Temperature Influences Flowering of Pakalana (Telosma cordata Merrill) under Long Days

in HortScience

The flowers of pakalana are initiated under long days (LD) at 18C or above. At 21 and 24C, inflorescence initiation occurs after 3 weeks of LD, and the clusters grow to 6 mm in another 2 weeks, but at 18C, about 12 weeks are required to achieve the 6-mm length. This length is critical, as a shorter stage often fails to develop further. From a length of 6 mm, clusters develop to anthesis in 3 to 4 weeks at 24C, 4 to 5 weeks at 21C, and 6 to 7 weeks at 18C. This work is important to the production of pakalana flowers for Hawaii's winter lei flower trade.

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