Genetic differentiation among wild materials was obvious and gene differentiation coefficient of it was larger than of bred varieties and local materials.

沙打旺野生材料间遗传分化明显，其基因分化系数比育成品种间和地方材料间大。

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Except grain color and plant height, the diversity in spike, agronomic and quality characters of bred varieties has the trends to decrease, but to increase in diseases.

穗部性状、农艺性状和品质性状除粒色和株高外，选育品种变异性呈下降的趋势，而病害性状多表现出明显的增加。

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However, there is often only focus on a few good lines bred varieties, so that new varieties bred smaller and smaller differences in the morphological identification of the varieties more inaccurate.

然而目前人们往往只集中少数优良品系选育品种，使选育出的新品种差异越来越小，在形态学上对品种进行鉴定越来越不准确。

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And traditionally bred varieties have undergone a process more akin to natural selection than those which have merely had genes from other species inserted into them.

ECONOMIST: Genetically modified weaklings | The

Embrapa scientists also bred varieties of rhizobium, a bacterium that helps fix nitrogen in legumes and which works especially well in the soil of the cerrado, reducing the need for fertilisers.

ECONOMIST: Brazilian agriculture

More than 95% of the British blackcurrant crop comes from varieties bred at the institute.

BBC: Blackcurrants