YAN Fang,WANG Qinli,MAO Zhuhong,et al.Effect on Germination Characteristics With Different Treatments for Seeds of Daphne giraldii[J].Northern Horticulture,2015,39(17):136-140.[doi:10.11937/bfyy.201517036]
不同处理对祖师麻基源植物黄瑞香种子萌发特性的影响
- Title:
- Effect on Germination Characteristics With Different Treatments for Seeds of Daphne giraldii
- Keywords:
- Daphne giraldii Nitsche.; testa; absorption rate; germination rate
- 文献标志码:
- A
- 摘要:
- 以黄瑞香种子为试材，通过对黄瑞香种子形态和萌发特性的研究，寻找打破种子休眠、提高种子萌发率的适宜条件。观察种子外部形态，对黄瑞香种子千粒质量、饱满度、含水量、生活力和吸水率等多项指标进行测定，对黄瑞香种子分别进行化学物质处理、低温层积和热水处理，分析不同层积时间、不同质量浓度化学物质、不同萌发介质处理对种子萌发率的影响。结果表明：黄瑞香种子含水量为7.12%，带外种皮的种子吸水率为33.4%，去除外种皮的种子吸水率为60.3%；化学物质处理和热水处理不能完全打破黄瑞香种子休眠；化学物质结合低温层积处理70 d种子萌发率为64.93%；平纸床和皱纸床介质上的发芽率分别为65.8%和53.2%。种皮不是限制种子萌发的主要因素，用200 mg/L GA3和25 mg/L 6-BA混合溶液浸种10 h后结合70 d低温层积处理可显著提高种子萌发率，种子萌发最佳发芽介质为平纸床。
- Abstract:
- Taking Daphne giraldii seeds as test material，to break the dormancy and improve the germination rate of Daphne giraldii seeds，the shapes and germination characteristics of Daphne giraldii seeds were studied.Several physiological indexes like the weight per thousand seeds，plumpness，content of moisture，seed viability，and the rate of water absorption were measured.The germination rate of Daphne giraldii seeds was determined under different treatments of chemical matter，stratification，soaking in hot water，and different matrixes.The results showed that the content of moisture of Daphne giraldii seeds was 7.12%，the rate of water absorption with testa was 33.4%,without testa was 60.3%.Chemical matter treatment and soaking in hot water could not break seeds dormancy completely.The germination rate were 61.93% under chemical matter treatment combined with stratification treatment.The germination rate on flat paper and crepe paper was 65.8% and 53.2%，respectively.Testa was not the main limiting factor of the germination of Daphne giraldii seeds.With the seeds soaked in 200 mg/L GA3 and 25 mg/L 6-BA solutions for 10 hours combined with stratification treatment at -5℃ for 70 days can improve the germination rate of the seeds obviously，the most appropriate matrix was flate paper.
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备注/Memo
第一作者简介：闫芳(1980-)，女，陕西宝鸡人，硕士，副教授，现主要从事药用植物栽培等研究工作。E-mail：lgod_forever@163.com.责任作者：王勤礼（1966-），男，甘肃永昌人，硕士，教授，现主要从事蔬菜育种及中草药栽培教学与科研工作。E-mail：wangqinli66@163.com.基金项目：甘肃省自然科学基金资助项目(1308RJZG156)；河西学院2013年度河西学院科研创新与应用校长基金资助项目。