Identification of Sources of Resistance to Wilt caused by Ceratocystis fimbriata in Pomegranate

Author: G. Abhishek, G. Manjunatha* , R.K. Mesta, R. Gunnaiah and R. Suma

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Abstract

A glass house experiment was conducted at the College of Horticulture, Bagalkot, Karnataka, during 2019 to identify potential rootstocks resistant/tolerant to Ceratocystis fimbriata. Wilt is one of the important diseases of pomegranate adversely affecting crop cultivation in all major growing regions of the country. The pathogen survives in the soil for many years that results disease mitigation is challenging. Managing wilt in pomegranate through an integrated approach has been suggested, and the use of resistant varieties is one of the economical methods. A total of 182 accessions were collected and screened under glasshouse condition by using sick pot method to identify source of resistance to pomegranate wilt. The results indicated that majority of the pomegranate genotypes exhibited complete susceptibility after pathogen inoculation. Only three cultivars Bedana Suri, Yercaud and Yercaud local displayed delayed wilting symptom upto 360 days after pathogen inoculation. These materia

Keywords

Pomegranate, Ceratocystis fimbriata, Pomegranate wilt, Host-plant resistance.

Conclusion

Ceratocystis fimbriata is the major cause of vascular pomegranate wilt. In addition, some pathogens have been reported to destroy root and collar stems of plants, likely to result in isolated wilt infections. Although appropriate wilt management strategies involving cultural practices, sanitation measures and chemical treatment have been developed and identified and provide satisfying wilt control, but there is a need to develop wilt-resistant rootstock to implement appropriate wilt-resistant varieties to ensure a more economical and efficient wilt management strategies. Only three cultivars Bedana Suri, Yercaud and Yercaud local displayed delayed wilting symptom up to 360 days after pathogen inoculation. A clear understanding of different host range, resistant rootstock evaluation and detailed understating of tolerant lines in near future may be helpful by successful breeding program for resistant cultivar development. Our results have made it possible to identify new sources of resis

References

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How to cite this article

G. Abhishek, G. Manjunatha, R.K. Mesta, R. Gunnaiah and R. Suma (2022). Identification of Sources of Resistance to Wilt caused by Ceratocystis fimbriata in Pomegranate. Biological Forum – An International Journal, 14(1): 1193-1198.