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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

Genetic Diversity and Population Structure of Caragana korshinskii Revealed by AFLP  [2007]

Wang, Z.; Gao, H.W.; Wu, Y.Q.; Han, J.G.;

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Caragana korshinskii Kom. is a perennial sandy grassland and desert deciduous shrub species, indigenous to and distributed in the northwest of China and Mongolia, and important in vegetation rehabilitation of widely degraded and degrading semiarid and arid regions because of its high ecological and economic values. To assess the genetic diversity and population structure of C. korshinskii, 10 natural populations from the Loess plateau and Inner Mongolia plateau in China were analyzed for amplified fragment length polymorphisms. Four primer combinations produced 358 bands across a total of 98 individuals. A high percentage of polymorphic loci was observed at species level (p = 93.9%). Multivariate analyses separated accessions into two regional groups corresponding to the Loess and Inner Mongolia plateaus. Based on analysis of molecular variance, 77.8% of the genetic variation of C. korshinskii was within population, 7% difference between regions, and 15.2% among collection sites within regions. An indirect estimate of the number of migrants per generation (Nm = 1.7) indicated that gene flow was high among populations of the species. A significant correlation (r = 0.58) between genetic and geographic distance was detected. Results of this study suggested that C. korshinskii has a high genetic variability and potential as a source of variation for breeding programs.
From the journal
Crop science
ISSN : 0011-183X

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
47
Issue:
4
Start Page:
1737
End Page:
1743
All titles:
"Genetic Diversity and Population Structure of Caragana korshinskii Revealed by AFLP"@eng
Other:
"Includes references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
47
Issue:
4
Start Page:
1737
End Page:
1743
All titles:
"Genetic Diversity and Population Structure of Caragana korshinskii Revealed by AFLP"@eng
Other:
"Includes references"