摘要
水生蔬菜作物是长江流域农耕文明驯化作物中的独特类群,其野生近缘种是育种和品种改良的宝贵遗传资源。本研究从中国植物+物种信息系统和中国数字植物标本馆获取了10种水生蔬菜作物的36个野生近缘种的地理分布数据并进行了校对,结合相应的气候因子数据,使用最大熵模型(maximum entropy model,MaxEnt)构建生态位模型,并对物种未来分布变化进行预测。结果表明:水生蔬菜作物野生近缘种多样性热点区域主要位于长江中下游的洞庭湖和鄱阳湖流域,与长江流域农耕文明起源地相重合,表明农耕文明对植物资源的就近利用。在未来升温的气候情景下,水生蔬菜作物野生近缘种适宜分布热点区域可能会进一步扩张,多样性热点区域中心向高纬度地区迁移,这有利于水生蔬菜作物野生近缘种多样性的维持和提升,并为其保护提供了理论依据。
Aquatic vegetable crops are a unique group of domesticated crops from the farming civilization of the Yangtze River Basin,and their wild relatives are valuable genetic resources for breeding and variety improvement.This study utilized online database information from the iPlant and the Chinese Virtual Herbarium to obtain the geographical distribution data of 36 wild relatives of 10 aquatic vegetable crops.We used the maximum entropy model(MaxEnt)to construct an ecological niche model in conjunction with climatic factor data to predict future changes in species distributions.The results revealed that diversity hotspots for these wild relatives are concentrated in the Dongting Lake and Poyang Lake basins,aligning with the origin of the Yangtze River Basin farming civilization,indicating a historical proximity between the civilization and its plant resources.Under the climate scenario of future warming,the suitable distribution hotspots of wild relatives of aquatic vegetable crops may expand further,and the centers of diversity hotspots may migrate to high latitudes.This scenario could favor the maintenance and enhancement of wild relatives’diversity,providing a theoretical basis for their conservation.
作者
张立冬
邢凯峰
朱仔伟
张剑
戎俊
赵耀
ZHANG Lidong;XING Kaifeng;ZHU Ziwei;ZHANG Jian;RONG Jun;ZHAO Yao(School of Life Sciences,Nanchang University,Nanchang 330031,Jiangxi,China;Key Laboratory of Poyang Lake Environment and Resource Utilization(Nanchang University),Nanchang 330031,Jiangxi,China;Jiangxi Poyang Lake Wetland Conservation and Restoration National Permanent Scientific Research Base/National Ecosystem Research Station of Jiangxi Poyang Lake Wetland,Nanchang 330031,Jiangxi,China;Jiangxi Academy of Forestry,Nanchang 330013,Jiangxi,China)
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2024年第2期258-269,共12页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家自然科学基金项目(32260091)
江西省自然科学基金项目(20212BAB205029)
江西省研究生创新专项(YC2023-S001)。
