The influence of ultraviolet-B light and carbon dioxide enrichment on the growth and physiology of seedlings of three conifer species
The influence of ultraviolet-B light and carbon dioxide enrichment on the growth and physiology of seedlings of three conifer species
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DOI：
10.1139/x94-001
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发表时间：
1994
影响因子：
2.2
通讯作者：
R. Yakimchuk;J. Hoddinott
中科院分区：
文献类型：
--
作者：
R. Yakimchuk;J. Hoddinott
人为产生的二氧化碳和消耗平流层臭氧的化学物质正在改变植物的生长环境。大量的研究考察了CO2和UV-B水平增加对植物生长和生理的影响，但很少有研究考察它们之间的相互作用。松（Pinusbanksiana Lamb.），黑云杉（Piceamariana (Mill.)）将白云杉（Piceaglauca (Moench) Voss）从种子放入生长室内，在有或没有补充UV-B照射的情况下，在350或700 μmol•mol−1的CO2中培养16周。进行经典和功能生长分析以确定治疗效果。高CO2水平增加了这三个物种的生物量产量，而UV-B光则降低了生物量产量。在UV-B光下，不耐阴的短叶松比不耐阴的云杉产生更多的UV-B吸收色素。总体而言，白云杉对两种处理因子最敏感。在这三种物种中，影响的相对程度可以…
Anthropogenic production of CO2 and stratospheric ozone depleting chemicals is altering the plant growth environment. Numerous studies have examined the influence of increasing CO2 and UV-B levels on plant growth and physiology, but few studies examine their interaction. Jack pine (Pinusbanksiana Lamb.), black spruce (Piceamariana (Mill.) B.S.R), and white spruce (Piceaglauca (Moench) Voss) were raised in growth rooms from seed for 16 weeks in air with either 350 or 700 μmol•mol−1 of CO2 in the presence or absence of supplemental UV-B irradiation. Classical and functional growth analyses were performed to identify treatment effects. Biomass production in all three species was increased by high CO2 levels while UV-B light reduced it. Shade-intolerant jack pine showed a greater production of UV-B absorbing pigments in UV-B light than did shade-tolerant spruce species. Overall, white spruce was the most sensitive species to both treatment factors. The relative magnitude of the effects in the three species ca...