Search National Agricultural Library Digital Collections

You searched for:

Subjects genetic variation Remove constraint genetic variation: genetic variation Subjects United States Remove constraint United States: United States
Displaying items 1 - 10 of 184 start over

1. A Comparison of U.S. and Chinese Sorghum Germplasm for Early Season Cold Tolerance

Description:
Includes references
Author:
Franks, C.D. , Burow, G.B. , Burke, J.J.
Subject:
Sorghum bicolor , grain sorghum , cold tolerance , germplasm , plant genetic resources , genetic resistance , genetic variation , geographical variation , cultivars , inbred lines , seed germination , seedling emergence , ambient temperature , length , shoots , dry matter accumulation , plant density , hybrids , United States , China
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2006

2. A first assessment of mitochondrial DNA variation and geographic distribution of haplotypes in Hessian fly (Diptera: Cecidomyiidae)

Description:
Includes references
Author:
Johnson, A.J. , Schemerhorn, B.J. , Shukle, R.H.
Subject:
Mayetiola destructor , insect pests , mitochondrial DNA , ribosomal DNA , nucleotide sequences , sequence alignment , sequence homology , haplotypes , genetic variation , genetic distance , phylogeny , population genetics , geographical distribution , zoogeography , biotypes , Wolbachia , United States , Canada , Mediterranean region , Asia , New Zealand
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2004

3. A second world-wide migration and population displacement of Phytophthora infestansl

Description:
Includes references
Author:
Spielman, L.J. , Drenth, A. , Davidse, L.C. , Sujkowski, L.J. , Gu, W. , Tooley, P.W. , Fry, W.E.
Subject:
Phytophthora infestans , plant pathogenic fungi , geographical distribution , allozymes , glucose-6-phosphate isomerase , cytosol non-specific dipeptidase , alleles , gene frequency , genetic variation , potatoes , Solanum tuberosum , Netherlands , Poland , British Isles , United States , Peru , Japan
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
1991

4. A Survey of Genetic Variation in Streptomyces Isolates Causing Potato Common Scab in the United States

Description:
Includes references
Author:
Wanner, L.A.
Subject:
Solanum tuberosum , potatoes , bacterial diseases of plants , Streptomyces , plant pathogenic bacteria , pathogenicity , disease incidence , geographical distribution , surveys , pathotypes , genetic markers , virulence , genetic variation , strain differences , United States
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2006

5. AFLP analysis of a worldwide collection of Didymella bryoniae

Description:
Includes references
Author:
Kothera, R.T. , Keinath, A.P. , Dean, R.A. , Farnham, M.W.
Subject:
blight , fungal diseases of plants , Didymella bryoniae , plant pathogenic fungi , amplified fragment length polymorphism , genetic variation , pathogenicity , Citrullus lanatus , Cucumis melo , United States , Australia , Canada , China , Greece , Israel , Sweden , Netherlands
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2003

6. AFLP comparisons among Claviceps africana isolates from the United States, Mexico, Africa, Australia, India, and Japan

Description:
Includes references
Author:
Tooley, P.W. , Goley, E.D. , Carras, M.M. , O'Neill, N.R.
Subject:
Claviceps , strains , strain differences , genetic markers , genetic techniques and protocols , geographical variation , genetic distance , genetic variation , amplified fragment length polymorphism , United States , Mexico , Africa , Australia , India , Japan
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

7. Agronomic performance of Flageolet beans in Spain.

Author:
Ron, A.M. de , Rodino, A.P. , Rodriguez, S. , Santalla, M.
Subject:
Phaseolus vulgaris , beans , crop production , crop yield , agronomic traits , germplasm evaluation , varieties , cultivars , genetic variation , Spain , Canada , United States
Physical description:
p. 113-114.
Collection:
Reports of Bean Improvement Cooperative and National Dry Bean Council Research Conference
Series:
Annual report.
Part Of:
Annual report. 2006 Mar., v. 49

8. Amplified fragment length polymorphism used for inter-and intraspecific differentiation of screwworms (Diptera:Calliphoridae)

Author:
L. Alamalakala , S. R. Skoda , J. E. Foster
Subject:
Cochliomyia hominivorax , Cochliomyia macellaria , amplified fragment length polymorphism , chromosome banding , genetic variation , mutants , pests , phylogeny , population genetics , screening , taxonomy , Caribbean , Central America , Mexico , South America , United States
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2009

9. Analysis of seed protein and oil from soybean northern and southern region uniform tests

Description:
Includes references
Author:
Yaklich, R.W. , Vinyard, B. , Camp, M. , Douglass, S.
Subject:
Glycine max , seeds , protein content , seed oils , crop yield , cultivars , data analysis , history , temporal variation , genetic variation , chemical constituents of plants , United States , Canada
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

10. Antimicrobial susceptibility patterns of Salmonella isolates from cattle in feedlots

Description:
Paper presented at the 2001 AVMA Animal Welfare Forum: Pain Management, October 14, 2001, Chicago, Ilinois.
Author:
Dargatz, D.A. , Fedorka-Cray, P.J. , Ladely, S.R. , Ferris, K.E. , Green, A.L. , Headrick, M.L.
Subject:
cattle , feedlots , feces , Salmonella , antimicrobial agents , drug resistance , genetic variation , medicated feeds , biological resistance , United States
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002