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한국생태학회 / v.21, no.3, 1998년, pp.179-186 
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Pb처리에 따른 전동싸리 유식물의 생장적응과 증금속의 조절
( Regulation of heavy metal and Growth Adaptation of Meliotus suaveolens Seedlings Treated with Pb ) |
| 박태규;송승달; 경북대학교 자연과학대학 생물학과;경북대학교 자연과학대학 생물학과;
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| 초 록 |
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| Effects of lead(Pb) and calcium(Ca) on growth responses, accumulation of heavy metals and nitrogen fixation activities of Melilotus suaveolens seedlings were quantitatively analyzed during growing period. Pb contents of the root treated with 30, 100 ppm Pb and 100 ppm Pb added 100 ppm Ca were 54.1, 90.9 and 26.1 folds higher than that of the control, respectively, at pH 4.2 in 28th days, and heavy metal content of plant increased with increasing of pH and Pb concentration. The melilot plant was classified as a Pb accumulator by higher accumulation of Pb in shoot than that of root. Pb treatments resulted in inhibiton of height and chlorophyll contet, and Ca treatment increased height and chlorophyll content insignificantly at pH 4.2 in 28 days. The plant biomass reduced 49, 60 and 54% at pH 4.2 and 47,53 and 50% at pH 6.5, respectively, by 30, 100 ppm Pb and 100 ppm Pb added 100 ppm Ca treatment. Specific nitrogen fixation of nodules reduced 68.4% and 46.6% by 100 ppm Pb treatment and 3.7% and 24.9% by 100 ppm Pb added 100 ppm Ca at pH 4.2 and pH 6.5, respectively, so Ca inhibited significantly Pb activity and toxicity in acdic pH. Nodule formation were reduced to 33, 33 and 50% at pH 4.2 and 50, 33 and 38% at pH 6.5 by 30, 100 ppm Pb and 100 ppm Pb added 100 ppm Ca, respectively. |
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| 키워드 |
| pH;Pb;Ca;Melilotus suaveolens;Growth;Nitrogen fixation;Heavy metal; |
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The Korean Journal of Ecology / v.21, no.3, 1998년, pp.179-186
한국생태학회
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811919963096)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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