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种薯萌发的芽条数不随萌芽时间的延长而增多,但在高温(22～28℃)下萌芽和种薯尚未完全通过休眠时催芽,会使萌芽数显著减少。品种、光照、温度、萌芽时间、赤霉素浸种等因素条件的不同,对芽条伸长速率和芽生长锥分化程度和速率有显著影响、而对芽条节间数、生根节数、顶芽萌发数的影响不明显。芽条根原基只有在黑暗潮湿的条件下才能仲长,以芽条基部1～3节的根系发生最早、最多、早长。芽生长锥分化程度与芽条其它各器官的发育程度呈显著正相关,它是衡量芽条发育水平的最具代表指标。
The number of seed germination did not increase with the germination time, but germination and seed germination did not completely pass through dormancy under high temperature (22 ~ 28 ℃), the number of germination would be significantly reduced. Variety, light, temperature, germination time, soaking conditions of gibberellin and other factors, the bud elongation rate and bud growth cone differentiation degree and rate have a significant impact on the number of buds internodes, rooting number, top The effect of bud germination number is not obvious. Bud root primordium only in dark and humid conditions to Zhong long, bud root section 1 to 3 of the earliest, most, early growth. The differentiation degree of shoot growth cone was positively correlated with the development degree of other organs of buds. It is the most representative index to measure the developmental level of buds.