Objective:To evaluate the plant resources of Blastus distributed in Guangdong Province,and to identify ornamental plant species with high development potential and utilization value.Meth-ods:An analytical hierarchy process model(AHP),constructed with 14 limiting factors,was used to quantify the development values of 8 different Blastus species in Guangdong Province,including their ornamental characteristics,resource development potential and biological features.Results:The 8 spe-cies of selected Blastus species in Guangdong Province could be classified into two grades based on their evaluation scores.Among them,Blastus dunnianus,Blastus apricus,Blastus cavleriei,Blastus ernae,and Blastus pauciflorus were classified as grade Ⅰ(score>3.5)because of their conspicuous advantages in ornamental characteristics,resource exploitation potential and biological characteristics,demonstrating strong ornamental and development value.In contrast,Blastus setulosus,Blastus cog-niauxii,and Blastus cochinchinensis were designated as grade Ⅱ(2.5～3.5),manifesting slightly low-er ornamental characteristics while suitable for appropriate development.Conclusion:The evaluation results revealed promising prospects for the development of Blastus in landscaping construction.The developmental and utilization potentials of Blastus in gardens were primary determined by factors such as the color of flowers and fruits,the duration of flowering and fruiting and ecological characteristics.
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