黄山栾树种子休眠特性研究

摘要黄山栾树(Koelreuteria integrifolia)，为无患子科栾树属，落叶乔木，喜光、略耐阴，深根性，适合生长于温暖湿润的气候，对土壤的要求不严，在酸性山地土壤和石灰质土壤均可以生长。黄山栾是具有较高经济价值的多用途树种，是我国城市绿化十大落叶树种之一，也是良好的水土保持林树种。但是黄山栾种皮坚硬，不经过处理，一般较难发芽或发芽率较低，推测原因是种子的休眠特性或可能存在发芽抑制物质。目前国内外关于黄山栾种子休眠这方面的研究较少，希望通过这次实验和数据分析，得到关于黄山栾树种子休眠特性的一些新发现和新结论，填补国内外研究在此方面的空白。本次试验采用催芽法、白菜籽生物测定法以及方差分析法来分析黄山栾树种子的胚、种皮、子叶中是否存在发芽抑制物质。通过实验和数据分析，最终推断黄山栾种子中的子叶内可能存在发芽抑制物质，通过人为措施如赤霉素浸种、层积处理等来打破休眠，可提早发芽和提高发芽率。72934

该论文有图2幅，表3个，参考文献14篇。

毕业论文关键词：黄山栾种子休眠发芽抑制物质生物测定法方差分析法

Study on characteristics of seed dormancy for Huangshan Luan

Abstract Huangshan (Koelreuteria integrifolia),Sapindaceae Koelreuteria,deciduous trees。like light, a little shade, deep root sex, born in warm and humid climate, for the strict requirements of the soil, acidic upland yellow soil and calcareous soil could grow。 Huangshan Luan is a multipurpose tree with high economic value, is one of the ten large deciduous plants in the urban greening in China, is also a good soil and water conservation forest tree species。 However, Huang Shan Luan testa hard, not after treatment, general difficult to germination or low germination percentage, presumably because seed dormancy or there would be a germination inhibitory substance。 At present at home and abroad on the Huangshan Koelreuteria seed dormancy of this study less, I hope through this experiment and data analysis, on Huangshan Koelreuteria paniculata seed dormancy characteristics of some newly discovered and new conclusions, to fill gaps in the domestic and foreign research on this。 Germination method, Chinese cabbage seed biological determination method and variance analysis method to analyze the Huangshan Koelreuteria paniculata seed embryo and testa and cotyledon in the presence of germination inhibitors by the test。 Through experiment and data analysis, and ultimately to infer Huangshan Koelreuteria seed cotyledons may be the presence of germination inhibitors, through artificial measures such as gibberellin soaking, stratification and break dormancy, early germination and increase the germination rate。

Key Words:Huangshan Luan seed dormancy Germination inhibitor bioassary method Variance analysis method

摘要Ⅰ

Abstract-Ⅱ

目录Ⅲ

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1 绪论- 1

2 材料与方法 2

2。1 供试材料- 2

2。2 实验器材- 2

2。3 研究方法- 2

3 结果与分析- -3

3。1 赤霉素和蒸馏水对黄山栾种子发芽率的影响 3

3。2 不同浓度甲醇溶液和各部位甲醇浸提液对白菜籽发芽率影响的对比 5

3。3 12。5%甲醇溶液与蒸馏水对白菜籽影响的对比 5

3。4 12。5%甲醇溶液与12。5%不同部位甲醇浸提液对白菜籽影响的对- 6

4 讨论6

参考文献- 8

致谢- 8

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图3-1 黄山栾树种子休眠特性研究:http://www.youerw.com/shengwu/lunwen_83058.html