Sources of Resistance to Anthracnose (Colletotrichum truncatum) in Wild Lens Species |
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| Authors: | A Tullu L Buchwaldt M Lulsdorf S Banniza B Barlow A E Slinkard A Sarker B Tar’an T Warkentin A Vandenberg |
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| Institution: | (1) Crop Development Centre, University of Saskatchewan, 51 Campus Dr., Saskatoon, SK, Canada, S7N 5A8;(2) Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, Canada, S7N 0X2;(3) International Centre for Agricultural Research in the Dry Areas, P.O. Box 5466, Aleppo, Syria |
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| Abstract: | Lentil anthracnose (Colletotrichum truncatum (Schwein.) Andrus et W.D. Moore is a potential threat in many lentil (Lens culinaris Medik.) production regions of North America. In the lentil germplasm maintained in Germany and North America, 16 lines were
reported to have resistance to race Ct1, but none has resistance reported to race Ct0. The objective of this study was to
examine accessions of wild Lens species for their resistance to races Ct1 and Ct0 of lentil anthracnose. Five hundred and seventy-four wild accessions of
six species and control lines were screened in two replications under both field and greenhouse conditions using a 1–9 scoring
scale (1, highly resistant; 2–3, resistant; 4–5, moderately resistant; 6–7, susceptible; and 8–9, highly susceptible). Indianhead
and PI 320937 were resistant while Eston and Pardina were susceptible to race Ct1 as expected. However, none of the check
lines were resistant to race Ct0. Among the six Lens wild species tested, accessions of Lens ervoides (Brign.) Grande had the highest level of resistance, 3–5 to race Ct1 and Ct0 followed by L. lamottei Czefr. in the field and greenhouse. Lens orientalis (Boiss.), L. odemensis L., L. nigricans (M. Bieb.) Godron and L. tomentosus L. were highly susceptible, 8–9 to race Ct0 in the greenhouse. The highest frequency of resistance, especially in L. ervoides (Brign.) Grande, was found in accessions originating from Syria and Turkey. The usefulness of these L. ervoides (Brign.) Grande accessions as sources of resistance to the more virulent race of anthracnose in a lentil breeding program
is discussed. |
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| Keywords: | Anthracnose Colletotrichum truncatum Lentil Race Ct0 Race Ct1 Resistance Wild Lens |
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