About 2% of the same year self-crossing crucian carp are hermaphroditism.

从方正银鲫自交繁殖的当年鱼群体中发现约有2％左右的雌雄同体。

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Heredity research of aubergine leaf character in Brassica napus was carried out by using the methods of crossing, self-crossing and backcrossing.

采用杂交、自交、回交方法对甘蓝型紫红叶色油菜进行叶色遗传研究。

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Especially, what self-crossing is highly no appetency makes easy lose of good single genotype, which propagatation and conservation of good varieties breeding brings great difficulty.

特别是自交高度不亲和性，往往使得优良单株基因型很容易丢失，给优良品种选育材料的繁殖和保存带来了极大困难。

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The first task, which previous research has shown to deplete self-control, was tediously crossing out all the Es on a page from a statistics book.

FORBES: Need a Self-Control Boost? Gargle with Sugar Water!