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首页> 外文会议>International Conference on Material Science, Environment Science and Computer Science >Growth effects of Pb stress on Seedling of Lactuca sativa L. and Brassica Campestris L.ssp
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Growth effects of Pb stress on Seedling of Lactuca sativa L. and Brassica Campestris L.ssp

机译：PB胁迫对乳酸酸幼苗的生长效应和芸苔Campestris L.SSP

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In order to understand the effects of lead on the growth of Lactuca sativa L. and Brassica Campestris L. ssp, the change of growth index of seedling was studied under lead stress (different concentrations of lead nitrate solution), and by soilless cultivation of seedlings in pots and in greenhouse. The results showed that two kinds of plant growth were affected by lead stress of different level, the growth speed of seedlings reduced but a great number of growth index were increased, in addition to fresh weight and dry weight of stem and leaf.The leaf number, leaf area, plant height and the fresh weight, dry weight of stem and leaf in Lactuca sativa L. were declined obviously, and the fresh weight, dry weight of roots were increased under higher levels of lead treatment at the same time. The each growth index of Brassica Campestris L. ssp was decreased in higher concentration of lead treatment. The growth of Lactuca sativa L. was slightly better and Brassica Campestris L. was slightly lower than control under 0.005 mg/L lead treatment. So, Lactuca sativa L. was more sensitive in low concentrations of lead than Brassica Campestris L. Both of them reduced their growth significantly, especially Brassica Campestris L. in 0.015 mg/L lead treatment. Each grow index of Lactuca sativa L. and Brassica Campestris L. changed most in all kinds of lead concentration, and the growth was inhibited most in 0.045 mg/L lead. The growth of Brassica Campestris L.was decreased more under higher concentrations of lead compared with Lactuca sativa L..
机译：为了了解铅对莴L.和菜心L. SSP的生长的影响，幼苗生长指数的变化引线应力（不同浓度的硝酸铅溶液），下和通过幼苗无土栽培研究在盆和温室。结果表明，两种植物生长受到不同水平的铅胁迫的影响，幼苗的生长速度降低但增加了大量的生长指数，除了茎和叶的新鲜重量和干重。叶数，叶面积，植物高度和新鲜的重量，干重和叶片中的干重明显下降，并且在较高水平的铅治疗中，在较高水平的铅治疗中均有明显下降。甘蓝型Campestris L.SSP的每种生长指数在较高浓度的铅治疗中降低。 Lactuca Sativa L.的生长稍微变得更好，芸苔Campestris L.在0.005 mg / L铅处理下略低于控制。因此，Lactuca sativa L.比芸苔属Campestris L更敏感。它们中的两者都显着降低了它们的生长，尤其是芸薹属Campestris L.在0.015 mg / L铅处理中。每种铅浓度的乳酸苜蓿和芸苔属Camestris L.和芸苔Camperis L.的每次生长指数都变化，并且抑制了0.045 mg / L铅的生长。与Lactuca Sativa L相比，芸苔Campestris L.Was的生长减少了更高浓度的铅。

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