INFLUENCE OF PHYTOPATHOGENIC FUNGI ON QUALITY PARAMETERS OF GREEN BEAN SEEDS IN A FIVE-YEAR PERIOD
Abstract
Green beans are among the most essential legumes because of their nutritional value. In this paper, the quality parameters of two varieties of green beans (GB1 and GB2) on the territory of Smederevska Palanka. The energy germination and total germination were the highest in the first observed year and amounted to 63% and 88% for GB1, respectively. For GB2 the energy germination and total germination (2018) were 71% and 75%, respectively. A significant decline in total germination was determined in 2020. and amounted to 75% for GB1 and 67% for GB2( p<0.05). The lowest energy germination and total germination were obtained in the last observed year (2022) in both genotypes and statistically increased infection with Alternaria sp. and Fusarium sp. Detection of phytopathogenic fungi was carried out using filter paper and potato dextrose agar method. The presence of Alternaria sp. was detected for GB1 and GB2 in the range of 2-3% (2018); Fusarium sp. was 3%. In the last observed year, the presence of other fungi was determined, apropos a higher percentage of diseased seeds with Alternaria sp. and Fusarium sp. (5-6%). Other phytopathogenic fungi were detected in both genotypes: Aspergillus sp. (1-3%), Penicillium sp. (1-4%), Rhizopus sp. (1-3%) and Rhizoctonia solani (2-3%). The moisture was 8.5-10.9 for both genotypes (p>0.05). The impact of phytopathogenic fungi on green beans was reflected in the reduction of total germination, and therefore in seed quality and yield.
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