Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa

M.G. Teklu, T.H. Been, C.H. Schomaker, L.P.G. Molendijk, T.G. van Beers, J.E. Beniers

Research output: Chapter in Book/Report/Conference proceedingAbstractAcademic

Abstract

A pilot experiment was carried out using two partially resistant genotypes AR04-4096, 2011M1 and the control cv. Désirée to test whether these genotypes possess both tuber and root resistance. Four plants of Avena strigosa, and one potato plant, consisting of a single sprout, were sown in 10 kg pots. The resistant genotypes were tested with and without A. strigosa and cv. Désirée was used as a susceptible control. Pots were inoculated with a moderate nematode density: 16 J2 g dry soil-1. Final population densities were estimated from the soil, roots and tuber peel. The roots and peel were incubated in a spray-mist chamber for 4 and 7 weeks, respectively. The numbers of nematodes extracted from soil, roots and tubers in the pots with A. strigosa and the resistant genotypes increased compared to those without A. strigosa. The relative susceptibilities (%RS) of the genotypes AR04-4096 and 2011M1, without A. strigosa, were 0.18 and 0.52, respectively, which is consistent with previous results. The presence of A. strigosa increased the relative combined host status (RH) for AR04-4096 compared to Désirée till 25%. Avena strigosa slightly increased the estimated relative susceptibility of tubers of the tested genotypes: %RST of AR04-4096 increased from 0 to 0.04%; that of 2011M1 from 0.56 to 2.96%. The negative effect of A. strigosa on the percentage of nematode-free tubers of AR04-4096 was negligible, but nematode-free tubers decreased from 84% to 21% in 2011M1. It can be concluded that the tested partially resistant genotypes possessed partial resistance in both roots and tubers
Original languageEnglish
Title of host publicationProceedings of the 6th International Congress of Nematology
Pages75-75
Publication statusPublished - 2014
Event6th International Congress of Nematology, Cape Town, South Africa -
Duration: 4 May 20149 May 2014

Conference

Conference6th International Congress of Nematology, Cape Town, South Africa
Period4/05/149/05/14

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Avena strigosa
tubers
potatoes
genotype
testing
Nematoda
soil
population density

Cite this

Teklu, M. G., Been, T. H., Schomaker, C. H., Molendijk, L. P. G., van Beers, T. G., & Beniers, J. E. (2014). Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa. In Proceedings of the 6th International Congress of Nematology (pp. 75-75)
Teklu, M.G. ; Been, T.H. ; Schomaker, C.H. ; Molendijk, L.P.G. ; van Beers, T.G. ; Beniers, J.E. / Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa. Proceedings of the 6th International Congress of Nematology. 2014. pp. 75-75
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title = "Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa",
abstract = "A pilot experiment was carried out using two partially resistant genotypes AR04-4096, 2011M1 and the control cv. D{\'e}sir{\'e}e to test whether these genotypes possess both tuber and root resistance. Four plants of Avena strigosa, and one potato plant, consisting of a single sprout, were sown in 10 kg pots. The resistant genotypes were tested with and without A. strigosa and cv. D{\'e}sir{\'e}e was used as a susceptible control. Pots were inoculated with a moderate nematode density: 16 J2 g dry soil-1. Final population densities were estimated from the soil, roots and tuber peel. The roots and peel were incubated in a spray-mist chamber for 4 and 7 weeks, respectively. The numbers of nematodes extracted from soil, roots and tubers in the pots with A. strigosa and the resistant genotypes increased compared to those without A. strigosa. The relative susceptibilities ({\%}RS) of the genotypes AR04-4096 and 2011M1, without A. strigosa, were 0.18 and 0.52, respectively, which is consistent with previous results. The presence of A. strigosa increased the relative combined host status (RH) for AR04-4096 compared to D{\'e}sir{\'e}e till 25{\%}. Avena strigosa slightly increased the estimated relative susceptibility of tubers of the tested genotypes: {\%}RST of AR04-4096 increased from 0 to 0.04{\%}; that of 2011M1 from 0.56 to 2.96{\%}. The negative effect of A. strigosa on the percentage of nematode-free tubers of AR04-4096 was negligible, but nematode-free tubers decreased from 84{\%} to 21{\%} in 2011M1. It can be concluded that the tested partially resistant genotypes possessed partial resistance in both roots and tubers",
author = "M.G. Teklu and T.H. Been and C.H. Schomaker and L.P.G. Molendijk and {van Beers}, T.G. and J.E. Beniers",
year = "2014",
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booktitle = "Proceedings of the 6th International Congress of Nematology",

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Teklu, MG, Been, TH, Schomaker, CH, Molendijk, LPG, van Beers, TG & Beniers, JE 2014, Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa. in Proceedings of the 6th International Congress of Nematology. pp. 75-75, 6th International Congress of Nematology, Cape Town, South Africa, 4/05/14.

Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa. / Teklu, M.G.; Been, T.H.; Schomaker, C.H.; Molendijk, L.P.G.; van Beers, T.G.; Beniers, J.E.

Proceedings of the 6th International Congress of Nematology. 2014. p. 75-75.

Research output: Chapter in Book/Report/Conference proceedingAbstractAcademic

TY - CHAP

T1 - Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa

AU - Teklu, M.G.

AU - Been, T.H.

AU - Schomaker, C.H.

AU - Molendijk, L.P.G.

AU - van Beers, T.G.

AU - Beniers, J.E.

PY - 2014

Y1 - 2014

N2 - A pilot experiment was carried out using two partially resistant genotypes AR04-4096, 2011M1 and the control cv. Désirée to test whether these genotypes possess both tuber and root resistance. Four plants of Avena strigosa, and one potato plant, consisting of a single sprout, were sown in 10 kg pots. The resistant genotypes were tested with and without A. strigosa and cv. Désirée was used as a susceptible control. Pots were inoculated with a moderate nematode density: 16 J2 g dry soil-1. Final population densities were estimated from the soil, roots and tuber peel. The roots and peel were incubated in a spray-mist chamber for 4 and 7 weeks, respectively. The numbers of nematodes extracted from soil, roots and tubers in the pots with A. strigosa and the resistant genotypes increased compared to those without A. strigosa. The relative susceptibilities (%RS) of the genotypes AR04-4096 and 2011M1, without A. strigosa, were 0.18 and 0.52, respectively, which is consistent with previous results. The presence of A. strigosa increased the relative combined host status (RH) for AR04-4096 compared to Désirée till 25%. Avena strigosa slightly increased the estimated relative susceptibility of tubers of the tested genotypes: %RST of AR04-4096 increased from 0 to 0.04%; that of 2011M1 from 0.56 to 2.96%. The negative effect of A. strigosa on the percentage of nematode-free tubers of AR04-4096 was negligible, but nematode-free tubers decreased from 84% to 21% in 2011M1. It can be concluded that the tested partially resistant genotypes possessed partial resistance in both roots and tubers

AB - A pilot experiment was carried out using two partially resistant genotypes AR04-4096, 2011M1 and the control cv. Désirée to test whether these genotypes possess both tuber and root resistance. Four plants of Avena strigosa, and one potato plant, consisting of a single sprout, were sown in 10 kg pots. The resistant genotypes were tested with and without A. strigosa and cv. Désirée was used as a susceptible control. Pots were inoculated with a moderate nematode density: 16 J2 g dry soil-1. Final population densities were estimated from the soil, roots and tuber peel. The roots and peel were incubated in a spray-mist chamber for 4 and 7 weeks, respectively. The numbers of nematodes extracted from soil, roots and tubers in the pots with A. strigosa and the resistant genotypes increased compared to those without A. strigosa. The relative susceptibilities (%RS) of the genotypes AR04-4096 and 2011M1, without A. strigosa, were 0.18 and 0.52, respectively, which is consistent with previous results. The presence of A. strigosa increased the relative combined host status (RH) for AR04-4096 compared to Désirée till 25%. Avena strigosa slightly increased the estimated relative susceptibility of tubers of the tested genotypes: %RST of AR04-4096 increased from 0 to 0.04%; that of 2011M1 from 0.56 to 2.96%. The negative effect of A. strigosa on the percentage of nematode-free tubers of AR04-4096 was negligible, but nematode-free tubers decreased from 84% to 21% in 2011M1. It can be concluded that the tested partially resistant genotypes possessed partial resistance in both roots and tubers

M3 - Abstract

SP - 75

EP - 75

BT - Proceedings of the 6th International Congress of Nematology

ER -

Teklu MG, Been TH, Schomaker CH, Molendijk LPG, van Beers TG, Beniers JE. Testing for tuber resistance against M. chitwoodi in partially resistant potato genotypes with Avena strigosa. In Proceedings of the 6th International Congress of Nematology. 2014. p. 75-75