甘肃省蔷薇科草本植物种质资源调查与分析

Investigation and Analysis of Germplasm Resources of Rosaceae Herbaceous Plants in Gansu Province

蔷薇科(Rosaceae)植物具有经济、食用、药用、观赏等多种功效,也是世界园林较为著名的观赏植物之一。为了探明甘肃省蔷薇科草本植物种质资源概况,以甘肃省53个地级市县的蔷薇科草本植物资源为研究对象,通过实地勘察与资料收集的方法对其种质资源生活型、优势属、空间分布、生境分布及园林观赏价值进行分析。研究结果表明:(1)甘肃省蔷薇科草本植物共有11属45种,其中委陵菜属(Potentilla)为优势属,占调查植物资源总数的57.78%,其生活型大多数为多年生草本,为41种;(2)从空间分布来看,垂直分布变化较大,在海拔30~5000 m均有分布,蕨麻(Potentilla anserina)水平分布点最多,共计34个;(3)生境类型丰富多样,每种植物可以分布在不同的生境中,其中草地为集中分布生境,分布的种数最多达29种,占调查总数的64.40%;(4)园林观赏价值主要体现在花色、花期、果色及果期方面。

Rosaceae plants have economic value,edible value,medicinal value,ornamental value,and so on,and they are one of the most famous ornamental plants in the world garden.To explore the germplasm resources of Rosaceae herbaceous plants in Gansu Province,the germplasm resources of Rosaceae herbaceous plants in 53 regional cities and counties in Gansu Province were taken as the research object.Field investigation and data collection analyzed the life types,dominant genera,spatial distribution,habitat distribution,and ornamental value of the germplasm resources.The results showed as follows:(1)There were 45 species in 11 genera of Rosaceae herbaceous plants in Gansu Province,among which Potentilla was the dominant genus,accounting for 57.78%of the total plant resources investigated.Most of the life forms were perennial herbaceous plants(41 species).(2)From the perspective of spatial distribution,the vertical distribution changes significantly and is distributed 30~5000 m above sea level.Potentilla anserina has the most horizontal distribution points,with a total of 34 distribution points.(3)The habitat types were rich and varied,and each plant can be distributed in different habitats.Grassland was a concentrated distribution habitat.The maximum number of species distributed was 29,accounting for 64.40%of the total.(4)Garden ornamental value is mainly reflected in flower color,flowering,fruit color,and fruit period.