CAJ | 학술논문

通过实验方法测定了土壤Pb含量对栀子幼苗生长量和生理特性的影响，以及栀子幼苗对土壤Pb吸收富集特征。结果表明，随土壤Pb含量升高，栀子幼苗生物量、株高、叶绿素和可溶性糖含量降低；SOD、POD、CAT活性和MDA含量随土壤Pb含量的升高而升高。统计分析表明，各实验组间存在显著差异，当土壤Pb含量高于1045 mg/kg，差异达极显著水平，栀子幼苗生物量与幼苗生理指标存在显著相关性；栀子幼苗根、茎、叶中对Pb的富集随土壤Pb含量升高而增加，栀子根是土壤Pb最主要的吸收部位。土壤Pb含量在1045 mg/kg以下，栀子幼苗能够正常生长生存；当土壤Pb含量高于1045 mg/kg，栀子幼苗自身调节抵抗能力降低，其生理反应和生长均受到抑制。
통과실험방법측정료토양Pb함량대치자유묘생장량화생리특성적영향，이급치자유묘대토양Pb흡수부집특정。결과표명，수토양Pb함량승고，치자유묘생물량、주고、협록소화가용성당함량강저；SOD、POD、CAT활성화MDA함량수토양Pb함량적승고이승고。통계분석표명，각실험조간존재현저차이，당토양Pb함량고우1045 mg/kg，차이체겁현저수평，치자유묘생물량여유묘생리지표존재현저상관성；치자유묘근、경、협중대Pb적부집수토양Pb함량승고이증가，치자근시토양Pb최주요적흡수부위。토양Pb함량재1045 mg/kg이하，치자유묘능구정상생장생존；당토양Pb함량고우1045 mg/kg，치자유묘자신조절저항능력강저，기생리반응화생장균수도억제。
This research studies the effects on content of soil heavy metal ( Pb) leading to the biomass and physi-ological characteristics as well as characteristics of absorption enrichment of Gardeina Jasminoides Ellis seedling . The result suggests that with the increase of Pb the biomass , the height , the content of chlorophyll and soluble sugar of seedling of Gardeina Jasminoides Ellis decreased;while the activity of SOD , POD, CAT and content of MDA increased.When soil Pb concentration is above 1045 mg/kg, there are significant differences among the experimental groups , and there are also significant correlation relationships between the biomass and physiologi -cal indexes of Gardeina Jasminoides Ellis seedling .The concentration of Pb in root , stem and leaf of seedling of Gardeina Jasminoides Ellis increases as the concentration of Pb increasing and root is the major tissue for Pb ab-sorption .The seedlings of Gardeina Jasminoides Ellis can maintain normal growth when the concentration of Pb in soil is less than 1045 mg/kg.But when the concentration of Pb in soil is above 1045 mg/kg, the ability of self-regulation of Gardeina Jasminoides Ellis seedling becomes weaker and its physiological responses as well as growth are inhibited .