


Wheat
The most recent success
story in the USA-ICARDA collaboration in wheat breeding stems from a joint
project with Kansas State University (KSU), the US Department of Agriculture
(USDA), and the Moroccan national program. Scientists worked on Screening
wheat germplasm for Hessian fly resistance under dryland conditions in WANA.
The KSU team identified resistance genes which have already been incorporated
into varieties of bread and durum wheats for release in Morocco and North
Africa. Genes for resistance to US Hessian fly biotypes have also been identified
in Moroccan wheats, and are being used in breeding programs in the USA. Hessian
fly was accidentally imported into the USA during the War of Independence
by mercenaries from Hesse, southern Germany, in straw brought for their horses.
The flys larvae suck valuable nutrients from the plant and severe infestations
can wipe out crops unless chemical control is used. The resistant varieties
now being released reduce chemical use.
CIMMYT, the International Wheat and Maize Research Center, ICARDAs sister
Center based in Mexico, has been a key partner in this pioneering work.
Scientists from the University of California, Riverside, have worked with
ICARDA scientists in a project on Collection of wheat wild relatives and inheritance
studies of gliadins in diploid wheats. Washington State University, Texas
A&M University and the European Parasite Laboratory (USDA-Agricultural
Research Service or ARS) have collaborated on a Survey of Russian wheat aphid
and its natural enemies in WANA. North Dakota State University (NDSU) collaborates
with ICARDA on development of resistant/tolerant material to black point and
Fusarium. The NDSU durum breeder identified durum lines with tolerance to
Fusarium from ICARDA
material.
At Cornell University, scientists have been working with the durum breeding
program at ICARDA on Association of molecular markers with morphophysiological
traits associated with constraints of Mediterranean dryland conditions in
durum wheat. The project involves the use of molecular markers for genome
mapping and for marker-assisted selection for stress resistance. ICARDA has
also worked with Cornell University and the Agricultural Research Center (ARC),
Egypt, on a project called Application of molecular genetics for development
of wheat varieties possessing high-yield potential, stress tolerance, and
improving grain quality. This project, started in 1997, was funded under USAID-ATUT
(United States Agency for International DevelopmentAgricultural Technology
Utilization and Transfer Project), Egypt, as was Leveraging an integrated
expert system/crop modeling system for farm-level wheat crop management, which
involves ICARDA, ARC and Michigan State University (MSU). Prior to this, ICARDA
worked closely with scientists from MSU on the development of the CERES-N
crop growth simulation models for durum and bread wheats and for barley.
Extending ICARDAs use of biotechnology techniques is another project,
Development of bread wheat cultivars facilitated by microsatellite DNA markers,
in conjunction with the USDA/ARS Beltsville Agricultural Research Center in
Maryland.
The US is a member of the ICARDA-coordinated SEWANA (South Europe-West Asia-North
Africa) Durum Wheat Research Network, which links durum wheat breeders in
these and other regions to promote the development of techniques and breeding
material of high-quality durum wheat adapted to Mediterranean-type climates.

Wheat was
a loser in the War of Independence which brought Hessian fly to the United
States.

Scientists
from the University of California, Riverside collected wheat wild relatives
in Syria as part of a joint project with ICARDA.

Durum wheat
produces the flour which makes many foods from spaghetti through to local
African and Asian dishes.