CHROMOSOME CHARACTERIZATION OF CELEBES LOCAL CUCUMBER (CUCUMIS SP.)

Cucumber is one of the useful vegetable and it is often used for healthy, beauty and culinary.
In Celebes, especially in Gorontalo and Palu, some local cucumbers are widely consumed.
Study on chromosome characterization has never been done on Celebes local cucumber.
In fact, the research is very useful to complete the identity of this plant.
For this reason, chromosomes of Celebes local cucumbers were characterized.
Squash method was used for chromosome preparation.
The result showed that time of mitosis stages occurred at 08.30-10.30 am in Gorontalo cucumber and 08.30-11.00 am in Palu cucumbers with time of prometaphase stages of Gorontalo cucumber was at 08.55-09.00 am, Palu 1 cucumber was at 08.50-08.55 am and Palu 2 cucumber was at 09.00-09.05 am.
The similarity of cell cycle time is supposedly caused of these local cucumbers are in the same genus.
Gorontalo cucumber has similar diploid (2n) chromosome number = 24 with karyotype formula 2n=2x=24 m and is concluded as Timun Suri.
Palu cucumbers have similar diploid (2n) chromosome number = 14 with karyotype formula 2n=2x=14 m and are concluded as cucumbers (Cucumis sativus). The R value of Gorontalo, Palu 1, and Palu 2 local cucumbers respectively are 2.00, 2.21, and 2.45. The values show that these local cucumbers have a high genetic similarity.

IV International Symposium on Cucurbits

B.S. Daryono, D.A. Kumalawati, S. Abdullah

Gorontalo cucumber, Palu cucumber, karyotype, mitosis, prometaphase

https://doi.org/10.17660/ActaHortic.2010.871.20