Evidence for spontaneous diploid androgenesis in Brassica napus L.
Tóm tắt
Seeds of androgenetic origin were obtained among the F1 progenies of two crosses between resynthesized and cultivated forms of Brassica napus. The high-erucic, white-flowered, resynthesized line No7076 acted as the female, and the zero-erucic, yellow-flowered, cultivars ‘Topas’ and ‘Puma’, as males. No androgenetic seeds were obtained in the reciprocal crosses. Resynthesized rape could thus be of potential use for the production of androgenetic plants. Of special interest is the high frequency (21%) of spontaneous androgenesis observed in one of the two crosses. One plant, determined from erucic acid content and flower colour analysis as androgenetic, had a diploid chromosome number. Further knowledge about the genetic control of spontaneous androgenesis in the present material and the origin of the cytoplasm in androgenetic plants are required in order to exploit this phenomenon in practical plant breeding.
Tài liệu tham khảo
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