Genetic Resources and Crop Evolution

, Volume 46, Issue 5, pp 477–484 | Cite as

Completion of the agronomic evaluations of Medicago ruthenica [(L.) Ledebour] germplasm collected in Inner Mongolia

  • T. A. Campbell
  • G. Bao
  • Z. L. Xia

Abstract

Because Medicago ruthenica [(L.) Ledebour] is a potential new forage legume, we collected 90 accessions in Inner Mongolia in 1991. The 40 accessions evaluated in this study (E2) trace to 13 collection sites ranging from 40° 40′ (N) × 111° 15′ (E) to 42° 55′ (N) × 122° 20′ (E) and to altitudes ranging from 175 to 1493 m. Nineteen of these accessions were collected from new or under-represented sites in generally milder and drier climates (temperate desert steppes), compared to the 50 accessions evaluated earlier (E1). All accessions were evaluated at Beltsville, MD (USA) on a B and K deficient Iuka sandy loam (coarse-loamy, siliceous, acid, thermic, Aquic Udigluvent; pH 6.4) in two-year studies. Significant variation was noted in E1 and E2 for dry matter yield, growth habit, leaf shape, and plant height and width. Upright growth habit and leaf narrowness, and procumbency and yield were positively correlated in both evaluations, but no particular leaf shape or growth habit was correlated with tolerance to winter conditions. In E2, leaf:stem ratios of four M. ruthenica accessions and a cultivated alfalfa (M. sativa L.) check were not significantly different, but M. ruthenica was significantly more tolerant of potato leafhopper (Empoasca fabae Harris) feeding than was M. sativa. Second-year alfalfa dry matter yield was about five times larger than that of M. ruthenica. Many of the highest yielding accessions were collected near cultivated fields and/or buildings. Although data for both evaluations demonstrated the same basic trends, there were sufficient deviations to emphasize the value of evaluating the entire germplasm collection.

alfalfa exploration genetic resources Medicago ruthenica Medicago sativa 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Balabaev, G.A., 1934. Yellow lucernes of Siberia, Medicago ruthenica (L.) Lebd. and M. platycarpos (L.) Lebd. Bull. App. Bot. Genet. Plant Breeding Service 7: 113–123.Google Scholar
  2. Barnes, D.K., B.P. Goplen & J.E. Baylor, 1988. Highlights in the USA and Canada. In: Hanson A. A., D. K. Barnes & R. R. Hill (Eds.), Alfalfa and Alfalfa Improvement. Agronomy Monograph 29. American Soc. of Agronomy, Madison, WI, USA, pp. 1–24.Google Scholar
  3. Campbell, T.A., G. Bao & Z.L. Xia, 1997. Agronomic evaluation of Medicago ruthenica collected in Inner Mongolia. Crop Sci. 37: 599–604.Google Scholar
  4. Lanyon, L.E. & W.K. Griffith, 1988. Nutrition and fertilizer use. In: Hanson, A.A., D.K. Barnes & R.R. Hill (Eds.), Alfalfa and Alfalfa Improvement. Agronomy Monograph 29. American Soc. of Agronomy, Madison, WI, USA, pp. 333–372.Google Scholar
  5. Lesins, K.A. & I. Lesins, 1979. Genus Medicago (Leguminosae) A Taxogenetic Study. W. Junk, The Hague.Google Scholar
  6. SAS Institute, 1989. SAS/STATTM Guide for Personal Computers, Version 6.1., 4th. ed. vol 2. SAS Inst., Cary, NC, USA.Google Scholar
  7. Sinskaya, E.N., 1961. Flora of Cultivated Plants of the USSR. XIII. Perennial Leguminous Plants. Part I. Medic, Sweet clover, Fenugreek. Israel Program for Scientific Translations, Jerusalem.Google Scholar
  8. Small, E. & M. Jomphe, 1989. A synopsis of the genus Medicago (Leguminosae). Can. J. Bot. 67: 3260–3294.Google Scholar

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • T. A. Campbell
    • 1
  • G. Bao
    • 2
  • Z. L. Xia
    • 3
  1. 1.Soybean and Alfalfa Research Laboratory, USDA/Agricultural Research Service, Beltsville Agricultural Research CenterBeltsvilleUSA
  2. 2.Grassland Research Institute, Chinese Academy of Agricultural SciencesInner MongoliaPRC
  3. 3.Institute of Soil and Fertilization, Chinese Academy of Agricultural SciencesBeijingPRC

Personalised recommendations