story to find out more.
ARS plant pathologist Marcial Pastor-Corrales
inoculates bean plants with spores of the bean rust fungus. Click the image
for more information about it.
New Pintos Resist Bean Diseases
June 12, 2006
Five new pinto bean lines released by
the Agricultural Research Service (ARS)
can resist significant bean diseases.
The new lines, known as BelDakMi-RMR and numbered 19 to 23, are
resistant to common bean rust, caused by the rust fungus Uromyces
appendiculatus, and to the common mosaic and common mosaic necrosis
viruses. These diseases reduce yield and crop quality and increase production
Scientists at the
Laboratory, part of ARS'
A. Wallace Beltsville (Md.) Agricultural Research Center, bred the lines in
collaboration with colleagues at North
Dakota State and Michigan State
Most commercial bean varieties contain two or fewer disease-resistance
genes. The BelDakMi pintos have six resistance genes--more than any other known
bean. Each contains four genes for resistance to U. appendiculatus, and
two for resistance to bean common mosaic and bean common mosaic necrosis.
According to ARS plant geneticist
Pastor-Corrales, who worked on the project, the pintos are resistant to
every known strain of these variable pathogens.
Beans are an economically important crop in this country and a nutritious
source of vitamins, proteins, iron, folate, fiber and complex carbohydrates for
millions of people around the world.
more about this research in the June 2006 issue of Agricultural
ARS is the U.S. Department of
Agricultures chief scientific research agency.