PATHOGENIC VARIABILITY OF ASCOCHYTA LENTIS IN BULGARIA
Article Sidebar
Main Article Content
Abstract
Ascochyta blight, caused by Ascochyta lentis Vassiljevsky, is an important foliar disease of lentil (Lens culinaris L.) with worldwide occurrence and is a serious threat to lentil production. The investigation involved 13 isolates of Ascochyta lentis. The pathogen was isolated from naturally infected lentil plants from various locations in Bulgaria, using an agar plate method. Inoculum was also producedby growing isolates on LDA. Ten plants (3 weeks old) of each of the cultivars were sprayed with a freshly prepared spore suspension (105 conidia mL-1). Disease symptoms were scored 14 days after inoculation. The virulence of the isolates was determined with the help of 11 lines and cultivars of lentil (ILL 358, ILL 5480, ILL 2429, ILL 5725, ILL 7537, Laird, Ilina, Bella, Nadejda, Naslada, Zornitsa). Based on the reaction of the used genotypes, the investigated isolates of Asc. lentis were grouped into seven pathotypes. The observations in the present study revealed a significant variation among
the isolates of Ascochyta lentis for morphological traits as well as for pathogenicity.
Downloads
Article Details
References
2. Ahmed, S. and R.A.A. Morrall, 1996. Field reactions of lentil lines and cultivars to isolates ofA scochyta fabae f.sp. lentis. Canadian J. Pl. Pathol., 18: 362–9
3. Ahmed, S., R.A.A. Morrall and J.W. Sheard, 1996. Virulence of Ascochyta fabae f.sp. lentis on lentils. Canadian J. Pl. Pathol., 18: 354-361
4. Erskine, W., B. Bayaa and M.C. Saxena, 1996. Registration of ILL 5588 lentil germplasm resistant to vascular wilt and Ascochyta blight. Crop Sci., 36: 1080
5. Gossen, B.D. and R.A.A. Morrall, 1983. Effect of Ascochyta blight on seed yield and quality of lentils. Canadian J. Pl. Pathol., 5: 168-173.
6. Gossen, B.D., J.W. Sheppard, C.J. Beauchamp and R.A.A. Morrall, 1986. Ascochyta lentis renamed Ascochyta fabae f.sp. lentis. Canadian J. Pl. Pathol., 8: 154–60
7. Grewal, J.S. 1984. Evidence of physiologic races in Ascochyta rabiei of chickpea. In: Proceedings of the Workshop on Ascochyta Blight and Wintering of Chickpeas. (Eds.): M.C. Saxena and K.B. Singh. ICARDA, Aleppo, Syria, 55-65.
8. Iqbal, S.M., A. Bakhsh and B. A. Malik, 1990. Identification of resistant sources to Ascochyta blight in lentil. LENS Newsleter, 17: 26-27.
9. Iqkbal, S.M., C.A. Rauf and S. Ali, 2006. Pathogenic variability among the isolates of Ascochyta lentis. International journal of agriculture & biology, 618-620, http://www.fspublishers.org
10. Kaiser, W.J. and R.M. Hannan, 1986. Incidence of seed borne Ascochyta lentis in lentil germplasm. Phytopathology, 76: 355–60
11. Kaiser, W.J., 1992. Fungi associated with the seeds of commercial lentils from the US Pacific Northwest. Pl. Disease, 76: 605-610.
12. Kaiser, W.J., R.M. Hannan and J.D. Rogers, 1994. Factors affecting growth and sporulation of Ascochyta fabae f.sp. lentis. Pl. Disease, 78: 374-379
13. Malik, B.A., 1983. Discussion remarks on lentil breeding II. In: Saxena, M.C. and S. Verma, (eds.) Proceedings of International Workshop on Faba bean, Kabuli Chickpea and Lentils in 1980s, P: 105 May 1983, Aleppo, Syria. International Center for Agricultural Research in Dry Areas.
14. Morrall, R.A.A. and J.W. Sheppard, 1981. Ascochyta blight of lentils in Western Canada: 1978-1980. Canadian Pl. Disease Survey, 61: 7–13
15. Nasir, M. and T.W. Bretag, 1996. Screening lentil for resistance to Australia isolates of Ascochyta blight. LENS Newsletter, 23: 7-9
16. Nasir, M. and Bretag, T.W, (1997) - Prevalence of Ascochyta fabae f sp. lentis on lentil seeds from Victoria, Australia. Australasian Plant Pathology 26: 117-120.
17. Nene, Y.L., S.B. Hanounik, S.H. Qureshi and B. Sen, 1988. Fungal and bacterial foliar diseases of peas, lentils, faba bean and chickpea. In: Summer, R.J. (ed.), World Crops: Cool Season Food Legumes, Pp: 577-89. Kluwer Academic Publishers, Dordrecht, The Netherlands.
18. Singh, G., K.Singh, A.S. Gill and J.S. Brar, 1982. Screening of lentil varieties/lines for blight resistance. Indian Phytopathol., 35: 678-679.
19. Sugha, S.K., B.M. Singh and S.K. Sharma, 1991. Performance of lentil varieties/germplasm liens against blight. LENS Newsletter 18: 34-35.
20. Tay, J., 1989. Inheritance of resistance to Ascochyta blight of lentil. M.Sc. Thesis, Department of Crop Science and Plant Ecology, University of Saskatchewan, Saskatoon, Canada