Biotechnology Bulletin ›› 2018, Vol. 34 ›› Issue (7): 119-125.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0238

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Development and Phenotypic Analysis of Tetraploid Arabidopsis thaliana with QUARTET Mutation

HE Shuo-kang, LUO Ze-wei   

  1. Institute of Biostatistics,School of Life Science,Fudan University,Shanghai 200433
  • Received:2018-03-20 Online:2018-07-26 Published:2018-08-01

Abstract: To apply tetrad analysis in the research on genetic recombination of polyploid,we treated the diploid Columbia(Col)from gene qrt1 mutation and Arabidopsis thaliana of Landsberg erecta(Ler)ecotype with colchicine for inducing the genome doubling. The flow cytometry and fluorescence in situ hybridization were employed to screen the successfully-doubled tetraploid Col and Ler from gene qrt1 mutation. Then their vegetable and reproductive phenotypes were analyzed. As results,firstly,qrt1 mutation reduced the number of lateral roots and side bolts and the area of rosette leaves. Secondly,the area of rosette leaves and the size of pollen,anther and seed of the tetraploid increased,and the number of lateral roots and side bolts decreased,and the time of bolting siliques delayed,And the number of fruit pods per plant and seeds per fruit pod were less,while the germination rate approached 100%. Thirdly,some phenotypes were influenced differently by ploidy in Col and Ler,for example,the effects of ploidy on the height of stem,the number of branches and length of siliques varied.

Key words: Arabidopsis thaliana, Quartet1, tetrad analysis, flow cytometry, fluorescence in situ hybridization, phenotypic analysis