Pengaruh Pemberian Kolkisin terhadap Penampilan Fenotipe dua Varietas Tanaman Okra (Abelmochus esculentus L. Moench)

Abstract

Increasing productivity in cultivation of okra plants (Abelmochus esculentus L. Moench) can be done by mutation to produce populations that have diversity. This research was conducted to determine the effect of colchicine concentration on phenotypic changes in okra varieties (Abelmochus esculentus L. Moench) resulting in plants with polyploidy. This research was carried out on research fields at the Faculty of Agriculture, University of North Sumatra and at the Biology Laboratory, Faculty of Mathematics and Natural Sciences, University of North Sumatra from March to June 2023. This research used a Randomized Block Design (RAK) with 2 treatment factors. The first factor is the Zahira IPB Variety and the Naila IPB Variety. The second factor is administering colchicine doses of 0%, 0.20%, 0.40%, and 0.60%. The results showed that the Zahira IPB variety was significantly different from the Naila IPB variety regarding plant height at 5-13 WAP, number of leaves at 6-13 WAP, fruit length, fruit diameter, number of fruit per plant, and fruit weight per plant. Giving colchicine concentration had a significant effect on plant height at 2-13 WAP, number of leaves at 4-9 WAP, fruit length, fruit weight, and number of fruit. The interaction between varieties and the provision of colxin concentration had a significant effect on okra plant height at 11-13 WAP, and the number of leaves at 8 WAP.