Title: Dormancy and germination characteristics of Nirtaria sibirica seeds
Abstract: Objective To break the seed dormancy and improve the germination rate of the Nirtaria sibirica seeds.Methods N.sibirica seeds were treated with soaking in warm water,storing with moisture sand,and immersing seed in H2SO4(98%) and gibberellic acid(GA),then the germination rate,germination vigor,and germination peak period of the seeds were determined.Results The germination rate and germination vigor were 30% and 10% under soaking in warm water.The seeds began to germinate on the day 7 and reached the germination peak on the day 10.The germination rate and germination vigor were 55.5% and 26.5% under storing with moisture sand for 37 d.The seeds began to germinate on the day 2 and reached the germination peak on the day 10.The germination rate and germination vigor were 86.8% and 60.3% under storing with moisture sand for 95 d.The seeds began to germinate on the day 2 and reached the germination peak on the day 7.The germination rate and germination vigor were both 90.0% under being treated with 98% H2SO4for 2 h.The seeds began to germinate on the day 1 and reached the germination peak on the day 4.Seeds after being treated with 98% H2SO4for 2 h were sowed on the dark medium of MS + 0.5 g/mL BA + 0.5 g/mL GA,and the germination rate and germination vigor both reached to 98.1%.The seeds began to germinate on the day 1 and reached the germination peak on the day 4.Conclusion The dormancy of N.sibirica seeds is caused by hard seed vessels.The best way of breaking the seed dormancy is first treated with 98% H2SO4for 2 h and then cultured in the dark medium of MS + 0.5 g/mL BA + 0.5 g/mL GA,which could effectively break the dormancy of hard seeds and reach a high germination rate.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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