The effect of giving colchicine on appearance phnotypes of two genotypes in okra (Abelmochus esculentus L. Moench)

Abstract

Cultivation of okra (Abelmochus esculentus L. Moench) is done to increase productivity by means of mutations to produce populations that have diversity. The aim of this study was to determine the effect of colchicine concentration on phenotypic changes in two genotypes of okra so as to produce plants with polyploidy properties. This research was conducted using a Randomized Block Design (RBD) with 2 treatment factors. First factor is use IPB’s Zahira Varieties: IPB’s Naila Varieties. Second factor was addition with a dose of colchicine 0%, 0.20%, 0.40%, and 0.60% as a solution for soaking okra seeds. Results showed that stomatal density (mm2) and flowering age WAP were significantly different due to variety and colchicine treatments. Variety significantly affected plant height at 5-13 WAP, number of leaves at 6-13 WAP, fruit length, fruit diameter, fruit weight, and number of fruit, colchicine concentration significantly affected height 2-13 WAP, number leaves at 4-9 WAP, flowering age, fruit length, fruit diameter, fruit weight, and number of fruit. Interaction of varieties and administration of colchicine concentrations affected okra plant height at 11-13 WAP, number of leaves at 8 WAP, and fruit weight. The qualitative characters show the results of changes in leaf color and shape.