A PRELIMINARY STUDY OF FLORAL DEVELOPMENT AND BREEDING SYSTEM OF Orthosiphon aristatus (BLUME) MIQ
DOI:
https://doi.org/10.51200/bsj.v39i2.4423Keywords:
Orthosiphon aristatus, floral biology, artificial pollinationAbstract
Orthosiphon aristatus (Blume) Miq. belongs to the family Lamiaceae. There are two varieties, white corolla (OAV-1) and purple corolla (OAV-2) varieties. An observation on inflorescence and flower development of O. aristatus was conducted alongside with the study on its breeding system. Inflorescence of OAV-1 and OAV-2 varieties started to develop approximately two and a half months after transplanting the rooted cuttings. The initiation of inflorescence until the senescence took about 75 days. Flower buds started to appear on the inflorescence approximately after 17 days of the commencement of inflorescence development. The development from flower bud until flower senescence took around 50 days. The artificial pollination tests, however, suggested that O. aristatus is predominantly a self-pollinated species.
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