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Titolo:
INFLUENCE OF OZONE AND ETHYLENEDIUREA (EDU) ON GROWTH AND YIELD OF BEAN (PHASEOLUS-VULGARIS L) IN OPEN-TOP FIELD CHAMBERS
Autore:
BRUNSCHONHARTI S; FANGMEIER A; JAGER HJ;
Indirizzi:
UNIV GIESSEN,INST PLANT ECOL,HEINRICH BUFF RING 38 D-35392 GIESSEN GERMANY
Titolo Testata:
Environmental pollution
fascicolo: 1, volume: 90, anno: 1995,
pagine: 89 - 94
SICI:
0269-7491(1995)90:1<89:IOOAE(>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEW-JERSEY; AMBIENT OZONE; WOODY-PLANTS; IMPACT; SENSITIVITY; VEGETATION; RADISH; CROPS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
S. Brunschonharti et al., "INFLUENCE OF OZONE AND ETHYLENEDIUREA (EDU) ON GROWTH AND YIELD OF BEAN (PHASEOLUS-VULGARIS L) IN OPEN-TOP FIELD CHAMBERS", Environmental pollution, 90(1), 1995, pp. 89-94

Abstract

Greenhouse and ambient air experiments have shown ethylene diurea (EDU) to be a strong and specific protective suppressant of ozone injury in plants. To examine how EDU affects plant responses to various ozone(O-3) levels under controlled field conditions, Phaseolus vulgaris L.cv. Lit was treated with 150 ppm EDU every 14 days and exposed in open-top chambers to charcoal-filtered air (CF), nonfiltered air (NF) or two cf treatments with ozone added. The ozone treatments were proportional additions of one (CF1) and two (CF2) times ambient ozone levels. The mean ozone concentrations in the CF, NF, CF1 and CF2 treatments were 0.98, 14.1, 14.98 and 31.56 nl litre(-1). A two-way split plot ANOVA revealed that shoot dry weight was significantly reduced by ozone. EDU treatment was highly significant for leaf dry weight, root dry weight and shoot dry weight, but not for pod dry weight; leading to a higher biomass of EDU-treated plants. Ozone/EDU interactions were significant for root weight only, indicating that EDU reduced growth suppression by ozone. These results show that EDU action on plant biomass couldbe interpreted as a delay in senescence since EDU-treated plants showed a significant decreased biomass loss even in the CF treatment.

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Documento generato il 07/07/20 alle ore 11:16:28