| 温度、光照和GA3对黑种草(Nigella damascena L.)种子萌发的影响 |
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| 引用本文： | 朱艳芳,向先斌,熊莉军,胡晓芳,邓志军.温度、光照和GA3对黑种草(Nigella damascena L.)种子萌发的影响[J].种子,2017(2):12-15. |
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| 作者姓名： | 朱艳芳 向先斌 熊莉军 胡晓芳 邓志军 |
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| 作者单位： | 1. 湖北民族学院,林学园艺学院,种子生物学实验室,湖北恩施445000;2. 湖北省利川市毛坝乡特产服务中心,湖北利川,445422;3. 湖北省恩施土家族苗族自治州气象局,湖北恩施,445000 |
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| 基金项目： | 国家自然科学基金青年基金项目(81303169)，广西自然科学基金项目(2013 GXNSFBA 019169)，湖北省教育厅科学研究计划资助项目(Q20141902)，生物资源保护与利用湖北省重点实验室开放课题(PKLHB 1304)，湖北民族学院博士科研启动基金项目(MY 2013 B 014) |
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| 摘 要： | 研究了黑种草种子的吸水特性以及温度、光照和GA3对其萌发的影响.结果表明:新采收的黑种草种子吸水迅速,具有明显的迅速吸水期和吸水平台期,不存在吸水障碍;具有一定程度的浅生理休眠和热抑制现象,且为需光种子,在恒温条件下仅在10,15℃有少量萌发,其中交替光照下的萌发率显著高于黑暗处理;在15℃/25℃变温和交替光照条件下的萌发率较高,但也仅有(61.5士7.6)％;0.1 mmol/L的GA3溶液可有效解除其休眠,使黑种草种子在15℃交替光照条件下的萌发率从(33.5±2.2)％升高至(76.7±7.0)％.
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| 关 键 词： | 黑种草 种子休眠 萌发 需光种子 热抑制 |
Effects of Temperature,Light and Gibberellic Acid on Germination of Nigella damascena L.(Ranunculaceae) Seeds |
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| ZHU Yanfang,XIANG Xianbin,XIONG Lijun,HU Xiaofang,DENG Zhijun.Effects of Temperature,Light and Gibberellic Acid on Germination of Nigella damascena L.(Ranunculaceae) Seeds[J].Seed,2017(2):12-15. |
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| Authors: | ZHU Yanfang XIANG Xianbin XIONG Lijun HU Xiaofang DENG Zhijun |
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| Abstract: | Water absorption characteristics and effects of temperature,light and GA3 on germination in Nigella damascena seed were investigated.The results showed,that the fresh harvested seeds imbibed rapidly water,with remarkable phase Ⅰ and phase Ⅱ,without water absorption barrier,and that there was a non-deep physiological dormancy and the germination thermoinhibition phenomenon,and they were positively photoblastic seed,and they only germinated less at the constant temperature regimes of 10 ℃ and 15 ℃,and the germination percentage under alternating light regime was significantly higher than that under the dark regime,and that although the germination percentage under the variable temperature regime of 25 ℃/15 ℃ and alternating light conditions was higher,but only (61.5± 7.6) ％,and that GA3 solution of 0.1 mmol/L could effectively release the seed dormancy,so that the germination percentage under 15 ℃ and an alternating light regimes was advanced from (33.5±2.2)％ to (76.7±7.0) ％. |
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| Keywords: | Nigella damascena seed dormancy germination positively photoblastic seed thermoinhibition |
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