| Title |
Wheat genetic diversity trends during domestication and breeding
|
|---|---|
| Published in |
Theoretical and Applied Genetics, February 2005
|
| DOI | 10.1007/s00122-004-1881-8 |
| Pubmed ID | |
| Authors |
J. C. Reif, P. Zhang, S. Dreisigacker, M. L. Warburton, M. van Ginkel, D. Hoisington, M. Bohn, A. E. Melchinger |
| Abstract |
It has been claimed that plant breeding reduces genetic diversity in elite germplasm which could seriously jeopardize the continued ability to improve crops. The main objective of this study was to examine the loss of genetic diversity in spring bread wheat during (1) its domestication, (2) the change from traditional landrace cultivars (LCs) to modern breeding varieties, and (3) 50 years of international breeding. We studied 253 CIMMYT or CIMMYT-related modern wheat cultivars, LCs, and Triticum tauschii accessions, the D-genome donor of wheat, with 90 simple sequence repeat (SSR) markers dispersed across the wheat genome. A loss of genetic diversity was observed from T. tauschii to the LCs, and from the LCs to the elite breeding germplasm. Wheat's genetic diversity was narrowed from 1950 to 1989, but was enhanced from 1990 to 1997. Our results indicate that breeders averted the narrowing of the wheat germplasm base and subsequently increased the genetic diversity through the introgression of novel materials. The LCs and T. tauschii contain numerous unique alleles that were absent in modern spring bread wheat cultivars. Consequently, both the LCs and T. tauschii represent useful sources for broadening the genetic base of elite wheat breeding germplasm. |
Mendeley readers
The data shown below were compiled from readership statistics for 342 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 5 | 1% |
| United States | 3 | <1% |
| Mexico | 2 | <1% |
| Italy | 2 | <1% |
| India | 2 | <1% |
| Switzerland | 1 | <1% |
| Brazil | 1 | <1% |
| Netherlands | 1 | <1% |
| Colombia | 1 | <1% |
| Other | 3 | <1% |
| Unknown | 321 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 85 | 25% |
| Student > Ph. D. Student | 78 | 23% |
| Student > Master | 39 | 11% |
| Student > Bachelor | 28 | 8% |
| Student > Doctoral Student | 21 | 6% |
| Other | 46 | 13% |
| Unknown | 45 | 13% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 240 | 70% |
| Biochemistry, Genetics and Molecular Biology | 15 | 4% |
| Environmental Science | 6 | 2% |
| Computer Science | 5 | 1% |
| Engineering | 5 | 1% |
| Other | 16 | 5% |
| Unknown | 55 | 16% |
Attention Score in Context
This research output has an Altmetric Attention Score of 12. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 03 December 2012.
All research outputs
#2,829,353
of 23,794,258 outputs
Outputs from Theoretical and Applied Genetics
#277
of 3,565 outputs
Outputs of similar age
#8,472
of 144,546 outputs
Outputs of similar age from Theoretical and Applied Genetics
#1
of 25 outputs
Altmetric has tracked 23,794,258 research outputs across all sources so far. Compared to these this one has done well and is in the 88th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,565 research outputs from this source. They receive a mean Attention Score of 4.9. This one has done particularly well, scoring higher than 92% of its peers.
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We're also able to compare this research output to 25 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 96% of its contemporaries.