| 摘要: |
| 【目的】研究种子黏液对一串红种子基本性状和萌发的影响，为一串红种苗生产提供支持。【方法】以一串红‘奥运圣火’有黏液和无黏液种子为材料，研究了黏液对种子基本物理性状、吸水和失水特性、粘土能力、萌发特性和植株主要观赏性状的影响。【结果】吸水后，一串红有黏液种子的平均长度、宽度、厚度和质量均显著增大,而无黏液种子仅平均长度和宽度显著增大。黏液可以增强一串红种子的粘土能力，粘土后有黏液干种子的平均质量是无黏液干种子的9.3倍。与无黏液种子相比，黏液可以促进一串红种子吸收大量水分，减缓种子水分散失。黏液种子在吸水100 min时可以达到饱和状态，吸收的水分是自身质量的6.81倍，在室温条件下经过36 h脱水才能达到质量恒定；无黏液种子在吸水60 min时可达到饱和状态，吸收的水分是自身质量的0.59倍，经3 h脱水即可达到质量恒定。一串红有黏液种子发芽势、发芽率、发芽指数、活力指数、根长、苗长均显著高于无黏液种子，发芽持续时间显著短于无黏液种子。种子黏液对一串红主要观赏性状无显著影响。【结论】黏液对一串红种子萌发特性有明显影响，有利于一串红种子的萌发和成苗。 |
| 关键词: 一串红 种子黏液 种子萌发 种子活力 |
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| 基金项目:北京市公园管理中心项目“几种花卉种子丸粒化产品研发”（ZX2015021） |
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| Effects of seed mucilage on its basic characters and germination traits of Salvia splendens |
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ZHAO Zhengnan,LI Jinyu,LIU Qian,et al
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| Abstract: |
| 【Objective】This study investigated the effects of mucilage on seed basic characters and germination traits of Salvia splendens.【Method】The influences of mucilage on seed basic physical traits,water absorption,dehydration features,soil adhesion ability,germination traits,main ornamental characters of S.splendens variety “Olympic flame” were studies using seeds with and without mucilage.【Result】The average seed length,seed width,seed thickness and seed weight were significant increased after water absorption in mucilaginous seeds.The average seed length and seed width were significantly increased in non mucilaginous seeds.The mucilage improved the ability of soil adhesion.The average weight of mucilaginous seed was 9.3 times as much as the weight of non mucilaginous seed.The mucilage improved the ability of water absorption and slowed down dehydration.It took 100 min for mucilaginous seeds to reach water saturation station,and the weight was 6.81 times as much as its own weight.The dehydration lasted for 36 h.It took 60 min for non mucilaginous seeds to reach water saturation station,and the weight was 0.59 times as much as its own weight.The dehydration lasted for 3 h.The germination energy,germination rate,germination index,vigor index,root length and seedling length of mucilaginous seeds were significantly higher than those of non-mucilaginous seeds,and the germination time of mucilaginous seeds was significant shorter than that of non mucilaginous seeds.The mucilage had no effect on plant main ornamental characters.【Conclusion】The mucilage affected the seed germination significantly and it improved the abilities of seed germination and emergence of seedlings of S.splendens. |
| Key words: Salvia splendens seed mucilage seed germination seed vigor |
