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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (31): 109-112.

所属专题： 生物技术

• 林学 园艺 园林 • 上一篇    下一篇

大花蕙兰花芽分化与激素关系的研究

秦建彬 魏翠华 余祖云 董明   

  • 收稿日期:2011-07-12 修回日期:2011-09-22 出版日期:2011-12-05 发布日期:2011-12-05

The Study of the Relationship between Cymbidium Flower Bud and Hormones

  • Received:2011-07-12 Revised:2011-09-22 Online:2011-12-05 Published:2011-12-05

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摘要：

为了给大花蕙兰花期调控提供理论依据，在大花蕙兰花芽分化前用不同浓度的GA3、IBA、NAA和PP333均匀喷洒大花蕙兰的叶片和假鳞茎，研究各处理对大花蕙兰花芽分化的影响，同时研究了在大花蕙兰花芽分化过程中假鳞茎内源激素含量的变化，结果表明：（1）对大花蕙兰的成品苗喷洒外源激素会影响其始花期，其中GA3和PP333促进大花蕙兰的花芽分化，使其提早开花，根据使用浓度的不同，提早开花的时间为2~12天；而不同浓度的NAA处理则抑制了大花蕙兰的花芽分化，使开花推迟了4~11天。（2）IBA处理能够明显的促进花箭的生长，PP333处理则抑制了花箭的生长；各处理对大花蕙兰的花期和单枝花朵数影响不明显。（3）在大花蕙兰花芽分化的过程中，假鳞茎中ZT和GA3含量都是先上升后下降；ABA则是缓慢的上升；IAA则表现为下降。ZT/IAA和ABA/IAA的上升有利于大花蕙兰花芽的分化。

关键词: 亚硝酸钠, 亚硝酸钠, 果蝇, 寿命, 生育力, Vc

Abstract:

The aim was to provide a theoretical basis for the flowering regulation of cymbidium. Before flower bud differentiation of cymbidium, GA3, IBA, NAA and PP333 with different concentrations sprayed leaves and pseudobulb. The effect of different treatments on flower bud differentiation of cymbidium was studied, and the endogenous hormone levels were also studied in pseudobulb. The results showed that: (1) the exogenous hormones may affect the flowering of cymbidium seedlings. GA3 and PP333 facilitated the bud differentiation of cymbidium. Depending on the different concentrations, earlier flowering time is from 2 to 12 days. The different concentrations of NAA treatment inhibited bud differentiation; the flowering delayed 4 to 11 days. (2) IBA treatment could significantly promote the growth of flower arrows; PP333 treatment inhibited the growth of the flower arrows. The treatments had no significant effects on Cymbidium flowers flowering and the number of single-branch. (3) In the process of bud differentiation of Cymbidium, ZT and GA3 content increased and then decreased; ABA had a slow rise; IAA decreased. The increase of ZT/IAA and ABA/IAA boosted bud differentiation.