Methods
Year tested: //1968 Comment: The data in this study was recorded by the staff of the Plant Genetic Resources Unit in Geneva, New York. For additional information, contact Stephanie Greene (Stephanie.Greene@ars.usda.gov)
Year tested: //1971 Comment: The data in this study was recorded by the staff of the Plant Genetic Resources Unit in Geneva, New York. For additional information, contact Stephanie Greene (Stephanie.Greene@ars.usda.gov)
Year tested: //1972 Comment: The data in this study was recorded by the staff of the Plant Genetic Resources Unit in Geneva, New York. For additional information, contact Stephanie Greene (Stephanie.Greene@ars.usda.gov)
Year tested: //1974 Comment: The data in this study was recorded by the staff of the Plant Genetic Resources Unit in Geneva, New York. For additional information, contact Stephanie Greene (Stephanie.Greene@ars.usda.gov)
Year tested: //1976 Comment: The data in this study was recorded by the staff of the Plant Genetic Resources Unit in Geneva, New York. For additional information, contact Stephanie Greene (Stephanie.Greene@ars.usda.gov)
Year tested: //1981 Comment: The data in this study was recorded by the staff of the Plant Genetic Resources Unit in Geneva, New York. For additional information, contact Stephanie Greene (Stephanie.Greene@ars.usda.gov)
Study Name: Agronomic evaluation of Trifolium species. Experiment Type: Field field Study Year: 1989 Exp. Design: RCBD Exp. Location: Lexington Comment: Agronomic evaluation of 48 Trifolium accessions for vigor, growth habit, leaf mark, flower color, seeds per head.
Study Name: Reaction of US sub. clover to Clover Yellow Vein Virus. Experiment Type: Greenhouse greenhouse Study Year: 1993 Comment: Response of the US Subterranean Clover collection to Clover Yellow Vein Virus.
Accessions which comprise the core collection of berseem clover (Trifolium alexandrinum) as determined by the Clover and Special Purpose Legume CGC. Accessions selected at random from each group. Stratified by country of origin, minimum of one accession from each country. Updated May 10, 1991.
Accessions which comprise the core collection of persian clover (Trifolium resupinatum) as determined by the Clover and Special Purpose Legume CGC. Accessions selected at random from each group. Stratified by country of origin, minimum of one accession from each country. Updated May 10, 1991.
Accessions which comprise the core collection of subterranean clover (Trifolium subterraneum) as determined by the Clover and Special Purpose Legume CGC. Accessions selected at random from each group. Stratified by country of origin, minimum of one accession from each country. Updated January 1992 to include subsp. brachycalycinum.
Contains data taken on resistance to cylindrocladium. Experiment ended in 1991. Resistance to Cylindrocladium was recorded on 11 accessions.
Hard Seed Production of Subterranean Clover. Field experiment; design random complete block. Experiment planted 10/1990 and ended 06/1991. Hard seed production of subterranean clover was evaluated using 3 replicates of 1.8 meter single row plots. Seed was inoculated with WR (nitragin) type inoculate. Detailed methods are described in crop Sci. 28:998-1000. Checks used were Mt. Barker and Meteora.
Contains data on the content of three isoflavones. Greenhouse experiment. Experiment ended in 1988. Trifolium subterraneum and T. hirtum were evaluated for content (g/kg) of three isoflavones (Genistein, Biochanin A, and formononetin).
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Incolated with 10 egg per cm3(1500 per cone) of Meloidogyne arenaria race 1 at three weeks after tranplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses. LITERATURE CITATIONS: Quesenberry, K.H., D.D. Baltensperger and R.A. Dunn. 1986. Screening Trifolium spp. for response to Meloidogyne spp. Crop Sci. 26:61-64.
Comment: Data was recorded on 4 species of nematodes (arenaria, hapla, incognita and javanica) in both the gall and egg stages on annual clovers.
Contains data taken at the Southern Regional PI Station. The data in this study was recorded by the staff of the Southern Regional Plant Introduction Station in Griffin, GA. For additional information, contact Steve Kresovich at (404) 228-7255.
1999 clover increase in Griffin.
1996 clover increase in Griffin.
1997 clover increase in Griffin at Westbrook farm and Experiment greenhouse.
1998 clover increase in Griffin at Westbrook farm and from screenhouse planted in 1997 and harvested in 1998.
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne arenaria race 1 at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses.
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne arenaria race 1 at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses.
2012 cross-pollinated regeneration at Byron
2006 fall cross-pollinated regeneration at Byron
2007 fall cross-pollinated regeneration at Byron
2008 fall cross-pollinated regeneration at Byron
2009 fall cross-pollinated regeneration at Byron
2010 fall cross-pollinated regeneration at Byron
2005 fall self-pollinating regeneration at Byron
2006 fall self-pollinated regeneration at Byron
2007 fall self-pollinated regeneration at Byron
2008 fall self-pollinated regeneration at Byron
2009 fall self-pollinated regeneration at Byron
2010 fall self-pollinated regeneraton at Byron
2011 fall self-pollinated regeneraton at Byron
2012 self-pollinated regeneration at Byron
2013 self-pollinated regeneration at Byron
Cross-pollinated clover increase in Griffin at Westbrook farm. Planted in fall 1998 and harvested in 1999.
2000 Ethiopian clover increased in the greenhouse in Griffin
2003 fall clover increase in greenhouse/coldframe in Griffin
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne hapla at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses.
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne hapla at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses.
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne incognita race 3 at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses.
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne incognita race 3 at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses.
Resistant check: Koala; Susceptible check: Karridale. Field experiment. Experiment ended in 1989. Resistance to high pH induced iron chlorosis was recorded on Trifolium subterraneum accessions using two soil types (Parrita and Denhawken. A weighted mean of the two soils means was entered into GRIN. Additional details on the methods used can be found in Crop Sci. 29:949-951.
Plant response of crimson clover (Trifolium incarnatum) to high pH was measured by iron-deficiency chlorosis. Soil - Parrita SCL pH 7.9 DTPA extractable Fe 2.51 (low) evaluated an unequal number of seedlings, grown in Cone-Tainers using Wei et al. (1994) modification of the Gildersleeve and Ocumpaugh procedure. Main modification was to refrigerate the water used to saturate the soil. Koala and Karridale subclover were used as resistant and susceptible checks, respectively.
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne javanica at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root systems evaluated for galls and egg masses.
Seedling plants transplanted to 150 cm3. Conetainers filled with fine sand topsoil. Inoculated with 10 egg per cm3(1500 per cone) of Meloidogyne javanica at three weeks after transplanting. Uprooted at 6-8 weeks after inoculation. Root system evaluated for galls and egg masses.
2007 fall cross-pollinated regeneration at Byron of German Clover from Mississippi Collection
2011 fall regeneration of NSSL only accessions with adequate quantities and low germ
Subterranean clover (
Trifolium subterraneum L. and
T. subterranean subsp.
brachycalycinum L.) accessions originating from the Mediterranean area were evaluated in the greenhouse for powdery mildew (
Erysiphe polygoni (DC.)) resistance in 2000 and 2002. Sixty-six accessions from Australia, France, Greece, Morocco, Portugal, Spain, and the United States were highly resistant to powdery mildew. The evaluation of subterranean clover for resistance to powdery mildew was a randomized complete block with three replications.
View a summary of results of the evaluation of subclover germplasm in an Acrobat file (pdf) or as an HTML webpage.
Self-pollinated clover increase in Griffin at Westbrook farm. Planted in fall 1998 and harvested in 1999.
2005 summer regeneration at Byron and Westbrook (in Griffin)
1999 clover increase at Westbrook in Griffin.
2002 clover increase at Westbrook in Griffin.
2002 fall clover increase at Westbrook in Griffin.
2003 spring persian clover increase at Westbrook in Griffin.
2004 spring clover increase at Westbrook in Griffin
2004 uncaged spring clover increase at Westbrook in Griffin
Annual clover hundred seed weights for available inventories updated semi-annually to incorporate new data on current regenerations
2014 - Clover Cross-Pollinated Regeneration at Byron, GA
Clover - 2014 Self-Pollinated Regeneration at Byron, Georgia