6一BA对主干形香李侧枝萌发与生长的调控作用

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中图分类号：S662.3 文献标识码：A

Abstract：【Objective】 This study aimed to investigate the regulatory effect of 6- Benzylaminopurine （6-BA） on the sprouting of lateral branches in central leader-trained Prunus simoni ×P . armeniaca.【Methods】 Using three-year-old Prunus simonii ×P .armeniaca trees as experimental material，treatments with O，4Oo，6oo，and 800mg⋅L-1 6-BA were designed.Keyindicators，includingthenumberofsproutedlateralbranchesandthegrowthincrementofthecentralleaderand lateral branches，were measured. 【Results】 The results showed that treatments with 400 and 600mg⋅L-1 6—BA significantly promoted the sproutingof lateral branches，increasing itby 9.1 to12 times compared to theCK. In contrast，the 800mg ·L-1 treatment exhibiteda marginal efect.Inthetreatment groups，thegrowth inhibitionrate of thecentral leader reached 12.4% to 16.1% ，and the growth increment of lateral branches decreased by 24.8% to 36.2% . 【Conclusion】Comprehensive analysis revealed that 600mg⋅L-1 6-BA ，while ensuring an effective number of branches （12 per plant），achieved a balance between the growth of the central leader （79.1cm） and lateral branches ⟨34.8cm⟩ ，making it the ideal concentration for constructing the central leader form in Prunus simonii ×P . armeniaca.

Key words： Prunus salicina ×P . areniaca ; 6- benzylaminopine；chemical regulation；branching characteristic；tree architecture

杏李（Prunsdomesticaxarmeniaca）属于蔷薇科、李属乔木果树，是由美国引进以李（Prunus domestica）和杏（Prunus armeniaca）经过多代种间杂交培育的新型果树品种，其中李的基因占 75% ，杏的基因占 25%[1] 。（剩余4784字）