摘要
繁殖材料是深入研究与开发某个植物资源的基础,为了解细柱西番莲种子萌发特性、活力变化以及幼苗的生长状况,以采收后分别常温贮藏1个月、2个月、4个月和5个月的细柱西番莲Passiflora suberosa种子为试材,测定比较种子发芽时间、发芽率、发芽势、子叶纵横径、第一片真叶纵横径以及幼苗生物量.结果表明,在常温条件下,贮藏1个月、2个月、4个月和5个月种子分别在播种后第11天、第12.3天、第13天和第14.7天开始萌发,发芽势分别为22.22％、17.17％、12.22％和 10.00％,发芽率分别为 96.97％、88.46％、54.44％和 21.11％;5 株幼苗生物量分别为0.24、0.17、0.16和0.14 g;萌发幼苗子叶纵径分别为1.33、1.26、1.18和1.13 cm,横径分别为0.87、0.83、0.78和0.75 cm;第一片真叶纵径分别为2.78、2.54、2.48和2.39 cm,横径分别为2.73、2.48、2.33和2.25 cm.说明贮藏1个月的细柱西番莲种子发芽最快,发芽势和发芽率最高,萌发幼苗子叶、第一片真叶大小、生物量等也最高.随着贮藏时间延长,其种子发芽率和发芽势均不断下降,幼苗生长指标也下降.
Abstract
Propagating material is the basis for further research and development of a plant resource.Passiflo-ra suberosa L.seeds stored at room temperature for 1 month,2 months,4 months and 5 months after harves-ting were used as test materials.The germination time,germination rate,germination potential,transverse and vertical diameter of cotyledon,transverse and vertical diameter of first true leaf and seedling biomass were measured and compared to determine the seeds germination and seedling characteristics of P.suberosa.The re-sults showed that under room temperature,seeds stored for 1 month,2 months,4 months,and 5 months be-gan to germinate on the 11th,12.3th,13th,and 14.7th day after sowing,respectively,with germination vig-or of 22.22％,17.17％,12.22％,and 10.00％,and germination rate of 96.97％,88.46％,54.44％,and 21.11％,respectively.Biomass of these 5 seedlings was 0.24 g,0.17 g,0.16 g,and 0.14 g,with vertical di-ameter of cotyledon at 1.33 cm,1.26 cm,1.18 cm,and 1.13 cm,the transverse diameter at 0.87 cm,0.83 cm,0.78 cm,and 0.75 cm,the vertical diameter of first leaf at 2.78,2.54 cm,2.48 cm,and 2.39 cm,and the transverse diameter at 2.73 cm,2.48 cm,2.33 cm,and 2.25 cm,respectively.The results indicated that the seeds stored for 1 month showed the fastest germination,the highest germination potential and germination rate.The size and biomass of cotyledon and first true leaf of germinated seedlings were also the greatest.With the extension of storage time,the germination rate and germination potential of the seeds decreased continu-ously,and seedling growth index also decreased.
基金项目
&&(2022020020203)
西番莲(百香果)种质资源保护与创新利用(020020105003002)
维普
万方数据