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为建立一套高效的木薯块根离体诱导技术方法,本研究以木薯主栽品种'新选048'组培苗为试验材料,通过研究不同培养方式,蔗糖、植物生长调节剂、活性炭浓度对木薯试管块根诱导的影响,筛选适宜木薯液体培养试管块根诱导的培养基配方,并对试管块根淀粉粒进行观察.结果表明:木薯液体诱导试管块根的最佳培养方式为滤纸桥液体培养.诱导试管块根发生的适宜培养基为MS+0.02 mg/L NAA+0.05 mg/L PP333+40 g/L蔗糖.在该配方下,组培苗生根率达86％,根系增粗明显,块根内有丰富的淀粉颗粒形成.在试验范围内,活性炭抑制木薯品种'新选048'试管块根的诱导.本研究可为高效诱导木薯试管块根提供技术帮助.“,”In order to establish an efficient method of cassava in vitro tuber induction, we took plantlets of the cassava main cultivar (cv. Xinxuan 048) as test materials, and explored the effects of different culture methods, sucrose, plant growth regulatorand activated carbon concentrations on in vitro tuber induction of cassava.Medium-formula for cassava in vitro tuberinduction of liquid culturewas screened out and we observed the in vitro tuber starch granulein roots. The results showed that the preferred liquid culture way for in vitro tuber induction in cassava was filter paper bridge liquid culture and propermedium for cassava in vitro tuber induction was MS basic medium, 0.02 mg/L NAA, 0.05 mg/L PP333 and 40 g/L sucrose. In this medium, the rooting rate of plantlets was86％with obvious thickening in roots and sufficient starch granules observed in tuber. Within the experimental range, activated carbon had serious inhibition on induction of in vitro tubers ofcassava cultivar'Xinxuan 048'. This study would provide technical help forinducing cassava tuberous roots in vitro efficiently.