【摘要】 对荔枝种子自然萌发生长状态下胚根生长发育状况,及荔枝子苗胚根分别切去1/3、2/3和全切后用400mg/L、800mg/L、1200mg/L萘乙酸处理后进行观察。结果表明,荔枝种子在发芽期间,胚根长度、须根数、上胚轴粗度与长度呈直线形增长,几种处理都对根系生长发育有明显促进作用,以胚根切除2/3并用800mg/L萘乙酸处理对根系生长的促进效果最佳。更多还原

【Abstract】 The present study made an observation of the embryonic root growth status of litchi seedlings at the nature bourgeon growing condition and the embryonic roots of seedlings of which one third, two thirds and the whole were cut off and then treated with 400 mg/L, 800 mg/L, 1200 mg/L NAA. The result showed that during the period of bourgeon growing status of litchi, the embryonic root length, fibrous root counts, epicotyl width and length increase consistently. All treatments can significantly improve the roots growth. The best treatment is dripping with 800 mg/L NAA after two thirds of the embryonic roots are removed.更多还原