Future Needs for Maximum Progress in Genetic Improvement of Disease Resistance in Forest Trees

Schreiner, E. J.

doi:10.1016/b978-0-08-011764-5.50085-7

Cited by 4 publications

(15 citation statements)

References 16 publications

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“…La selección de olmos resistentes a la grafiosis no agresiva en la Península Ibérica dio lugar al clon Buisman, pero al ser plantado en Holanda, su utilización fue desechada por su sensibilidad en el mencionado país a Neetria einnabarina. La importancia de los efectos de la interacción entre el patógeno y el medio ha sido señalada por Schreiner (1966), al mostrar tales efectos en los clones de Populus, uno de los géneros que sufren mayor número de enfermedades en el campo forestal, pero en el que amplias ganancias de resistencia son posibles. Al respecto cabe destacar la gran capacidad de adaptación de algunos clones, como 1-124, a muy diversas condiciones de crecimiento, con una permanencia de su potencial de crecimiento que no ha envejecido tras el casi medio siglo que viene utilizándose.…”

Section: Transmision De La Resistenciaunclassified

Mejora genética y la resistencia a enfermedades y plagas

Carmona¹

1991

C&I Forestal

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A medida que progresan los programas de mejoramiento genético, el perfeccionamiento de la resistencia a plagas y enfermedades forestales se torna cada día más importante. Esto se debe a que uno de los objetivos prioritarios de la gestión o manejo de masas forestales ha sido alcanzar producciones elevadas y estables, tanto en calidad como en cantidad de madera. Conseguirlo ha sido posible al alterar los bosques primitivos y establecer masas homogéneas de reducida diversidad genética. Esto se ha conseguido a través de monocultivos heterozigotos, de plantas alóctonas y autóctonas, y de cultivos de plantas monoclonales, prácticas que han conducido a un alejamiento de la adaptación al medio y sus plagas y enfermedades.

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Section: Transmision De La Resistenciaunclassified

Mejora genética y la resistencia a enfermedades y plagas

Carmona¹

1991

C&I Forestal

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“…Hopefully, resistance can be found in populations closer genetically to adapted varieties and cultivars than from populations of near relatives. This facilitates transfer of resistance genes into a commercially acceptable cultivar or clone whose only principal fault is that it is susceptible to a particular pathogen (2,8,16,20,30,31,33,42).…”

Section: The Search For Disease-resistant Trees By Malcolm C Shurtleffmentioning

confidence: 99%

“…If resistance is found, the genetics of inheritance should be determined to choose the proper breeding procedure and incorporate this resistance into a commercially acceptable variety. Three main types of inheritance of disease resistance exist: 1) Mendelian inheritance, 2) polygenic inheritance, and 3) extrachromosomal or cytoplasmic inheritance (2,16,20,21,30,31,33,42).…”

Section: The Search For Disease-resistant Trees By Malcolm C Shurtleffmentioning

confidence: 99%

“…Disease resistance is "built into" the plant, whereas other means of control can be affected by weather, mechanical or other failure, and improper planning resulting in a delay of applying control measures as is common with protective chemical sprays. The basic principles underlying plant breeding programs are the same regardless of species, be it wheat, corn, elms, or maples (2,5,31,42,49).…”

Section: The Search For Disease-resistant Trees By Malcolm C Shurtleffmentioning

confidence: 99%

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The Search for Disease-Resistant Trees

Shurtleff¹

1980

AUF

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“…VIART (1998) andPARKER et al (1996) proposed alternate row plantations of different clones, to reduce parasite progression and rapid selection of complex pathotypes. 'Synthetic multiclonal hybrid varieties' were suggested by SCHREINER (1966) to reduce epidemiological risks. They consist of poplar clone mixtures with different resistances to one or more parasites and with similar growth requirements.…”

Section: Introductionmentioning

confidence: 99%

Varietal mixture of poplar clones: Effects on infection by Melampsora larici‐populina and on plant growth

Miot¹,

Frey²,

Pinon³

1999

European Journal of Forest Pathology

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The effects of poplar varietal mixture on infection levels caused by Melampsora larici-populina and on plant growth were studied during two consecutive growing seasons. The varietal mixture consisted of an intimate mixture of three poplar clones, Populus x interamericana 'Boelare', 'Rap' and Populus candicans 'NNT', expressing different race-specific resistances. Infection levels of M. larici-populina were assessed in monoclonal and polyclonal plots. Plant heights were determined at the end of each growing season. Infection levels in the growing season of the first year were not significantly different between monoclonal and polyclonal plots at the end of the epidemic. During the second growing season, a naturally occurring complex pathotype, able to infect clones 'Boelare' and 'Rap', invaded some plots prematurely and changed the composition of pathogen population. During this season, four infection assessments were conducted. Infection reduction in polyclonal plots compared with monoclonal plots was observed on 'Boelare' and P. candicans plants. Nevertheless, no significant difference was observed for growth between monoclonal and polyclonal plots. Biological factors which may be involved in the reduction of infection levels in polyclonal plots are dilution of susceptible individuals, physical barriers caused by resistant plants and cross-protection. A high auto-infection ratio may have partly hidden the positive effects of the clonal mixture.

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Future Needs for Maximum Progress in Genetic Improvement of Disease Resistance in Forest Trees

Cited by 4 publications

References 16 publications

Mejora genética y la resistencia a enfermedades y plagas

Mejora genética y la resistencia a enfermedades y plagas

The Search for Disease-Resistant Trees

Varietal mixture of poplar clones: Effects on infection by Melampsora larici‐populina and on plant growth

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