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《Acta Agrestia Sinica》 2017-04
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Effect of Different Treatment Methods on Seed Dormancy and Seedling Characteristics of Seven Kinds of Leguminous Plants

CHEN Yi-shi;Narkes·Wali;WANG Shu-lin;JING Peng-cheng;LU Wei-hua;College of Animal Science and Technology,Shihezi University;  
In order to study the effect of different methods on seed dormancy breaking,explore the reasons of seed dormancy and seek the best method of breaking seed dormancy,seven kinds of leguminous forages YeYe pea(Vicia tenuifolia),Sophora alopecuroides(Sophora alopecuroides),sainfoin(Onobrychis viciaefolia Scop),Rome alfalfa(Medicago falcata VAT.Romanina),Junggar rock astragalus membranaceus(Hedysarum songaricum),mountain rock astragalus membranaceus(Hedysarum shandi)and floret sainfoin(Onobrychis micrantha)seeds were used as materials,and machinery,hot water and sulfuric acid were used to break the seed dormancy,and the germination of the seedlings were counted after 15 days cultivation.The results showed that the seed dormancy of the 7 kinds of legumes all belonged to physical dormancy.Mechanical damage of skin or 5 min 80℃ hot water processing could effectively break the seed dormancy,and significantly improve the germination rate(P 0.05),and the plant height and root length of the seedling growth for 15 ds had no significant differences compared with the blank treatment.Effect of sulfuric acid treatments varies in different species and treatment time,and the seed germination rate was increased firstly and then reduced with the extension of processing time.Overall,treatment with 98%sulfuric acid for 5 min showed the best result,the seed germination rate was significantly increased(P 0.05).However,seedling growth had no significant differences compared with blank treatment.The results could provide a method of seed dormancy breaking for cultivation of artificial grassland and recovery of the degradation of vegetation in desert area.
【Fund】: 国家自然科学基金(31360568、31560659)资助
【CateGory Index】: S54
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