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Title: Kochia prostrata germplasm collection expedition to Kazakhstan

Author: Waldron, Blair L.; Harrison, R. Deane; Dzyubenko, Nicolai I.; Khusainov, Auskhan; Shuvalov, Sergey; Alexanian, Sergey;

Date: 2001

Source: In: McArthur, E. Durant; Fairbanks, Daniel J., comps. Shrubland ecosystem genetics and biodiversity: proceedings; 2000 June 13-15; Provo, UT. Proc. RMRS-P-21. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 113-117.

Publication Series: Proceedings (P)

   Note: This article is part of a larger document. View the larger document

Description: The low stature of ‘Immigrant’ forage kochia (Kochia prostrata) limits its use as winter forage and habitat for livestock and wildlife. In October 1999, a germplasm collection trip was undertaken to obtain forage kochia ecotypes that have potential to improve fall and winter forage. The collection area was north of the Aral Sea in the Clay and Sand Desert Steppes of Kazakhstan. Seed samples brought back to the U.S. included 192 forage kochia ecotypes. The desert shrub ecosystems had major components of chenopods. In general, the area was classified as Brown Desert Steppe, Light Chestnut Steppe, Solonetz, or Degraded Solonetz. Most soils in the Clay Desert Steppes had a clay to clay loam subsoil and were generally saline and alkaline. Elevation ranged from 250 to 1,000 feet above sea level. Average annual precipitation was 6 to 9 inches. Average annual air and soil surface temperatures were 41 and 44 degrees Fahrenheit, respectively. On average, forage kochia made up 6 percent of the plant composition on sites in the native steppe where it was present, ranging from 1 to 20 percent. Forage kochia was more prevalent when present on disturbed areas such as abandon fields, homesteads, and roadways, where it comprised 15 to 60 percent of the plant composition. Flow cytometry analysis revealed that 2x, 4x, and 6x ploidy levels of forage kochia were collected.

Keywords: wildland shrubs, genetics, biodiversity, disturbance, ecophysiology, community ecology

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Waldron, Blair L.; Harrison, R. Deane; Dzyubenko, Nicolai I.; Khusainov, Auskhan; Shuvalov, Sergey; Alexanian, Sergey. 2001. Kochia prostrata germplasm collection expedition to Kazakhstan. In: McArthur, E. Durant; Fairbanks, Daniel J., comps. Shrubland ecosystem genetics and biodiversity: proceedings; 2000 June 13-15; Provo, UT. Proc. RMRS-P-21. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 113-117.

 


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