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。
Propagating material is the basis for further research and development of a plant resource.Passiflora suberosa L.seeds stored at room temperature for 1 month,2 months,4 months and 5 months after harvesting 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 results showed that under room temperature,seeds stored for 1 month,2 months,4 months,and 5 months began to germinate on the 11th,12.3th,13th,and 14.7th day after sowing,respectively,with germination vigor 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 diameter 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 continuously,and seedling growth index also decreased.
作者
冯红玉
徐丽
陈媚
高玲
FENG Hongyu;XU Li;CHEN Mei;GAO Ling(Tropical Crops Genetic Resources Institute,CATAS/Danzhou Sub-Center for DUS Testing of New Varieties of Plants,Ministry of Agriculture and Rural Affairs,Danzhou,Hainan,571737,China)
出处
《中国南方果树》
北大核心
2024年第1期50-55,共6页
South China Fruits
基金
百香果高产优质兼具有耐高温优势的新品种育繁研究与示范应用[2022(020020203)]
西番莲(百香果)种质资源保护与创新利用(020020105003002)项目资助。
关键词
细柱西番莲
种子萌发
发芽率
子叶纵横径
生物量
Passiflora suberosa
seed germination
germination rate
vertical and transverse diameter of cotyledon
biomass
