| dc.description.abstract | Samosir local shallots are superior horticultural commodities whose fame
is starting to fade, as for the advantages of this original Samosir shallot is the taste
and aroma that is fragrant and the color is more shiny with little air content which
makes the size of the bulb small. It is important to overcome this problem so that
the preservation of Samosir local shallots is maintained with one alternative
method, namely chemical genetic mutation of colchicine.. This study aims to
identify the growth and production responses of several local shallot accessions of
Samosir in Humbang Hasundutan Regency to colchicine application. This research
was carried out in a cassa house of the Faculty of Agriculture, University of North
Sumatra at an altitude of ± 32 meters above sea level in August-December 2024,
using a factorial Randomized Group Design with 2 factors.. The first factor was
shallot accession (Siunong-unong Julu, Simamora 3, and Tipang 2). The second
factor was colchicine concentration treatment (0; 200; 400; and 600 ppm). The
results showed that Tipang 2 accession had 5 and 6 weeks plant length, harvest
age, tuber diameter per sample, crown wet weight per sample, root wet weight per
sample, root dry weight per sample, tuber wet weight per sample, tuber dry weight
per sample, quality I tuber grading, harvest index which was significantly higher
when compared to other accessions. Colchicine concentration of 200 ppm
increased plant length 2-5 weeks after planting, number of leaves 3 weeks after
planting, root dry weight per sample which was significantly higher than other
concentrations. The interaction between Tipang 2 accession and 600 ppm
colchicine concentration resulted in plant length 2-6 weeks after planting, number
of leaves 6 weeks after planting, root dry weight per sample which was significantly
higher than other treatment interactions. | en_US |
