Abstract
The flower of the jamblang plant (Syzygium cumini (L.) Skeels) is a type of compound flower. The jamblang flowers have a panicle like shape with branches that are far apart. The phenology study has practical importance for planning the plant breeding program, including if there will be the development of superior jamblang varieties. The purpose of this study was to determine the development and biological characteristics of jamblang flowers. The observation was conducted on the duration of the flower initiation phase, the small bud phase, the large bud phase, and the complete blooming phase (anthesis), and also flower biological characteristics. This research was carried out in Padang City from February to May 2022 using a survey method with purposive sampling. There are three of plant genotypes that were used as object in this study. The development of jamblang flowers in each phase has a different time for each flower genotype. The characteristics of flowers have similarities in each of their genotypes. Jamblang plant is classified as plants that have a complete flower structure and a perfect flower because it has two penitals on one flower.
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