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Genetic linkage between male sterility and non-spiny trait in safflower Carthamus tinctorius L



Genetic linkage between male sterility and non-spiny trait in safflower Carthamus tinctorius L



Plant Breeding 132(2): 180-184



Genetic male sterility (GMS) exists naturally in safflower (Carthamus tinctorius L.). In the existing safflower GMS lines, sterile and fertile plants are distinguishable at flowering. This causes delay in fertile plants rouging and reduction in hybrid purity. In this investigation, a cross between a spiny GMS parent 13-137 and a spiny non-GMS parent A1 was effected. One sib cross, SC-67, producing non-parental-type non-spiny sterile and spiny fertile plants in F3 was advanced to F9 through sib crossing between non-spiny sterile and spiny fertile plants. Mendelian digenic segregation was not observed for non-spiny trait and male sterility. The results revealed strong linkage between these traits. The linkage was confirmed in F2 generations of crosses between a non-spiny marker-linked GMS line (MGMS) and five elite lines. Male sterility linked non-spiny trait could distinguish sterile and fertile plants at elongation stage. The MGMS would be useful in production of pure F1 hybrid seed and development of elite populations.

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Accession: 036700907

Download citation: RISBibTeXText

DOI: 10.1111/pbr.12029



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