| Summary: | Giant ginger (Zingiber officinale Rosc. var. officinale), red
ginger (Zingiber officinale Rosc. var. rubra) and small ginger
(Zingiber officinale Rosc. var. amarum) are three varieties of
Zingiber officinale Rosc. They have a lot of benefit and often used
by Indonesian as a traditional drug. Moreover, they have a big
chance to be use as a flavor in world wide. Therefore, research for
their quality, quantity and continuity of supplyare needed.
Characterization of their chromosomes is one effort for improving
ginger cultivation. The objective of this research was to study
mitotic time and chromosome characters of three varieties of
ginger. Squashing method was used for chromosome preparation.
The results showed that mitotic time of giant ginger is 09.00-10.05 am, red ginger is 09.00-10.30 am, while small ginger is
08.45-11.00 am. Chromosome number of giant ginger and small
ginger are 2n=2x=30, while red ginger is 2n=2x=22. Giant ginger
has R= 3,109, Red ginger has R = 3,206 and small ginger has R =
4,065. Based on chromosome characters it is revealed that
relationship between giant ginger and red ginger is closer that of
compare to small ginger. This result is important as basic
information for improving the gingers production through breeding
program.
Key words: Zingiber officinale Rosc., mitotic time, chromosome
characterization, squashmethod
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