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Titolo:
INHERITANCE OF DICLOFOP RESISTANCE IN WILD OAT (AVENA-FATUA L.) BIOTYPES FROM THE WILLAMETTE VALLEY OF OREGON
Autore:
SEEFELDT SS; HOFFMAN DL; GEALY DR; FUERST EP;
Indirizzi:
WASHINGTON STATE UNIV,USDA ARS PULLMAN WA 99164 ARS,USDA ABERDEEN ID 83210 ARS,USDA STUTTGART AR 72160 WASHINGTON STATE UNIV,DEPT SOIL & CROP SCI PULLMAN WA 99164
Titolo Testata:
Weed science
fascicolo: 2, volume: 46, anno: 1998,
pagine: 170 - 175
SICI:
0043-1745(1998)46:2<170:IODRIW>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACETYL-COA CARBOXYLASE; STARCH-GEL ELECTROPHORESIS; STERILIS SSP LUDOVICIANA; HERBICIDE RESISTANCE; INHIBITOR RESISTANCE; CROSS-RESISTANCE; ARYLOXYPHENOXYPROPIONATE; POPULATIONS; MECHANISM; BUFFERS;
Keywords:
DICLOFOP; FENOXAPROP; WILD OAT AVENA FATUA L. AVEFA; CULTIVATED OAT AVENA SATIVA L. AVESA; ARYLOXYPHENOXYPROPIONATE; ACCASE; ACETYL-COA CARBOXYLASE; AVEFA; AVESA; HERBICIDE RESISTANCE; GENETICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
S.S. Seefeldt et al., "INHERITANCE OF DICLOFOP RESISTANCE IN WILD OAT (AVENA-FATUA L.) BIOTYPES FROM THE WILLAMETTE VALLEY OF OREGON", Weed science, 46(2), 1998, pp. 170-175

Abstract

Inheritance of resistance to diclofop was studied in three wild oat biotypes (designated B, C, and H) from the Willamette Valley of Oregon. Cultivated oat (cultivar 'Monida') was crossed, including reciprocals, to three wild oat biotypes. Leaves of each F-1 plant were spotted with diclofop as a nondestructive test for resistance or susceptibility. All F-1 hybrids were resistant, indicating that resistance is dominant and is under nuclear control. The F-2 plants where Monida was the maternal parent were screened with diclofop, and F-2 plants of the Monida/C cross were screened with fenoxaprop because the parent C biotype was resistant to fenoxaprop. At lower doses, a 3:1 (R:S) segregation ratio in F-2 was observed and at higher doses a 1:3 (R:S) segregation ratio was often observed. The F-2:3 families segregated in a 1:2:1 (all resistant: segregating resistant and susceptible all susceptible) ratio when treated with a 1.1-kg ae ha(-1) dose of diclofop. This confirmsthat resistance to diclofop in the B, C, and H biotypes is primarily under monogenic control, with resistance being dominant to susceptibility at lower herbicide doses. At increased doses, susceptibility becomes dominant. Knowledge of the inheritance of resistance may help in the development of containment measures to prevent the spread of herbicide-resistance genes.

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Documento generato il 21/09/20 alle ore 18:44:33