Effect of Defferent Shading on Growth of Tissue-cultured Hevea Brasiliensis Seedlings
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摘要: 通过人工遮荫方式研究5种遮荫强度（0%、50%、70%、80%和90%）对海南省橡胶树组培苗生长的影响。结果表明：90%遮荫条件下橡胶树组培苗的株高、茎粗、叶蓬距和叶片数均显著高于其他4个处理，且明显提高橡胶树组培苗的叶面积和叶绿素相对含量；90%遮荫的橡胶树组培苗出圃率最高（91.72%），显著高于其他处理。研究表明90%遮荫条件下能克服海南省夏天辐射过强、气温过高对橡胶树组培苗幼苗不良影响，有效提高植株生长、叶面积和叶绿素含量。Abstract: Artificially imposed 0% (CK), 50%, 70%, 80% or 90% shading condition was applied on seedlings of rubber tree (Hevea brasiliensis) to evaluate the effect on growth of the plants in Hainan Province. The results showed that, with 90% shading, the height, stem girth, leaf whorl distance, and leaf count of the seedlings were significantly higher than those of the plants grown under other treatments. As compared to CK, the total area and chlorophyll content of leaves increased as well with the largely shaded condition, but decreased at 50% or 70% level. In addition, 90% shading also rendered the significantly higher transplanting rate, at 91.72%. It appeared that 90% shading blocked much of the natural sunlight and lowered the surrounding temperature to significantly promote the growth and increase the leaf size and chlorophyll content of the tissue-cultured H. brasiliensis seedlings in Hainan Province.
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Key words:
- Hevea brasiliensis /
- tissue-cultured seedling /
- shading /
- growth
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表 1 不同遮光处理对橡胶树组培苗小筒苗1蓬叶接穗生长情况
Table 1. Effect of shading on growth of one-whorl scion of tissue-cultured H. Brasiliensis seedlings
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表 2 不同遮光处理对橡胶树组培苗小筒苗2蓬叶接穗生长情况
Table 2. Effect of shading on growth of two-whorl scion of tissue-cultured H. Brasiliensis seedlings
处理 株高
/cm茎粗
/mm叶蓬距
/cm叶片数量
/片处理1 29.85cC 3.32bC 2.46eD 2.70aA 处理2 33.47bB 3.85aAB 4.52cC 2.80aA 处理3 36.07aA 4.02aA 6.53bB 2.67aA 处理4 36.45aA 3.96aA 8.37aA 2.57aA 处理5(CK) 30.53cC 3.44bBC 4.20dC 2.63aA
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表 3 不同遮光处理对橡胶树组培苗小筒苗3蓬叶接穗生长情况
Table 3. Effect of shading on growth of three-whorl scion of tissue-cultured H. Brasiliensis seedlings
处理 株高
/cm茎粗
/mm叶蓬距
/cm叶片数量
/片处理1 43.53cC 4.38cBC 3.28cC 3.72bB 处理2 43.77cC 4.28cC 3.17cC 5.97aA 处理3 49.24bB 4.96aA 5.37bB 5.70aA 处理4 56.50aA 5.09aA 7.50aA 6.03aA 处理5(CK) 43.92cC 4.54bB 2.98cC 5.70aA
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表 4 不同遮光处理对橡胶树组培苗出圃时长势的影响
Table 4. Effect of shading on growth of tissue-cultured H. Brasiliensis seedling at time of transplanting
处理 叶片
SPAD值叶片数量
/片叶面积
/cm2出圃率
/%处理1 19.56 dD 9.08 bB 69.03dBC 60.84 cdCD 处理2 21.30 cC 11.37 aA 63.17dC 57.50 dD 处理3 26.56 bB 10.63 aA 104.56bA 64.17 cC 处理4 28.81 aA 10.70 aA 116.82aA 91.72 aA 处理5(CK) 26.98 bB 10.80 aA 83.01cB 78.36 bB
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[1] HUA Y W, HUANG T D, HUANG H S. Micro propagation of self-rooting juvenile clones by secondary somatic embryogenesis in Hevea brasiliensis[J]. Plant Breeding, 2010, 129:202-207. doi: 10.1111/pbr.2010.129.issue-2 [2] 陈雄庭.橡胶新型无性系简介[J].中国农村科技, 2006(6):59. http://nvsm.cnki.net/kns/brief/default_result.aspx [3] 杨加伟, 黄天带, 华玉伟, 等.巴西橡胶树组培苗耐低温分析[J].热带作物学报, 2012, 33(7):1235-1238. http://www.cnki.com.cn/Article/CJFDTOTAL-ZWSL201204004.htm [4] 徐玉梅, 张劲峰, 景跃波, 等.不同遮荫度对云南红豆杉苗木生长量影响试验研究[J].林业调查规划, 2010, 35(2):28-31. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=lydcgh201002008 [5] 林位夫, 王军, 曾宪海, 等. 一种小型橡胶苗培育装置: 中国CN201383969[P]. 2010-01-20. [6] 周珺, 姚行成, 林位夫, 等. 锥形育苗装置. 中国CN 203985237 U[P]. 2014-12-10. [7] 张忠伟. 基于RS与GIS的海南岛台风灾害对橡胶影响的风险性评价研究[D]. 海口: 海南师范大学, 2011: 9-35. [8] 闫小莉, 王德炉.遮荫对苦丁茶树叶片特征及光合特性的影响[J].生态学报, 2014, 34(13):3538-3547. http://www.ecologica.cn/stxb/ch/reader/view_abstract.aspx?file_no=stxb201306241761&flag=1 [9] 郑坚, 吴朝辉, 陈秋夏, 等.遮荫对降香黄檀幼苗生长和生理的影响[J].林业科学, 2016, 52(12):50-57. doi: 10.11707/j.1001-7488.20161206 [10] 梁文斌, 聂东伶, 吴思政, 等.遮荫对短梗大参苗木光合作用及生长的影响[J].生态学杂志, 2015, 34(2):413-419. http://med.wanfangdata.com.cn/Paper/Detail/PeriodicalPaper_stxzz201502017 -
