
Celebrating 50 Years of Genetic Preservation
By Dawn
Lyons-Johnson August 26, 1998The ear of corn is so tiny it's called "ladyfinger," but its
genetic contribution to corn growers--resistance to Northern corn leaf
blight--is enormous. This tiny ear of corn is just one example of the
importance of maintaining genetic diversity in crops through germplasm
preservation. The North
Central Regional Plant Introduction Station of the
Agricultural Research Service at Ames,
Iowa, is one of a quartet of USDA facilities dedicated to preserving the
genetic diversity of crop plants and their wild ancestors. Now celebrating its
50th anniversary, the Ames station is the national repository for corn
germplasm, containing some 15,000 samples. It also houses the national
sunflower germplasm collection and germplasm for a wide array of fruits and
vegetables, from cantaloupe, honeydew melon and muskmelon to carrots and
zucchini. The station also keeps germplasm for speciality crops like mustard,
herbs like basil and dill, and exotic vegetables like amaranth. Plant germplasm is a general term that includes all plant parts that can
generate a new plant. Depending on the species, that could be a leaf, a piece
of stem, a pollen grain or even a few cells that can be cultured to produce a
new plantlet. Germplasm contains all the genetic information necessary for
plant breeders to develop valuable new varieties. The Ames station has more than 44,000 different samples of plant germplasm
stored in climate-controlled units or actually growing on the station's
grounds. The facility not only stores germplasm, but also provides it to
scientists and plant breeders around the world. Each year, the staff sends out
as many as 15,000 samples of seed, plant parts and live plants to other
government labs, private industry and schools at no charge. Scientific contact: Mark P. Widrlechner, acting research leader, ARS
North Central Regional Plant Introduction Station, Ames, Iowa 50011-1170;
phone: 515-294-3511; fax: 515-294-1903; email:
[email protected]. U.S. Department of Agriculture | |