赤霉素及生根粉对芍药促成栽培的影响

Effects of Gibberellin and Rooting Powder on the Forcing Culture of Paeonia lactiflora'Da Fugui'

将3年生‘大富贵’芍药于2003年11月5日用不同浓度的赤霉素(GA3)和生根粉(ABT)喷淋根部后上盆,置背阴处直至2004年2月5日移入温室促成栽培,于4月2～22日先后开花.调查结果表明,GA3与ABT组合处理,(1)明显促进花芽集中萌发,其中GA3 150 mg/L的处理萌发期仅2～3 d,而对照为8 d;(2)明显促进开花,使开花期比对照提前约10 d,但开花分散,群体花期比对照延长约1倍;(3)提高成花率20%以上,其中单纯用GA3 150 mg/L处理时成花率最高(93%),但花径、株高、叶幅等却下降,切花质量均不如其它处理;(4)ABT促进新根形成与生长,对提高切花质量有一定作用,其中ABT 100 mg/L+GA3 100 mg/L处理效果较好.

Three-year-old plants of Paeonia lactiflora ＇ Da Fugui＇ were potted after being sprayed with the different concentration combinations of gibberellin （ GA3 ） and rooting power （ABT） solution on Nov. 5 of 2003, kept in the shade until forced in a greenhouse on Feb. 5, 2004, and flowered during Apr. 2 -22. The results showed that the combination of GA3 and ABT （ 1 ） Promoted the sprouting of flower buds uniformly, of which 150 mg/L GA3 made the plants finishing sprouting in 2 -3 days that was much less than 8 days in the control; （2） Significantly promoted flowering that was earlier about 10 days than in the control, but inflorescence of the population was prolonged one-fold with dispersed flowering; （3） Flowering rate was increased 20% and the highest was 93% in the treatment using 150 mg/L GA3 alone, but the quality of cut-flower was totally better in 100 mg/L GA3 ; （4） ABT promoted new-root formation and growth and had a positive effect in improving cut-flower quality. The treatment of combinated 100 mg/L GA3 and 100 mg/L ABT had better comprehensive result for forcing culture.