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Production of primary triticale from calluses of immature abnormal hybrid embryos between triticum durum and secale cereale



Production of primary triticale from calluses of immature abnormal hybrid embryos between triticum durum and secale cereale



Plant Breeding 105(2): 81-88



Plant regeneration was attempted in callus induced from the immature abnormal hybrid embryos between T. durum and S. cereale using 4-fluorophenoxyacetic acid as a growth regulator. In particular, the relationship of numerical variation in chromosomes between the callus tissues and the regenerated plants was investigated. Cytological observation revealed that there was no distinctive numerical difference between the shoot-forming (SF) and the non-shoot-forming calluses and also between the SF calluses and the regenerated plants. The root-tips of regenerated plants consisted of cells having various chromosome numbers, including the expected 2 n = 3 x = 21 (genomes, ABR) of which the frequency was 69.8%. The regenerated plants showed partial fertility, notwithstanding that the hybrid plants were expected to be sterile. Since the frequency of abnormal embryos was about 90% in this cross, the utilization of abnormal embryos was demonstrated by use of callus culture.

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Accession: 007691663

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DOI: 10.1111/j.1439-0523.1990.tb00458.x


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