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当前位置: 首页 > 文章 > 锌胁迫对薏苡种子萌发和幼苗生长的影响 北方园艺 2020 (2) 113-118
Position: Home > Articles > Effects of Zinc Stress on Seed Germination and Seedling Growth of Job′s Tears Northern Horticulture 2020 (2) 113-118

锌胁迫对薏苡种子萌发和幼苗生长的影响

作  者：
钟静;王亮节;曾国平;黄纯
单  位：
湖北第二师范学院植物抗癌活性物质提纯与应用湖北省重点实验室
关键词：
薏苡;种子萌发;幼苗生长;锌胁迫
摘  要：
以薏苡种子为试材,采用室内发芽试验,研究了不同程度锌胁迫对薏苡种子萌发和幼苗生长的影响,以期为探究薏苡抵抗重金属锌胁迫的可能机制提供参考依据。结果表明:高浓度硫酸锌(80 mg·L~(-1)和100 mg·L~(-1))导致薏苡种子发芽率、发芽势和发芽指数的显著降低;但是低浓度硫酸锌(20 mg·L~(-1))即可明显抑制幼苗的生长,其中硫酸锌对根的影响要远大于对苗高的影响。随着硫酸锌浓度的升高,丙二醛含量和叶片相对电导率先轻微下降后逐渐显著升高,超氧化物歧化酶活性则先微弱上升后显著下降;脯氨酸含量随着硫酸锌浓度的升高而上升,而叶绿素a、叶绿素b和类胡萝卜素含量均随着硫酸锌浓度的升高而显著下降。
译  名：
Effects of Zinc Stress on Seed Germination and Seedling Growth of Job′s Tears
作  者：
ZHONG Jing;WANG Liangjie;ZENG Guoping;HUANG Chun;Hubei key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients,Hubei University of Education;
关键词：
job′s tears;;seed germination;;seedling growth;;zinc stress
摘  要：
Job′s tears was used as materials,a field of experiment was carried out to study the effects of zinc stress on seed germination and seedling growth of Job′s tears in greenhouse.In order to provide some reference for exploring the possible mechanism of Job′s tears resistance to heavy metal zinc stress.The results indicated that high concentration of zinc sulfate(80 mg·L~(-1) and 100 mg·L~(-1)) presented a significant decrease in germination rate,germination potential and germination index;however,low concentration of zinc sulfate(20 mg·L~(-1)) could significantly inhibit the growth of seedlings,and the effect of zinc sulfate on roots was much greater than that on seedlings.With the increase of zinc sulfate concentration,MDA content and relative conductivity of leaves decreased slightly at first and then increased significantly,while SOD activity increased slightly at first and then decreased significantly.With the increase of zinc sulfate concentration proline content increasd,while chlorophyll a、chlorophyll b and carotenoid content decreased significantly.

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