ARS Develops Fungus Resistant Peas

Matt Hopkins Postado por Matt Hopkins|9 de setembro de 2008

Serviço de Pesquisa Agrícola do USDA (ARS) has developed three spring pea germplasm lines resistant to the fungus Fusarium solani. These lines are now available for breeding. The fungus causes Fusarium root rot – a disease affecting peas worldwide.

In 1994, ARS geneticist Fred Muehlbauer, who served as a research leader at the ARS Grain Legume Genetics Physiology Research Unit in Pullman, Washington, US until 2006 – crossed two germplasm lines—X94P275 and 90-2131—with "Dark Skin Perfection," a canning/freezing variety. The offspring plants produced from this line eventually became three germplasm lines that were selected and propagated for release in 2008.

The new lines have shown through three years of field trials to offer some of the highest levels of fusarium root-rot resistance to date. In field trials in 2004, the three lines – RIL 846-34, 846-40 and 847-36 — were scored "7," "7," and "5," respectively, on a scale of zero to 100, where zero signified complete resistance to Fusarium root rot and 100 indicated susceptibility to the disease.

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