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Titolo:
CROSS-RESISTANCE OF SEVERAL DICLOFOP-RESISTANT WILD OAT (AVENA-FATUA)BIOTYPES FROM THE WILLAMETTE VALLEY OF OREGON
Autore:
SEEFELDT SS; GEALY DR; BREWSTER BD; FUERST EP;
Indirizzi:
USDA ARS PULLMAN WA 99164 WASHINGTON STATE UNIV,DEPT CROP & SOIL SCI PULLMAN WA 99164 OREGON STATE UNIV,DEPT CROP SCI CORVALLIS OR 97331
Titolo Testata:
Weed science
fascicolo: 3, volume: 42, anno: 1994,
pagine: 430 - 437
SICI:
0043-1745(1994)42:3<430:COSDWO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACETYL-COA CARBOXYLASE; HERBICIDE-RESISTANT;
Keywords:
AVEFA; ARYLOXYPHENOXYPROPRIONATE; CYCLOHEXANEDIONE; DOSE RESPONSE CURVES; HERBICIDE RESISTANCE; LOG-LOGISTIC MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
S.S. Seefeldt et al., "CROSS-RESISTANCE OF SEVERAL DICLOFOP-RESISTANT WILD OAT (AVENA-FATUA)BIOTYPES FROM THE WILLAMETTE VALLEY OF OREGON", Weed science, 42(3), 1994, pp. 430-437

Abstract

The first occurrences of wild oat resistance to diclofop in the Willamette Valley of Oregon were reported in 1990. Among eight resistant biotypes, GR50 values for diclofop were 3 to 64 times greater than the GR50 for a susceptible wild oat biotype. GR50 Values for other aryloxyphenoxypropionate herbicides varied from 1 to over 100 times greater than a susceptible biotype. Only one resistant biotype was resistant to cyclohexanedione herbicides, and this was only a three-fold increase in GR50. Except for one biotype that had a low level of resistance to pronamide, none of the wild oat biotypes were cross-resistant to any other commonly used wild oat herbicide. Levels of resistance and cross-resistance did not follow a consistent pattern among biotypes in this study, suggesting more than one resistance trait. There were significant differences in the light use efficiency, height, dry weight, leaf area, and extent and timing of tillering and flowering of four wild oat biotypes studied. These physiological and morphological differences suggest that these resistant biotypes were selected independently. The diversity of resistance patterns and the coevolution of resistance at several locations will add to the difficulty of resistance management.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 17:54:31