CAJ | 학술논문

采用实验室内植物块茎培养沉水植物的实验方法，研究了不同质量浓度Pb2＋胁迫下龙须眼子菜的生长状况及光合作用参数的变化。结果表明：随着Pb2＋浓度的提高，植株高度受到抑制、叶片黄化、植株根部部分变灰腐烂；叶绿素含量显著降低且与铅浓度呈现显著负相关；核酮糖二磷酸羧化酶活性先升高后降低，酶活性与Pb2＋浓度呈显著负相关；磷酸烯醇式丙酮酸羧化酶活性变化小；碳酸酐酶活性先降低后上升。
채용실험실내식물괴경배양침수식물적실험방법，연구료불동질량농도Pb2＋협박하룡수안자채적생장상황급광합작용삼수적변화。결과표명：수착Pb2＋농도적제고，식주고도수도억제、협편황화、식주근부부분변회부란；협록소함량현저강저차여연농도정현현저부상관；핵동당이린산최화매활성선승고후강저，매활성여Pb2＋농도정현저부상관；린산희순식병동산최화매활성변화소；탄산항매활성선강저후상승。
Using the experiment method of tuber culture in the laboratory,the photosynthesis effects and physiologi-cal response of the aquatic macrophyte Potamogeton pectinatus were investigated in Pb2+with different concentrations. The results showed that the Potamogeton pectinatus growth was inhibited with the increase of the concentration, chloro-phyll content reduced significantly and showed negative correlation with Pb2+ concentrations, RuBPc activity first in-creased and then decreased,and it was negatively correlated with Pb2+ concentrations, PEPc activity changed little, CA activity first decreased and then increased.