Vol. 7, Issue 2 (2019)
Effect of seed mycoflora on seed health in respect to seed germination and seedling vigour in groundnut cultivars
Author(s): KD Vaghela, NM Gohel and KI Vasava
Abstract: Groundnut or peanut (Arachis hypogaea L.) is a crop of global importance, also known as “King of oilseedsâ€. It is widely grown in the tropical and subtropical regions of the world. Quality of seeds play a very important role for the production of healthy crop. A seed-borne pathogen present externally or internally or associated with the seed as contaminant may caused seed abortion, seed rot, seed necrosis, reduction or elimination of germination capacity as well as caused biochemical changes in infected seeds. Over all, six fungal species belonging to three genera viz., Aspergillus niger, Aspergillus flavus, Fusarium oxysporum, Rhizopus sp., Aspergillus fumigatus and Aspergillus terreus were detected as seed mycoflora in groundnut by agar plate and blotter paper method. Aspergillus flavus Link and Aspergillus niger van Tieghem were found dominant seed mycoflora in groundnut in all ten cultivars both in agar plate and blotter paper method. The six different isolates detected from groundnut seed samples were identified based on morphological characters. However, among these, two unknown isolates were sent to Indian Type Culture Collection, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi for identification and it was identified as Aspergillus fumigatus Fresenius (ITCC No. 10,442.17) and Aspergillus terreus Thom (ITCC No. 10,441.17). The seed germination, seedling length and seedling vigour index (SVI) was drastically reduced by all detected seed mycoflora in all tested groundnut cultivars. Aspergillus flavus and A. niger caused maximum reduction in germination per cent, seedling length and SVI in all ten cultivars. Aspergillus flavus showed highest Per cent Discolouration Intensity (PDI) in cultivars viz., GG 8 (77.75%), GG 2 (77.25%) and GG 11 (75%).
Fig. 1: Seed germination test by Paper towel method
Pages: 275-279 | 633 Views 98 Downloads
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How to cite this article:
KD Vaghela, NM Gohel, KI Vasava. Effect of seed mycoflora on seed health in respect to seed germination and seedling vigour in groundnut cultivars. Int J Chem Stud 2019;7(2):275-279.
