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Titolo:
PHYSIOLOGICAL-BASIS FOR DIFFERENTIAL SENSITIVITY TO SULFENTRAZONE BY SICKLEPOD (SENNA-OBTUSIFOLIA) AND COFFEE SENNA (CASSIA-OCCIDENTALIS)
Autore:
DAYAN FE; WEETE JD; HANCOCK HG;
Indirizzi:
AUBURN UNIV,DEPT BOT & MICROBIOL AUBURN AL 36849 FMC CORP HAMILTON GA 31811
Titolo Testata:
Weed science
fascicolo: 1, volume: 44, anno: 1996,
pagine: 12 - 17
SICI:
0043-1745(1996)44:1<12:PFDSTS>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOYBEAN GLYCINE-MAX; PROTOPORPHYRINOGEN OXIDASE; ARYL HYDROXYLATION; METABOLISM; HERBICIDES; ENZYME; TARGET; WHEAT; CHLOROPLASTS; CLOMAZONE;
Keywords:
I SULFENTRAZONE TECHNICAL GRADE (98.2-PERCENT), XO-1H-1,2,4-TRIAZOL-1-YL]PHENYL]METHANESULFONAMIDE; 3-HYDROXYMETHYL DERIVATIVE (97.2-PERCENT), XO-1H-1,2,4-TRIAZOL-1-YL]PHENYL]METHANESULFONAMIDE; 3-CARBOXYLIC ACID DERIVATIVE (95.2-PERCENT), XO-1H-1,2,4-TRIAZOL-1-YL]PHENYL]METHANESULFONAMIDE; 3-DESMETHYL DERIVATIVE (95.6-PERCENT), OXO-1H-1,2,4-TRIAZOL-1-YL]PHENYLMETHANESULFONAMIDE; 5'-AMINO DERIVATIVE (91.7-PERCENT), HYDRO-3-METHYL-5-OXO-1H-1,2,4-TRIAZOL-1-YL]ANILINE; COFEE SENNA, CASSIA OCCIDENTALIS L CASOC; SICKLEPOD, SENNA OBTUSIFOLIA (L) IRWIN AND BARNEBY CASOB; HERBICIDE; METABOLISM; TOLERANCE; CASOB; CASOC;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
F.E. Dayan et al., "PHYSIOLOGICAL-BASIS FOR DIFFERENTIAL SENSITIVITY TO SULFENTRAZONE BY SICKLEPOD (SENNA-OBTUSIFOLIA) AND COFFEE SENNA (CASSIA-OCCIDENTALIS)", Weed science, 44(1), 1996, pp. 12-17

Abstract

Consistent with field observations, sicklepod exhibited considerable tolerance to sulfentrazone, and coffee senna showed relatively high sensitivity to this herbicide in greenhouse tests. Germination was not inhibited in either species at up to 12.9 mu M of the herbicide. However, the chlorophyll content of herbicide-treated coffee senna cotyledonary leaves was greatly reduced, and seedlings died within 10 d after treatment, while sicklepod seedlings were not visibly affected. Shoot height of coffee senna was inhibited 90% by sulfentrazone at 0.5 kg ai ha(-1), while the growth of sicklepod was not affected up to 2.0 kg aiha(-1). Root uptake of radiolabeled sulfentrazone was 74% greater in coffee senna than sicklepod, but the amount of radioactivity recoveredfrom the shoots of both species after 12 h was not different. Eighty-three percent of the parent compound remained in coffee senna leaf tissue after 9 h root exposure to the herbicide. In contrast, sicklepod took up relatively less sulfentrazone through the root and metabolized sulfentrazone in the foliage more rapidly than coffee senna, with 91.6% of the herbicide being metabolized during the first 9 h of exposure. These results suggest that the tolerance of sicklepod to sulfentrazone is primarily due to a relatively high rate of metabolism of the herbicide compared to coffee senna.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 15:05:46