섬유

effects of ozone on the growth, yield, and partitioning of dry matter in cotton

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 252
cotton (gosspium hirsutum l. ) alcala sj-2 was grown in an activated carbon-filtered greenhouse and exposed to biweekly 6-hour ozone fumigations at a concentration of 490 $mu$ g m** $minus$ **3 two ozone treatments were used, differing in age at initial exposure and total ozone dose. sacrificial harvests were taken from all treatments at 14-day intervals to monitor plant response and to provide the basis for growth analysis techniques. ozone reduced the vegetative growth and boll production in both ozone treatments. the dry weights of all partitioned plant parts were reduced with the largest reductions occurring in roots and bolls. fumigated plants initially produced fewer leaves with significantly less leaf area. a period of stimulated leaf and branch production followed the initial growth depression. 24 refs
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