论文部分内容阅读
以郁金香‘红色印象’的种球为试验材料,在栽植前后分别用GA3和6-BA溶液进行处理,在栽植期、出芽期、现蕾期、盛花期以及衰败期采集不同处理下鳞茎的鳞片和茎盘,分别测定其内源激素GA3、IAA和ABA的含量。结果显示:种植前用GA3溶液浸泡过的种球在栽植期内源GA3含量明显升高,ABA含量则低于对照,而低浓度ABA有利于激活郁金香的生长发育进程。在生长期外施GA3和6-BA后,5℃处理、常温以及经过GA3浸泡过的常温种球在现蕾期GA3和IAA含量都明显高于对照,说明外施生长调节剂对内源GA3和IAA含量具有一定的影响。从ABA/GA3比值看,由于GA3含量相对稳定,因此该比值变化与ABA含量变化基本一致;鳞片中ABA/IAA比值随着郁金香的生长发育总体上呈下降的趋势,说明激素平衡对郁金香的生长发育起着重要的调节作用。
Tulip ’red impression’ bulbs were used as experimental materials, GA3 and 6-BA solutions were taken before and after planting, and the scales of bulbs under different treatments were collected at planting, budding, budding, flowering and decaying periods And stem disks were determined the content of endogenous hormones GA3, IAA and ABA. The results showed that the content of GA3 in the seedlings soaked in GA3 solution before planting was significantly higher than that in the control while the ABA content was lower than that in the control. The low concentration of ABA was beneficial to activate the growth and development of tulip. After GA3 and 6-BA were applied at the growth stage, the content of GA3 and IAA at 5 ℃, normal temperature and GA3-immersed bulbs at normal temperature were significantly higher than those at the budding stage, indicating that the exogenous growth regulators had no effect on endogenous GA3 And IAA content have a certain impact. From the aspect of ABA / GA3 ratio, the change of ABA content was basically the same as that of ABA content due to the relatively stable content of GA3. The ABA / IAA ratio in scales showed a general trend of decline with the growth of tulip, indicating that hormone balance had the effect on the growth of tulip Development plays an important regulatory role.