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Titolo:
Characterizing traits that enhance the competitiveness of winter wheat (Triticum aestivum) against jointed goatgrass (Aegilops cylindrica)
Autore:
Ogg, AG; Seefeldt, SS;
Indirizzi:
AgRes, Ruakura Agr Res Ctr, Hamilton, New Zealand AgRes Hamilton New Zealand , Ruakura Agr Res Ctr, Hamilton, New Zealand Natl Jointed Goatgrass Res Program, Ten Sleep, WY 82442 USA Natl Jointed Goatgrass Res Program Ten Sleep WY USA 82442 p, WY 82442 USA
Titolo Testata:
WEED SCIENCE
fascicolo: 1, volume: 47, anno: 1999,
pagine: 74 - 80
SICI:
0043-1745(199901/02)47:1<74:CTTETC>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
YIELD;
Keywords:
Bromoxynil; ethyl-metribuzin; thifensulfuron; tribenuron; jointed goatgrass; Aegilops cylindrica Host AEGCY; winter wheat, Triticum aestivum L.; growth rate; height; path analysis; tillers; water use; AEGCY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
14
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:
A.G. Ogg e S.S. Seefeldt, "Characterizing traits that enhance the competitiveness of winter wheat (Triticum aestivum) against jointed goatgrass (Aegilops cylindrica)", WEED SCI, 47(1), 1999, pp. 74-80

Abstract

Our objective was to identify traits in winter wheat important to competitiveness against jointed goatgrass, measured as increased wheat yields and reduced jointed goatgrass seed production. Jointed goatgrass is an importantwinter annual grass weed that cannot be controlled selectively in winter wheat. Seven cultivars of soft white winter wheat were grown with and without competition From jointed goatgrass over two growing seasons. Measurementsof numerous traits of winter wheat and jointed goatgrass were recorded throughout each growing season. The data were analyzed using path analysis with latent variables to determine which traits most enhanced competitiveness. In a drier year, increased rate of height development was important in maintaining wheat yields when wheat was growing in competition with jointed goatgrass. Increased rare of height development also was an important trait in reducing jointed goatgrass seed production. In a wet year compared to a dry year, the number of wheat heads per plant, the rate of water use, and weight gain were positively correlated to maintaining winter wheat yields. Jointed goatgrass seed production in the wet year was reduced overall compared to the dry year, but From the cultivars tested, there were no trails identified that were critical in enhancing this loss of seed production. This study suggests that cultivars with greater height development rates will be more competitive when growing in fields infested with jointed goatgrass.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 19:16:33