| 盐生植物种子异型性研究进展 |
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| 引用本文： | 邢佳佳,姚世响,兰海燕.盐生植物种子异型性研究进展[J].新疆农业科学,2012,49(4):771-777. |
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| 作者姓名： | 邢佳佳 姚世响 兰海燕 |
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| 作者单位： | 新疆大学生命科学与技术学院,乌鲁木齐,830046;清华大学生命科学学院,北京,100000 |
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| 基金项目： | 国家自然科学基金(30660012);新疆维吾尔自治区科技攻关重大专项(200731138-3);新疆生物资源基因工程重点实验室开放基金(XJDX0201-2005-03;XJDX0201-2007-03;XJDX0201-2008-03) |
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| 摘 要： | 种子异型性指植物在长期进化中,同一植株上产生多种在形态(颜色、质量)和结构(散布结构)及萌发、休眠特性等方面存在明显差异的种子.种子异型性现象在盐生植物中较为常见,多分为褐色和黑色种子,通常前者不休眠,萌发快,萌发率高,耐盐性强:后者休眠,萌发慢,萌发率低,耐盐性弱.盐生植物种子异型性是其对环境适应的重要特性,同时对种群的建立和繁衍有着重要的生态学意义.基于前人的研究对盐生植物异型性种子的形态结构及萌发、耐盐与休眠、产生机制及生态学意义等方面进行了综合论述,以期为相关研究提供参考.
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| 关 键 词： | 种子异型性 盐生植物 异质化 两面下注策略 褐色种子 黑色种子 |
| 收稿时间： | 2012-04-25 |
Advances in Halophytes Seed Heteromorphism Research |
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| XING Jia-Jia
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YAO Shi-xiang
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LAN Hai-yan.Advances in Halophytes Seed Heteromorphism Research[J].Xinjiang Agricultural Sciences,2012,49(4):771-777. |
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| Authors: | XING Jia-Jia YAO Shi-xiang LAN Hai-yan |
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| Institution: | 1.C ollege of Life Science and Technology,Xinjiang University,Urumqi 830046,Ch ina;2.College of Life Science,Tsinghua University,Beijing 100000,China) |
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| Abstract: | Seed heteromorphism can be defined as the production of different dist inct types of seeds by a single individual plant during evolution.Heteromorphic seeds often differ significantly in morphology(colour and mass),shape(disper sal structures),germination and dormancy characteristics.Many halophytes,whic h exhibit seed heteromorphism,usually produce brown and black seeds;brown morp h was non-dormant and could germinate in higher saline conditions than black mor ph.Seed heteromorphism is one of the major strategies for halophyte to survive in saline areas,and therefore contribute to its population establishment and su ccession.A review on seed heteromorphism in halophytes was performed to give so me suggestions for related-research,covering the following aspects: seed morpho logy,structure and germination behaviour;the ability to tolerate salt stress a nd dormancy characteristics;the mechanism of heteromorphic seeds production and its contribution to halophytes distribution in saline habitat. |
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| Keywords: | Seed heteromorphism halophyte heterogeneity bet-hedging strategy brown seed black seed |
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