| 遮荫对美国黑莓生长及光合特性的影响 |
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| 引用本文： | 杨俊霞,郭宝林,鲁韧强,张继冲.遮荫对美国黑莓生长及光合特性的影响[J].园艺学报,2005,32(2):292-294. |
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| 作者姓名： | 杨俊霞 郭宝林 鲁韧强 张继冲 |
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| 作者单位： | (河北农业大学林学院, 保定071000; 北京市农林科学院林业果树研究所, 北京100093) |
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| 基金项目： | 北京市基金委重点实验室资助项目 |
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| 摘 要： | 在全光照和透光率50%、25%、13% 4种条件下, 对美国黑莓‘赫尔’耐荫及光合特性进行研究, 结果表明: 全光处理的净光合速率日变化为双峰曲线, 高峰出现在9时和13时, 有“午休”现象;遮荫处理的净光合速率日变化为单峰曲线, 高峰在11时; 透光率50%时生长正常, 叶片厚度、栅栏组织、海绵组织、比叶鲜样质量、比叶干样质量、单果质量、果实可溶性固形物与全光照处理差异不显著, 叶绿素含量显著高于全光处理; 透光率在25%以下, 新梢徒长, 叶片发黄, 生长不良, 无花芽形成。表明美国黑莓具有一定的耐荫性, 适度遮荫利于美国黑莓生长发育。
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| 关 键 词： | 黑莓 遮荫 生长 光合特性 |
| 文章编号： | 0513-353X(2005)02-0292-03 |
| 收稿时间： | 2004-5-10 |
| 修稿时间： | 2004-12-23 |
The Effect of Shading on the Growth and Photosynthesis Characteristics in American Blackberry |
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| Yang Junxia,Guo Baolin,Lu Renqiang,Zhang Jichong.The Effect of Shading on the Growth and Photosynthesis Characteristics in American Blackberry[J].Acta Horticulturae Sinica,2005,32(2):292-294. |
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| Authors: | Yang Junxia Guo Baolin Lu Renqiang Zhang Jichong |
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| Institution: | (Forestry College of Hebei Agricultural University , Baoding 071000, China; Beijing Research Institute of Pomology and Forestry, Beijing 100093, China) |
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| Abstract: | The shade-endurance and photosynthesis characterstics of American blackberry‘Hull’were studied under light transmittance of 100% , 50% , 25% and 13%. The result showed that the net photosynthetic rate ( Pn) had two peaks at 9: 00 and 13: 00 respectively in a day, under full light with ‘Wuxiu’phenomenon. There was only one Pn peak appeared at 11: 00 after shading. No significant differences were found between full light and 50% light treatment in branch and leaf growth, leaf thickness, palisade and sponge tissue, fresh-leaf mass per dm2 , dry-leaf mass per dm2, per fruit mass and soluble solid content. Chlorophyll content was significantly higher in 50% light than that in full light. When light transmittance below 25% , the branches grew excessively and the leaves became yellow, and no flower buds formed. Itwas indicated that American blackberry has good shade-endurance, moderate shading is helpful to its growth and development. |
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| Keywords: | Blackberry Shading Growth Photosynthetic characteristics |
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