期刊论文

中文

中南林业科技大学学报

1673-923X

2014

34

2

12-15

10.14067/j.cnki.1673-923x.2014.02.009

“十二五”国家科技支撑项目“楸树和赤皮青冈珍贵用材林定向培育技术研究与示范”（2011 BAD21B03）；

本校为第一机构

以浙江庆元、湖南永定和湖南靖县3个种源的赤皮青冈1年生实生幼苗为试验材料,研究了土壤水分胁迫对不同赤皮青冈种源生理特性的影响,结果表明:水分胁迫50 d后,随着水分胁迫程度的加强,各供试种源的叶绿素a(Chla)含量表现为先上升后下降的趋势;叶绿素b(Chlb)含量表现为下降的趋势;丙二醛(MDA)含量表现为增加的趋势;过氧化物酶(POD)活性变化规律种源之间有差异,浙江庆元种源和湖南永定种源POD活性呈现出先升高后降低的趋势,而湖南靖县种源呈现出下降的趋势。浙江庆元种源在土壤相对含水量为60%,且胁迫时间小于30 d时,各项生理指标均显著优于其他处理。推测各种源之间抗旱性存在较大差异,3个供试赤...

By taking one-year-old seedlings of Cyclobalanopsis gilva as the tested material,the effects of soil water stress on physiological characteristics in different C.gilva varieties have been studied.The results indicate that under water stress for 50 days,the chlorophyll A contents in all species increased at the initial stage then decreased slowly,while chlorophyll B contents showed a declining trend and MDA contents were increasing as the water stress continued;POD activities in Zhejiang and Yongding varieties firstly increased then dropped,but ...