Abstract:ABSTRACIPea (Pisum sativum L. cv Alsweet) plants were exposed to mixtures ofozone plus sulfur dioxide at different times of the day. InJury, evaluated either as necrosis or chlorophyll, was greatest at midday when stomatal conductance was greatest. Abscisic acid levels were similar over the day, and showed no relation to stomatal conductance.Investigations of pollutant exposure at different times of the day have been undertaken with 03 and SO2 singly (5). As early as 1949, Katz (10) showed that barley and alf… Show more
“…However, our results did not support this process. In fact, several studies also reported no increase of ABA concentration after O 3 exposure (Kobriger et al, 1984;Mao et al, 2017). Foliar ABA contents increased in N80 treated poplar leaves.…”
Section: Effects Of Ozone Nitrogen and Phosphorus On Leaf Ethylene Em...mentioning
“…However, our results did not support this process. In fact, several studies also reported no increase of ABA concentration after O 3 exposure (Kobriger et al, 1984;Mao et al, 2017). Foliar ABA contents increased in N80 treated poplar leaves.…”
Section: Effects Of Ozone Nitrogen and Phosphorus On Leaf Ethylene Em...mentioning
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