Contributions to the Host Range of <i>Puccinia poae‐nemoralis</i> Otth and <i>Puccinia</i> poarum Nielsen

Cagaš, B.; Marková, Jaroslava

doi:10.1111/j.1439-0523.1988.tb00277.x

Cited by 4 publications

(2 citation statements)

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“…var poae‐nemoralis (Otth.) and P. poarum are able to develop new races which may rapidly spread across Europe on susceptible Kentucky bluegrass cultivars (Cagas and Markova, 1988). The durability of resistance to rusts may be increased by using many different strategies for deploying resistant ecotypes.…”

Section: Discussionmentioning

confidence: 99%

“…Both of these rust species often occur on the same plant or even on the same leaf. They are common on Kentucky bluegrass used for forage, turf and in fields used for seed production (Watkins, 1981; Meyer, 1982; Urban and Markova, 1987; Cagas and Markova, 1988; Smiley et al., 1992; Cagas, 1992; Vargas, 1994). Development of rust diseases is favoured by humid weather with night temperatures of 21–24°C, day temperatures of 29–35°C and frequent light rain (or watering) (Lamey et al., 1996).…”

Section: Introductionmentioning

confidence: 99%

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Preliminary Observations on Resistance to Rust Diseases of Kentucky Bluegrass Ecotypes from Poland

Czembor

Feuerstein

Żurek

2001

Journal of Phytopathology

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Four hundred and forty‐four ecotypes of Kentucky bluegrass (Poa pratensis L.) collected from Poland were screened for rust resistance. A field experiment was established at Hof Steimke, DSV (Deutschen Saatveredelung), Germany. The ecotypes originated from the Polish Gene Bank, IHAR – Botanical Garden, Bydgoszcz. Sixty‐two (13.9%) ecotypes that scored on average more than 5 were included in a group with high resistance. Ecotypes scored on average less than 5 were either included in a susceptible group (average scores 4.0–4.9) or a very susceptible group (average scores 2.0–3.9). There were 181 ecotypes in the susceptible group (40.8%) and 201 (45.3%) in the very susceptible group. Thirty‐three (7.4%) ecotypes were more resistant and 29 (6.5%) ecotypes had resistance on the level of the most resistant control variety Ottos (score of resistance 5.3). Eight ecotypes (1.8%) with the highest level of resistance (score 7 or higher) were identified as especially promising sources of rust resistance. One ecotype (141858) showed reaction type 9 in both years and another one (141903) showed reaction type 9 in one year and reaction type 8 in another year (mean 8.5). Six ecotypes were scored on average 7 or 7.5. For 17 different habitats from which the tested ecotypes were collected only those ecotypes originating from 10 habitats (meadow, peat meadow, forest meadow, pasture, field, lakeside, waterside, ditch, roadside and gravel pit) showed high levels of resistance to rust. The value of newly identified resistant ecotypes for control of rusts on Kentucky bluegrass is discussed.

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Section: Discussionmentioning

confidence: 99%