Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (6): 108-114. doi: 10.7668/hbnxb.20193007

Special Issue: Potato crops

• Crop Genetics & Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Cytological Observation and SSR Analysis of New Colored Potato Strains

YUE Dong, YU Zhuo, YU Xiaoxia , LI Jiaqi, LI Jingwei, YANG Dongsheng, ZHANG Hailong, LI Zhicong   

  1. College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China
  • Received:2022-06-04 Published:2022-12-28

Abstract:

In order to clarify the genetic differences of the six new-colored potato strains NNCS-1,NNCS-5,NNCS-6,NNCS-7,NNCS-33 and NNCS-37 at the cytogenetic and DNA molecular level,this experiment used material MIN-021 as control,and the regular staining and slides preparing and SSR marker technology were used to analyze the pollen fertility,chromosome configuration at meiosis metaphase Ⅰ of pollen mother cells and SSR polymorphism of the above six varieties.The results shaved that the pollen fertility of the six new-colored potato strains were 44.00%,66.78%,74.44%,60.70%,78.10% and 80.22%,respectively.And the chromosome pairing configurations of these test materials were 8.45Ⅰ+6.09Ⅱ+7.35Ⅲ+1.33Ⅳ,6.91Ⅰ+7.13Ⅱ+5.73Ⅲ+2.41Ⅳ,5.19Ⅰ+9.16Ⅱ+4.51Ⅲ+2.74Ⅳ,6.55Ⅰ+8.35Ⅱ+4.97Ⅲ+2.46Ⅳ,4.02Ⅰ+10.15Ⅱ+3.40Ⅲ+3.37Ⅳ and 3.31Ⅰ+10.42Ⅱ+2.99Ⅲ+3.72Ⅳ,respectively,indicating that there were certain differences among the strains at the cytological level.Ten suitable SSR primers were selected to amplify the genomic DNA of each new strain and control material,and 151 SSR polymorphic sites were obtained,accounting for 86.78% of the total number of polymorphic loci.The genetic differences among the materials were revealed.In addition,a SSR fingerprint was amplified with the selected specific primers C42,which could identify six new-colored potato strains and control.Based on the average genetic distance(GD=0.62),the seven materials were divided into three categories: the new strain NNCS-37,NNCS-6,NNCS-7,NNCS-5 and the control(MIN-021)belong to one categorie.The new strains NNCS-33 and NNCS-1 were separately classified as a categorie.

Key words: New colored potato strain, Cytogenetics, SSR analysis

Cite this article

YUE Dong, YU Zhuo, YU Xiaoxia, LI Jiaqi, LI Jingwei, YANG Dongsheng, ZHANG Hailong, LI Zhicong. Cytological Observation and SSR Analysis of New Colored Potato Strains[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(6): 108-114. doi: 10.7668/hbnxb.20193007.

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