Effects of low levels of ozone on Pinto beans, Phaseolus vulgaris L

摘要: Fourteen day old Pinto beans (Phaseolus vulgaris L.) were fumigated continuously from 1 to 5 days with .05 ppm ozone. The unifoliate leaves after 3 of fumigation exhibited premature senescence. This effect was not increased by longer fumigation. Lateral buds in the axils stimulated elongate, whereas reduced size and weight. Avena coleoptile straight growth tests made test possible relation presence auxin-like material leaf senescence bud elongation. Although definite activity observed, data did suggest a mechanism for or elongation buds.