首页|温度、光照和GA3对黑种草(Nigella damascena L.)种子萌发的影响

温度、光照和GA3对黑种草(Nigella damascena L.)种子萌发的影响

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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)％.
Effects of Temperature, Light and Gibberellic Acid on Germination of Nigella damascena L.(Ranunculaceae) Seeds
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) ％.

Nigella damascenaseed dormancygerminationpositively photoblastic seedthermoinhibition

朱艳芳、向先斌、熊莉军、胡晓芳、邓志军

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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

湖北省利川市毛坝乡特产服务中心,湖北利川445422

湖北省恩施土家族苗族自治州气象局, 湖北恩施445000

黑种草 种子休眠 萌发 需光种子 热抑制

国家自然科学基金青年基金广西自然科学基金湖北省教育厅科学研究计划资助项目生物资源保护与利用湖北省重点实验室开放课题湖北民族学院博士科研启动基金

813031692013 GXNSFBA 019169Q20141902PKLHB 1304MY 2013 B 014

2017

10.16590/j.cnki.1001-4705.2017.02.012

种子
贵州省种子管理站 贵州省种子学会 中国种子协会

种子

CSTPCD北大核心
影响因子：0.502
ISSN：1001-4705
年,卷(期)：2017.36(2)
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