【摘要】 以二年生老山芹为试材，在其苗期给予不同时间的低温处理，分别为10、20 d和30 d,以未进行5℃低温处理的老山芹为对照，研究了不同的苗期低温处理时间对老山芹花芽分化进程及生长的影响，以期为延缓老山芹发育进程，增加营养生长时间，提高产量提供参考依据。结果表明：低温处理使老山芹花芽分化始期及花芽分化各阶段的时间均提前，且低温处理时间越长，效果越显著。内源激素含量和碳/氮代谢与老山芹花芽分化显著相关，其中赤霉素、脱落酸和可溶性糖含量与花芽分化呈正相关，生长素、玉米素、淀粉及可溶性蛋白质含量与老山芹花芽分化呈负相关。更多还原

【Abstract】 Two-year-old H.moellendorffii was used as the test material, and different periods of low-temperature treatments were given at its seedling stage 10,20 days and 30 days, respectively, with H.moellendorffii without low-temperature treatment at 5 °C as the control, and the effects of different time of seedling low temperature treatment on the process of bud differentiation and growth of the H.moellendorffii were investigated,in order to provide reference for slowing down the process of the development of the H.moellendorffii,increasing the time of nutrient growth,and improving the yield.The results showed that the low temperature treatment advanced the beginning of flower bud differentiation and all stages of flower bud differentiation in H.moellendorffii,and the longer the low temperature treatment time,the more significant the effect.The endogenous hormone content and carbon/nitrogen metabolism were significantly correlated with flower bud differentiation of H.moellendorffii,among which gibberellin,abscisic acid and soluble sugar content were positively correlated with flower bud differentiation,while growth hormone,zeatin,starch and soluble protein content were negatively correlated with flower bud differentiation of H.moellendorffii.更多还原