The Effects of Cadmium on Seed Germination and Growth of Sunflower and Rape

카드뮴이 해바라기와 유채 발아 및 성장에 미치는 영향

  • 이광근 (서울대학교 공과대학 건설환경공학부) ;
  • 조한상 (한국환경산업기술원) ;
  • 김재영 (서울대학교 공과대학 건설환경공학부)
  • Received : 2009.12.07
  • Accepted : 2009.12.15
  • Published : 2010.02.28


Sunflower (Sunking4505) and Rape (Sunmang) are oil-seeds containing high oleic acid, and these are used for the production materials of bio-diesel and applying for phytoremediation. The effect of cadmium on germination rate and the growth of the plants is evaluated. Object seeds were placed in Cd (0, 1.5, 4, 12, 30, 60, 100, 150, 300, 500 mg/L) solutions for seven days, and germination rate, root length, shoot length, seedling length, and dry weight were observed. $IC_{50}$, seedling vigor index, and tolerance indices were computed, and data were statistically analyzed by Analysis of Variance (ANOVA). Germination rate as well as root, shoot, and seedling length decreased as the cadmium concentration increased except dry weight. The $IC_{50}$ of sunflower and rape are 112 and 10 mg-Cd/L, respectively. Only one of the sunflower seeds is germinated at 500 mg-Cd/L whereas rape seeds are not germinated more than 150 mg-Cd/L solution. Root has higher cadmium sensitivity than shoot, and sunflower has higher germination rate, growth, and seedling vigor index than rape. In case of tolerance indices, sunflower has lower value than rape at relatively low concentration, but has higher value at high concentration.


Supported by : 환경부


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