Genetic diversity trends in twentieth century crop cultivars: a meta analysis.
Genetic diversity trends in twentieth century crop cultivars: a meta analysis.
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DOI：
10.1007/s00122-009-1252-6
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发表时间：
2010-04
影响因子：
5.4
通讯作者：
Visser, Bert
中科院分区：
文献类型：
--
作者：
van de Wouw, Mark;van Hintum, Theo;Kik, Chris;van Treuren, Rob;Visser, Bert
近年来，利用各种分子生物学技术研究世纪以来农作物品种遗传多样性变化趋势的论文越来越多。从这些研究中没有发现多样性方面的明确的一般趋势。Meta分析技术，使用适合与多样性指数使用的研究权重，应用于分析这些研究。在Meta分析中，使用了44篇已发表的论文，讨论了世纪8种不同大田作物（小麦是最具代表性的）的已发布作物品种的多样性趋势。Meta分析表明，总体而言，从长远来看，植物育种者发布的作物品种的区域多样性没有实质性减少。与1950年代的多样性相比，1960年代的多样性显著减少了6%。有迹象表明，在20世纪60年代和70年代之后，育种者已经能够再次增加所释放品种的多样性。因此，无法观察到育种者所释放的品种的遗传基础逐渐缩小。对小麦和其他大田作物组的单独分析以及对区域的单独分析都显示出类似的多样性趋势。
In recent years, an increasing number of papers has been published on the genetic diversity trends in crop cultivars released in the last century using a variety of molecular techniques. No clear general trends in diversity have emerged from these studies. Meta analytical techniques, using a study weight adapted for use with diversity indices, were applied to analyze these studies. In the meta analysis, 44 published papers were used, addressing diversity trends in released crop varieties in the twentieth century for eight different field crops, wheat being the most represented. The meta analysis demonstrated that overall in the long run no substantial reduction in the regional diversity of crop varieties released by plant breeders has taken place. A significant reduction of 6% in diversity in the 1960s as compared with the diversity in the 1950s was observed. Indications are that after the 1960s and 1970s breeders have been able to again increase the diversity in released varieties. Thus, a gradual narrowing of the genetic base of the varieties released by breeders could not be observed. Separate analyses for wheat and the group of other field crops and separate analyses on the basis of regions all showed similar trends in diversity.
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影响因子：
2.3
作者：
Condon, Federico;Gustus, Charles;Smith, Kevin P.
通讯作者：
Smith, Kevin P.
影响因子：
3.1
作者：
ANDERSON, JA;CHURCHILL, GA;SORRELLS, ME
通讯作者：
SORRELLS, ME
DOI：
10.1079/pgr2003021
发表时间：
2003-01-01
期刊：
Plant Genetic Resources: Characterization and Utilization
影响因子：
--
作者：
Brantestam, A. K.;Bothmer, R. von;von Bothmer, R.
通讯作者：
von Bothmer, R.
影响因子：
2.6
作者：
Excoffier, Laurent;Laval, Guillaume;Schneider, Stefan
通讯作者：
Schneider, Stefan
影响因子：
2.7
作者：
Brantestam, AK;von Bothmer, R;Weibull, J
通讯作者：
Weibull, J