Lonicera edulis is a perennial berry shrub that prefers the cold and wet climate,with high nutritional and medicinal value. In this study,ecological coupling capability of L. edulis with light,heat,water and soil resources in cold regions was investigated to analyze comprehensively ecological effects of quantitative characters and genetic effects of parents,aiming at providing a theoretical basis for the breeding,introduction and domestication of fine varieties of L. edulis in cold regions of China. The results showed that fruit characters in L. edulis exhibited certain variations among different habitat types. To be specific,fruit vertical diameter varied slightly,fruit horizontal diameter varied greatly and seed number varied maximally,with the average variance coefficients of 9. 38%,11. 92% and20. 64%,respectively; in addition,fruit characters in L. edulis exhibited moderate heritability,moderate genetic gain and low level of genetic differentiation; the heritability of fruit vertical diameter,fruit horizontal diameter and seed number was 0. 825,0. 559 and 0. 627,respectively; the genetic gain of these three fruit characters was 7. 53%,5. 72% and 11. 94%,respectively,resulting in significant economical benefits.
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