Vol. 12, Issue 11 (2023)

Author(s):
Kiran Choudhary, Dr. PS Shekhawat and Dr. RP Ghasolia

Abstract:
Cumin (Cuminum cyminum L.) is an herbaceous, dicotyledonous annual plant, diploid (2n = 2x = 14) and allogam with hermaphrodite flowers. Cumin is extensively used in cuisines around the world. It is believed to be a native of the Mediterranean and near Eastern regions. The cultural and physical parameters of all these isolates were studied on potato dextrose agar medium. The different isolates of F. oxysporum f. sp. cumini (FOC-1, FOC-2, FOC-3, FOC-4, FOC-5, FOC-6, FOC-7, FOC-8, FOC-9, FOC-10, FOC-11, FOC-12, FOC-13, FOC-14 and FOC-15) were examined for their distinguishable characteristics such as radial growth, colony colour, colony appearance, colony texture, colony shape. Among four solid media, PDA medium was found most suitable for the growth of pathogen followed by, oat meal agar, corn meal agar and rose bengal agar, while rose bengal agar was found less growth of pathogen. The average maximum growth rate of mycelium was found in FOC-6 whereas FOC-11 showed minimum growth. The eight isolates (FOC-2, FOC-4, FOC-6, FOC-7, FOC-8, FOC-12, FOC-14 and FOC-15) showed fast growth rate whereas the five isolates (FOC-1, FOC-5, FOC-9, FOC-10 and FOC-13) showed moderate growth rate and FOC-3 and FOC-11 showed slow growth rate. Four isolates FOC-7, FOC-10, FOC-11 and FOC-15 showed appressed growth whereas, fluffy growth was shown by FOC-1, FOC-4, FOC-6, FOC-8, FOC-9, FOC-12 and FOC-14 isolate and FOC-2, FOC-3, FOC-5 and FOC-13 showed partially fluffy growth. Shape of the colony of isolates was found in round.