Indexing

Screening of Common Bean Genotypes for Resistance against Fusarium Wilt

Author: Tabasia Amin, Sheikh Saima Khushboo and Aarushi Singh

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Abstract

Fusarium wilt is the most serious disease of common bean causing 10 to 15 per cent yield losses each year. It is a soil-borne fungal disease where water conducting (xylem) vessels become blocked. The pathogenicity of the isolated fungus was proving by Koch’s postulates. Further 50 common bean genotypes were screened under artificially inoculated controlled conditions among which 4 genotypes (G-257, UK-2, G-341, G-832) showed resistant reaction, 4 genotypes (G-716, G-195, G-2, G-185) showed moderately resistant reaction, 21 genotypes (WB-634, WB-642, WB-1318, WB-969, WB-160, WB-967, WB-923, WB-966, WB-1587, WB-4709, WB-651, WB-1634, WB-1282, WB-6, WB-482, WB-481, G-1313, WB-164, WB-13398, WB-935, WB-25575) showed moderately susceptible reaction, 18 genotypes (WB-1319, WB-1436, WB-1413, PBG-111, WB-662, WB-4564, WB-371, WB-1644, WB-333, WB-206, WB-206, WB-901, WB-956, WB-952, WB-451, WB-222, WB-1429, WB-1187) showed susceptible reaction and remaining 4 genotypes (Arka-Anop, SFB-1, WB-352, WB-1319, SR-1) exhibited highly susceptible reaction.

Keywords

Fusarium, screening, genotypes, resistant, susceptible, common bean, wilt, pathogen

Conclusion

Among fifty genotypes, evaluated for their resistance to bean wilt disease under controlled conditions, 18 genotypes were found to be resistant, 20 genotypes, moderately resistant, 8 genotypes moderately susceptible and 4 genotypes susceptible at seedling stage. Whereas, 4 genotypes were observed resistant, 4 genotypes moderately resistant, 21 genotypes moderately susceptible, 18 genotypes susceptible and 4 genotypes highly susceptible at flowering stage. The resistant genotypes at seedling stage may be planted in areas where disease occurs at seedling stage only. Delay in sowing can also help to escape disease from such areas.

References

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How to cite this article

Tabasia Amin, Sheikh Saima Khushboo and Aarushi Singh (2021). Screening of Common Bean Genotypes for Resistance against Fusarium Wilt. Biological Forum – An International Journal, 13(3a): 835-839.