis and tolerance determination, respectively. The resistance in all synthetic hexaploids proved to be the result of a combination of antibiosis, antixenosis, and tolerance, which makes them valuable sources of greenbug resistance. To assist plant breeders in selecting the best germplasm for greenbug resistance, a plant resistance index was created that revealed differences among the synthetic hexaploid wheats.

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“…Schmal. (Joppa et al 1980, Martin et al 1982, Flinn et al 2001, Aegilops spelledoides Tausch (Tyler et al 1985), and Hordeum chilense Roem et Schult (Castro et al 1994).…”

mentioning

confidence: 99%

Characterization of Greenbug (Homoptera: Aphididae) Resistance in Synthetic Hexaploid Wheats

Lage¹,

Skovmand²,

Andersen³

2003

Journal of Economic Entomology

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“…Rubiales, unpubl. Jorgensen and Jensen 1976Clement and Lester 1990Castro et al 1994Person-Dedryver et al 1990 Jensen and Griffin 1994 Rubiales and Paez, unpubl. Rubiales and del Moral unpubl.…”

Section: Resistance To Bunts and Smutsmentioning

confidence: 99%

“…Levels of resistance to greenbug (Schizaphis graminum) have been reported to vary between H. chilense lines (CASTRO et al 1994). Antixenosis, antibiosis and tolerance mechanisms were detected.…”

Section: Resistance To Nematodes and Aphidsmentioning

confidence: 99%

Prospects for Exploitation of Disease Resistance from Hordeum Chilense in Cultivated Cereals

et al. 2004

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Hordeum chilense is a South American wild barley with high potential for cereal breeding given its high crossability with other members of the Triticeae. In the present paper we consider the resistance of H. chilense to several fungal diseases and the prospects for its transference to cultivated cereals.All H. chilense accessions studied are resistant to the barley, wheat and rye brown rusts, the powdery mildews of wheat, barley, rye and oat, to Septoria leaf blotch, common bunt and to loose smuts, which suggests that H. chilense is a non-host of these diseases. There are also lines resistant to wheat and barley yellow rust, stem rust and to Agropyron leaf rust, as well as lines giving moderate levels of resistance to Septoria glume blotch, tan spot and Fusarium head blight. Some H. chilense lines display pre-appressorial avoidance to brown rust. Lines differ in the degree of haustorium formation by rust and mildew fungi they permit, and in the degree to which a hypersensitive response occurs after haustoria are formed.Unfortunately, resistance of H. chilense to rust fungi is not expressed in tritordeum hybrids, nor in chromosome addition lines in wheat. In tritordeum, H. chilense contributes quantitative resistance to wheat powdery mildew, tan spot and loose smut. The resistance to mildew, expressed as a reduced disease sekrity, is not associated with macroscopically visible necrosis. Hexaploid tritordeums are immune to Septoria leaf blotch and to common bunt although resistance to both is slightly diluted in octoploid tritordeums. Studies with addition lines in wheat indicate that the resistance of H . chilense to powdery mildew, Septoria leaf blotch and common bunt is of broad genetic basis, conferred by genes present on various chromosomes.

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“…is a diploid South American wild barley containing genes potentially useful for wheat breeding. Genes for several agronomically important traits such as those controlling tolerance to salt (Forster et al 1990), resistance to the root-knot nematode Meloidogyne naasi (PersonDedryver et al 1990) and resistance to greenbug (Schizaphis graminum) (Castro et al 1994) are located on chromosome 1H ch . In addition to contributing to abiotic and biotic stresses, H. chilense could widen the genetic basis for grain quality traits of common wheat (Triticum aestivum ssp.…”

Section: Introductionmentioning

confidence: 99%

Sub-arm location of prolamin and EST-SSR loci on chromosome 1Hch from Hordeum chilense

et al. 2010

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Hordeum chilense Roem. et Schult. is a diploid wild South American barley that contains genes of interest for cereal breeding, many of them located on chromosome 1H ch . In the current study, two H. chilense-wheat addition lines with deletions in the 1H ch chromosome were used for sub-arm localization of five prolamin (glutenin and gliadin) loci and 33 EST-SSR marker loci on chromosome 1H ch . The two sets of markers were distributed across five sub-arm chromosome regions. Three glutenin loci (Glu-H ch 2, Glu-H ch 3, Glu-H ch 4) together with the gliadin locus Gli-H ch 1 were located on the distal 20% of the 1H ch S arm, whereas the glutenin locus Glu-H ch 1 was on the proximal 88% region of 1H ch L. Among 33 EST-SSR marker loci, 7 (21.2%) were on the 1H ch S arm and, of them, 3 (9.1%) were on the distal 20% end and 4 (12.1%) on the proximal 80% region. The 26 loci (78.8%) on 1H ch L were distributed across three different regions: 18 (78.8%) in the proximal 88%, 3 (9.1%) in the distal 12% and 5 (15.2%) in a region less than 12% from the distal end. The deletions in the 1H ch chromosome added to the common wheat background were thus shown to be useful for determining the sub-arm location of EST-SSR and prolamin loci. This could facilitate the identification of molecular markers linked to genes of agronomic interest and the isolation of such genes for use in common wheat improvement.

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Screening for Greenbug Resistance in Hordeum chilense Roem et Schult.

Cited by 15 publications

References 25 publications

Characterization of Greenbug (Homoptera: Aphididae) Resistance in Synthetic Hexaploid Wheats

Characterization of Greenbug (Homoptera: Aphididae) Resistance in Synthetic Hexaploid Wheats

Prospects for Exploitation of Disease Resistance from Hordeum Chilense in Cultivated Cereals

Sub-arm location of prolamin and EST-SSR loci on chromosome 1Hch from Hordeum chilense

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