Coleoptile a sheathlike structure that protects the developing plumule in grasses .
胚芽鞘:用来保护发育的胚芽的鞘状的结构。
The results show that salt tolerance of four test materials are improved , and the germination rate , coleoptile length and main root length of four materials are inhibited but the degree of inhibition is significantly less than " hua 30 " .