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[Objective] This paper aimed to construct the core collection of cassava germplasm. [Methods]Parameter values of six traits of 161 clones were analyzed and evaluated. [Results] Minkowski genetic distance was established for cluster analysis of core collection. Preferred sampling method(D_2C_5S_3) was suitable for the construction of the core collection of cassava. A total of 25 core collections were obtained,which accounted for 15% of the original germplasm and could represent the genetic diversity and integrity of the original germplasms. Meanwhile,it reflected that the genetic background of the tested cassava germplasm was narrow and the range of genetic diversity was quite small with genetic redundancy. [Conclusions]Constructing core collection provided a theoretical foundation for the protection and utilization of cassava germplasms.
[Methods] Parameter values of six traits of 161 clones were analyzed and evaluated. [Results] Minkowski genetic distance was established for cluster analysis of core collection. Preferred sampling method ( A total of 25 core collections were obtained, which accounted for 15% of the original germplasm and could represent the genetic diversity and integrity of the original germplasms. Meanwhile, it reflected that the genetic background of the tested cassava germplasm was narrow and the range of genetic diversity was quite small with genetic redundancy. [Conclusions] Constructing core collection provided a theoretical foundation for the protection and utilization of cassava germplasms.