Survey,Collection and Diversity Analysis of Crop Germplasm Resources in Fujian Province,China
During the Third National Crop Germplasm Resource Survey and Collection Action in Fujian province from 2017 to 2022,total 6235 accessions of crop germplasm resources including local crop varieties and their wild relatives were collected.The numbers of vegetables,food grains,fruit trees,economic crops,and forage and green manure crops collected in this action accounted for 33.57％,25.91％,24.35％,14.59％,and 1.57％respectively,and they belong to 83 families,229 genera,and 313 species.Among these gerplasm resources,16.04％belong to the Leguminosae faminly with the highest persentage.Different regions and altitudes were relevant to the species types and quantities of crop germplasm resources collected.Among the 9 prefecture level cities in the province,Sanming city had the highest number of germplasm resources,accounting for 20.65％.The number of crop germplasm resources decreased along with the increase of altitude.The number of collections at different altitude was correlated with the number of counties(cities,districts),townships(towns),and villages(streets).The Shannon-Wiener diversity index and Brillouin richness index were the highest at an altitude of 0-200 meters in the six prefecture level cities(Zhangzhou,Fuzhou,Ningde,Quanzhou,Putian,Xiamen)in coastal areas,while these two indexes are relatively high at the altitudes of 200-400 meters,400-600 meters,and 600-800 meters in three mountainous areas,such as Longyan,Sanming,and Nanping,respectively.Through the correlation analyses of species diversity index in different prefecture level cities and altitude intervals,a highly significant positive correlation was detected between the Shannon-Wiener diversity index and Sanming and Longyan cities,while a highly significant negative correlation was detected between the Pielou evenness index and Putian and Longyan cities,which might be closely correlated to the agricultural economic zones in the province.Thus,by investigating the diversity of crop germplasm resources in Fujian province,this study provided reference and scientific basis for the development,utilization,and excavation of local crop germplasm resources to meet local demands.
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