温度高不利于色稻颖果着色。

High temperature was unfavorable to accumulate anthocyanin.

颖果棕褐色，长椭圆形，长约3毫米。

Grain brown, long elliptic, ca. 3 mm long.

颖果：一种不开裂的干果，是禾本科植物特有的果实类型。与瘦果相似，不同点在于颖果的果皮和种皮紧密愈合不易分离。

Caryopsis ( grain ) ( pl. caryopses ) a dry indehiscent fruit, typical of the grasses. it is similar to an achene except that the ovary wall is fused with the seed coat.

富含胆碱的残留花药、雌蕊及早期颖果是禾谷镰孢菌的主要初侵染源；

Besides anthers at anthesis, pistils and young caryopses are rich in choline and are the main sites of the initial infection.

䅟属植物的颖果腹面形状、纹饰、表面小孔直径及平均密度等性状，可为种类鉴定及种间关系分析提供有价值的证据。

It can be concluded that caryopsis ventral shape, sculpture, and foveola are very useful characteristics for the identification of species and the inference of interspecific relationships in Eleusine.