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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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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