Abstract
An in vitro protocol for Callerya speciosa (Champ.) Schot regeneration through embryogenesis was developed using the anthers as the explants. The late uninucleate stage of the microspore was optimal for the anther culture of C. speciosa. Embryonic callus was induced on a MS basal medium supplemented with 4.4 µM 6-benzylaminopurine (BA) and 9.04 µM 2,4-dichlorophenoxyacetic acid (2,4-D). Embryos were obtained on MS medium supplemented with 2.2 µM BA and 0.5 µM naphthaleneacetic acid (NAA). The highest percentage (16.7%) of embryos was achieved using the culture medium MS + 0.25 µM NAA + 1.1 µM BA. The highest percentage of embryos that developed into plants was 18.3%. However, haploid plants were not observed, which may have been due to the collection of the calli from the anther wall. The results presented here demonstrate the establishment of a highly efficient and rapid system for regenerating C. speciosa using anther cultures.
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