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Titolo:
Near-isogenic lines for Triticum aestivum height and crop competitiveness
Autore:
Seefeldt, SS; Ogg, AG; Hou, YS;
Indirizzi:
AgRes, Ruakura Agr Res Ctr, Hamilton, New Zealand AgRes Hamilton New Zealand , Ruakura Agr Res Ctr, Hamilton, New Zealand Natl A Cylindrica Res Program, Ten Sleep, WY 82442 USA Natl A Cylindrica Res Program Ten Sleep WY USA 82442 Sleep, WY 82442 USA Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA Washington State Univ Pullman WA USA 99164 oil Sci, Pullman, WA 99164 USA
Titolo Testata:
WEED SCIENCE
fascicolo: 3, volume: 47, anno: 1999,
pagine: 316 - 320
SICI:
0043-1745(199905/06)47:3<316:NLFTAH>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
GOATGRASS AEGILOPS-CYLINDRICA; WHEAT;
Keywords:
growth rate; yield; isolines; AEGCY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Seefeldt, SS AgRes, Ruakura Agr Res Ctr, Private Bag 3123, Hamilton, New Zealand AgRes Private Bag 3123 Hamilton New Zealand on, New Zealand
Citazione:
S.S. Seefeldt et al., "Near-isogenic lines for Triticum aestivum height and crop competitiveness", WEED SCI, 47(3), 1999, pp. 316-320

Abstract

Near isolines of 'Nugaines' winter Triticum aestivum chat differed in height were planted with and without Aegilops cylindrica to determine the effect of plant height on competition against A. cylindrica. The isolines had either reduced height gene Rht(1), Rht(2), Rht(1) plus Rht(2), or neither Rhtgenes and averaged 73, 77, 51, and 101 cm tall, respectively, when grown with or without competition from A. cylindrica. Plants with fewer reduced height genes had the faster rates of height and weight gain, which are important: traits for enhanced competitiveness. When growing in competition with A. cylindrica, the shortest isoline allowed the greatest amount of A. cylindrica seed production but did not have the lowest T. aestivum yield. However, when compared to the A. cylindrica-free control, the shortest isoline had the greatest percent yield loss. The tallest isoline reduced A. cylindrica seed production the most, and T aestivum yield reduction due to A. cylindrica on a percent basis was the least when averaged over 2 yr. When competing against A. cylindrica, the tallest isoline did not always have the largest yield and yield parameters, and the shortest isoline did not always havethe smallest yield and yield parameters. There is a cost to the T. aestivum plant to produce extra stem biomass that may reduce yield potential of taller plants and reduce the advantage gained by being taller than the surrounding weeds.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 09:28:51