Seedling survival of Pinus strobus and its interspecific hybrids after artificial inoculation of Cronartium ribicola

Lu, Pengxin; Sinclair, Robert W.; Boult, Timothy J.; Blake, Stewart G.

doi:10.1016/j.foreco.2005.04.024

Cited by 14 publications

(28 citation statements)

References 6 publications

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“…Unfortunately, despite reported strong resistance to blister rust in field trials and inoculation experiments (Blada 2000, Sniezko et al 2008, seedlings from various hybrid crosses between P. strobus and P. peuce created in Ontario did not show improved resistance. A number of OP progeny from selected hybrid trees had high mortality rates, very similar to those of P. strobus progeny in artificial inoculation experiments (Heimburger 1962(Heimburger , 1972Lu et al 2005). Heimburger (1962) and Blada (2000) suspected that blister rust resistance in P. peuce is polygenic, which may help explain the lower level of resistance achieved in the hybrid crosses in Ontario.…”

Section: Breeding Eastern White Pine Interspecific Hybridsmentioning

confidence: 88%

“…Progeny from almost all selections of eastern white pine consistently accumulated close to 100% mortality at the end of the artificial inoculation experiments (Heimburger 1972;Lu et al 2005;Sniezko et al 2008;Lu, unpublished data). This contrasted sharply with the considerably higher survival rates of Eurasian 5-needle pine species and P. strobus interspecific hybrids (crossed with Eurasian 5-needle pines) in the same experiments.…”

Section: Breeding Eastern White Pine For Blister Rust Resistancementioning

confidence: 97%

“…The successful hybrids produced to date are listed in Table 1. With varying levels of backcrossing to P. strobus, some of these hybrids have shown promise in terms of their blister rust resistance, adaptation, growth performances, and wood quality (Heimburger 1972;Lu et al 2005Lu et al , 2007Lu and Sinclair 2006). …”

Section: Historical White Pine Breeding Efforts In Ontariomentioning

confidence: 99%

“…In contrast to P. strobus, several Eurasian 5-needle pine species showed good natural resistance to blister rust (Heimburger 1962(Heimburger , 1972Kriebel 1983;Garrett 1985;Blada 2000;Lu et al 2005;Sniezko et al 2008). Integrating major resistance genes from Eurasian 5-needle pine species into P. strobus through traditional breeding can be effective if desirable traits of P. strobus are recoverable by progressively backcrossing the resultant hybrid progeny to P. strobus, while retaining satisfactory blister rust resistance.…”

Section: Breeding Eastern White Pine Interspecific Hybridsmentioning

confidence: 99%

“…Several hybrid crosses between P. strobus and P. parviflora created in Ontario since the 1950s (Table 1) were later proven susceptible to blister rust in artificial inoculation experiments (Heimburger 1962(Heimburger , 1972Lu et al 2005 The Forestry Chronicle Downloaded from pubs.cif-ifc.org by 54.244.106.145 on 05/11/18 pollinated by P. strobus trees) with encouraging levels of blister rust resistance. In the same artificial inoculation experiments, the OP progeny from one of the siblings had almost 100% survival compared to near 100% mortality for P. strobus seedlings.…”

Section: Breeding Eastern White Pine Interspecific Hybridsmentioning

confidence: 99%

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Breeding eastern white pine for blister rust resistance: A review of progress in Ontario

Lu¹,

Derbowka²

2009

The Forestry Chronicle

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White pine blister rust (caused by Cronartium ribicola J.C. Fisch.) is a primary cause of poor survival and growth of eastern white pine (Pinus strobus L.) and has contributed to the species' decline across its range. Genetic resistance to C. ribicola is generally weak in eastern white pine, possibly owing to the absence of meaningful resistance alleles. Integrating major resistance genes from Eurasian 5-needle pine species to P. strobus has been demonstrated to be effective through traditional plant breeding approaches. This paper provides a review of progress after more than half a century of breeding and testing in Ontario.Key words: Pinus strobus, white pine blister rust, genetic resistance, interspecific hybridization RÉSUMÉ La rouille vésiculeuse du pin blanc (provoquée par Cronartium ribicola J.C. Fisch.) constitue la cause principale de la grande mortalité et de la faible croissance chez le pin blanc de l'Est (Pinus strobus L.) et a contribué au déclin de l' espèce dans toute son aire de distribution. La résistance génétique au C. ribicola est généralement faible chez le pin blanc de l'Est, possiblement suite à l'absence d'allèles pouvant offrir une résistance significative. L'intégration de gènes de résistance importante tirés d'une espèce eurasienne de pin à cinq aiguilles par le P. strobus s' est avéré être efficace selon les approches habituelles d'hybridation des plantes. Cet article présente une révision des progrès réalisés après plus d'un demi-siècle d'hybridation et d' essai en Ontario.Mots clés : Pinus strobus, rouille vésiculeuse du pin blanc, résistance génétique, hybridation interspécifique

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Section: Breeding Eastern White Pine Interspecific Hybridsmentioning

confidence: 88%

Section: Breeding Eastern White Pine For Blister Rust Resistancementioning

confidence: 97%