Differences of active substances in different fruit phenotypes of Lycium ruthenicum Murr.
[Objective]The aim was to understand the phenotypic variation of Lycium ruthenicum Murr.fruits and the correlation between phenotype and active substances,to provide reference for its resource development and utilization.[Methods]Taking L.ruthenicum as materials,23 phenotypic characteristics were extracted,and the active substances were determined and analyzed.[Results](1)The coefficient of variation of roundness,correlation value and entropy of phenotypic characteristics was small,the differ-ence between individuals was small,and the stability was high.The coefficient of variation of area,yellow-blue channel value,red-green channel value,contrast and angular second moment value was large.(2)The coefficient of variation of active substance content was large,the stability was poor,and the selec-tion potential was large.The correlation coefficients between phenotypic characteristics and active sub-stances were extremely significant in 143 pairs(P<0.01)and significant in 20 pairs(P<0.05).(3)Prin-cipal component analysis showed that the characteristic vector values of red,green,blue,brightness,lightness,gray,perimeter,area,length,width,angular distance,and energy value were higher,which could be used as important reference factors for fruit quality evaluation.[Conclusion]The fruits of L.ru-thenicum have great potential for selection,and the content of active substances can be judged by pheno-typic characteristics.These results provide reference for fruit quality evaluation and non-destructive testing.