| 秤锤树种子休眠与萌发的初步研究＊ |
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| 引用本文： | 史晓华,黎念林,金玲,朱秋桂,徐本美.秤锤树种子休眠与萌发的初步研究＊[J].浙江农林大学学报,1999,16(3):228-233. |
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| 作者姓名： | 史晓华 黎念林 金玲 朱秋桂 徐本美 |
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| 作者单位： | 1.杭州植物园, 浙江 杭州 310013;2.中国科学院植物研究所 植物园, 北京 100093 |
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| 基金项目： | 浙江省杭州市园林文物局资助项目 |
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| 摘 要： | 对秤锤树种子基本性状作了测定, 并对种子进行酸蚀、药剂处理和低温层积等实验处理。结果表明, 种皮占种子风干质量的88 %～ 94 %, 透水性良好;种子经浓硫酸处理2 d , 再用500 mgL-1赤霉酸(GA3)处理后, 在室外低温层积一冬, 发芽率可达40.06 %, 对照种子则未萌发。秤锤树种子的休眠, 除了种皮机械束缚和透气性差的原因外, 种胚还需要一段低温的生理后熟过程, 属于综合休眠类型。图2 表3 参9
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| 关 键 词： | 秤锤树 种子 休眠 萌发 |
| 收稿时间： | 1998-09-07 |
Seed dormancy and germination of Sinojackia xylocarpa |
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| SHI Xiao-hua,LI Nian-lin,JIN Ling,ZHU Qiugui,XU Ben-mei.Seed dormancy and germination of Sinojackia xylocarpa[J].Journal of Zhejiang A&F University,1999,16(3):228-233. |
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| Authors: | SHI Xiao-hua LI Nian-lin JIN Ling ZHU Qiugui XU Ben-mei |
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| Affiliation: | 1.Hangzhou Botanical Garden , Hangzhou 310013 , Zhejiang , China;2.Beijing Botanical Garden, Institute of Botany , Chinese Academy of Sciences, Beijing 100093 , China |
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| Abstract: | Basic properties of Sinojackia xylocarpa seed were determined and experiments with acid erosion , chemical treatment and low temperature were carried out in order to search out dormancy and germination nature of the seed .The results showed that weight of the seed coat , which has a good water permeability , occupied 88 % to 94 % of the total seed .The germination rate could reach at 40.06 % after the seeds had been treated with sulphuric acid for two days , and with 500 mgL-1 GA3 , then stratified outdoor at low temperature for a winter , but the control seeds could not germinate .Seed dormancy of Sinojackia xylocarpa is due to not only the poor air permeability and the mechnical restraint of the seed coat but the process that its embryo needs a period of time for post ripening as well .So , it belongs to a type of comprehensive dormancy . |
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