https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2012, Vol. 39 ›› Issue (5): 837-844.

• 果树 • 上一篇    下一篇

喷施6-BA对‘天红2号’苹果苗腋芽萌发及其内源激素的影响

孟云, 马少锋, 邵建柱, 孙建设, 马宝焜, 王红宁   

  1. (河北农业大学园艺学院,河北保定 071001)
  • 出版日期:2012-05-25 发布日期:2012-05-25

Effects of Spraying 6-BA on Axillary Bud Growth and the Dynamic Changes of Endogenous Hormones in‘Tianhong 2’Fuji Nursery Apple Trees

MENG  Yun, MA  Shao-Feng, SHAO  Jian-Zhu, SUN  Jian-She, MA  Bao-Kun, WANG  Hong-Ning   

  1. (Colledge of Horticulture,Agicultural University of Hebei,Baoding,Hebei 071001,China)
  • Online:2012-05-25 Published:2012-05-25

摘要: 以当年春季单芽腹接‘天红2号’富士矮化中间砧苹果苗为试材,对6-BA处理后幼苗腋芽萌发生长和萌发过程中内源激素含量的变化和平衡关系进行了研究。结果表明:喷施300 mg · L-1 6-BA水溶液后,前期单芽质量增长缓慢,4 d后快速增长,5 d时腋芽明显膨大,7 d时萌发,9 ~ 10 d长约1 cm,在处理时苗木顶端以下5 ~ 45 cm平均萌发15个腋芽,萌发株率高达100%。6-BA处理后腋芽内IAA含量初期(大约2 d)明显降低,随后开始缓慢升高,ZRs和GAs含量迅速升高,6 ~ 8 d后二者均开始降低;枝皮内IAA含量显著持续降低,ZRs含量略有降低,6 d后二者均开始缓慢升高,GAs含量变化趋势相反,先升后降;腋芽和枝皮内ABA含量均降低。6-BA处理后打破了顶端优势,枝皮内IAA降低有利于腋芽内IAA向主茎输出,同期调动枝皮中ZRs向腋芽运输,腋芽内ZRs升高,腋芽激活萌发,芽内开始合成大量IAA。随着6-BA作用减弱,4种内源激素含量变化曲线大都在6 ~ 8 d开始回落,同时腋芽萌发,内源激素又开始达到新的平衡。

Abstract: The effects of 6-BA on promoting axillary bud germination and growth of new shoots and the dynamic changes of endogenous hormones were studied with‘Tianhong 2’Fuji cultivars grafted on dwarfing inter-rootstocks in the spring of that year. The results showed that the early growth of single bud weight was slow,and rapid after 4 days treated by 300 mg · L-1 6-BA. The axillary buds treated by 6-BA apparently expanded,germinated,and growed to 1 cm long on the fifth day,the seventh day,and the ninth to tenth day respectively. Approximate 15 buds germinated from 5 to 45 cm down the shoot tip at treatment on average,and the percent of nursery trees with germinated buds was 100%. On the one hand,IAA content decreased obviously at the initial stage of treatment(approximate 2 days)and then rised slowly, meanwhile,the content of ZRsand GAs rised rapidly,however,both the two decreased 6 to 8 days later in the bud. On the other hand,IAA content continued to reduce significantly and ZRs content decreased slightly after treatment,both the content of IAA and ZRs rised 6 days later,the trend of GAs content was oposite in the stem. Besides,ABA content decreased both in the bud and stem. Thus,spraying 6-BA could make ZRs transport to axillary bud from local stem,inhibit IAA to transport to the main stem from shoot tip,promote the IAA in the axillary bud to transport to the main stem,and then the axillary bud germinated. As the effect of 6-BA decreased,the curves of 4 hormones content began to fall back on the sixth day or the eighth day,meanwhile,hormones started to reach new balance with the germination and growth of axillary buds.