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has been cited by the following article:

• TITLE: Identification Cold Tolerance of Pineapple Germplasms at Seedling Stage

  AUTHORS: Haiyan Shu, Keming Li, Yanfei Ou, Rulin Zhan, Shenghe Chang

  KEYWORDS: Pineapple, Cold Tolerance, Seedling Stage, Simple Sequence Repeat (SSR), Breeding

  JOURNAL NAME: American Journal of Plant Sciences, Vol.12 No.12, December 8, 2021

  ABSTRACT: Pineapple plant was always injured due to low temperature. Breeding varieties with high cold tolerance was the supreme way to resolve this problem and identifying cold tolerance of germplasms collected was necessary. In this study, SSR locus around homologous sequences of cold-tolerant genes was searched and screened using MD-2 (cold-tolerant variety) and Tainong 17 (cold-sensitive variety). Seventy three pairs of primers of which PCR results were different between these two varieties were gotten. PCRs were performed using these as primers and genomic DNA of germplasms collected as templates. Six pairs of primers were found that their PCR results were in good consistent with cold tolerance. Using GLM (General linear model) association mapping analysis, two SSR markers linked to cold tolerance were found. Their efficiency was verified further using pineapple germplasms with high cold tolerance which had been validated in field by cold wave. They will be used in cold-tolerant breeding of pineapple in the future.