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Titolo:
Breeding for end-use quality: Reflections on the Nebraska experience
Autore:
Baenziger, PS; Shelton, DR; Shipman, MJ; Graybosch, RA;
Indirizzi:
Univ Nebraska, Lincoln, NE 68583 USA Univ Nebraska Lincoln NE USA 68583Univ Nebraska, Lincoln, NE 68583 USA USDA ARS, Washington, DC 20250 USA USDA ARS Washington DC USA 20250USDA ARS, Washington, DC 20250 USA
Titolo Testata:
EUPHYTICA
fascicolo: 1-2, volume: 119, anno: 2001,
pagine: 95 - 100
SICI:
0014-2336(2001)119:1-2<95:BFEQRO>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLOUR PROTEIN-COMPOSITION; WINTER-WHEAT; ENVIRONMENTAL MODIFICATION; PERFORMANCE;
Keywords:
genotypic and phenotypic selection; glutenin subunits; wheat breeding;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Baenziger, PS Univ Nebraska, Lincoln, NE 68583 USA Univ Nebraska Lincoln NE USA 68583 a, Lincoln, NE 68583 USA
Citazione:
P.S. Baenziger et al., "Breeding for end-use quality: Reflections on the Nebraska experience", EUPHYTICA, 119(1-2), 2001, pp. 95-100

Abstract

Every cultivar released in Nebraska must have four characteristics: improved agronomic performance relative to existing cultivars, exceptional winterhardiness, resistance to Puccinia graminis (the causal agent of stem rust),and acceptable end-use quality. This paper will discuss our strategy for breeding cultivars with acceptable end-use quality. All experimental lines are derived from crosses with at least one or more parents with acceptable end-use quality. As soon as individual lines are identified (F-5) generation, microquality analyses are conducted and approximately 10% are discarded on the basis of poor end-use quality. In the F-6 and later generations, samples are composited from three or more locations/year, milled on a Buhler Mill, and baked using 100 g of flour per loaf. Though genotype-by-environmental interactions are large for end-use quality traits, composite samples aresatisfactory for determining the end-use quality when repeated over time. By using phenotypic selection, the program has released cultivars with acceptable quality involving known `poor' quality genes and chromosomes, such as high-molecular weight (HMW) glutenin subunits 2+12 (Scout 66 and Lancota), 1BL.1RS (heterogeneous in Rawhide and homogeneous in Cougar), and 1AL.1RS(heterogeneous in Nekota and Niobrara). Phenotypic selection is preferred to genotypic selection.

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Documento generato il 02/07/20 alle ore 22:09:39