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园艺学报 ›› 2002, Vol. 29 ›› Issue (1): 5-8.

• 果树 • 上一篇    下一篇

苹果紧凑型品种和矮化砧木内源激素的变化

王丽琴;唐 芳;赵 飞;束怀瑞
  

  1. (山东农业大学园艺学院, 泰安271018)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-02-25 发布日期:2002-02-25

Effect of Compact Mutants and Dwarfing Rootstocks on Endogenous HormoneContent of Apple

Wang Liqin , Tang Fang , Zhao Fei , and Shu Huairui
  

  1. ( Department of Horticulture , Shandong Agricultural University , Tai’an 271018)
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-02-25 Published:2002-02-25

摘要: 以不同矮化程度的苹果品种、砧木和嫁接植株为试材, 研究了春梢旺长期茎尖和春梢停长期
叶片的内源激素变化。结果表明, 与普通型品种相比, 紧凑型品种茎尖和叶片中的赤霉素(GA1+3) 含量显著降低而细胞分裂素(CTKs) 含量显著升高, 紧凑型品种的CTKs/ GA1+3约是普通型品种的4. 78~6. 24 倍。不同矮化程度的砧木间相比, 春梢停长期叶片中, M9 的IAA 含量比平邑甜茶降低了53. 7 %。以M26作中间砧, 显著降低了接穗叶片和基砧新根中的IAA 含量; 但以新红星作中间砧则影响较小。将M26中间砧与紧凑型品种组合, 与乔砧普通型植株相比, 春梢停长期叶片和新根中IAA 含量分别下降了46. 1 %和33. 3 %,CTKs/ GA1+3是其2. 8~3. 6 倍, 其变化幅度大于单一应用矮化砧、紧凑型品种的植株。因此, 紧凑型、矮化砧具有不同的激素调节机制, GA、CTK在紧凑型品种矮化中起重要作用, 而矮砧的矮化可能与IAA 密切相关。

关键词: 苹果, 紧凑型品种, 矮化砧, 内源激素

Abstract: Endogenous hormone regulation should be very important for apple dwarfing mechanism. Starking and its compact mutants , rootstocks in different warfing level were used to determine endogenous hormone content. The results were as follows : Compared to Red Delicious , its compact mutants had lower GA1+3 and higher CTKs. CTKs/ GA1+3 for dwarfing cultivars were 4. 78 to 6. 24 times of that for general cultivar. ABA , IAA content differed a little between compact and general apple cultivars. GA1+3, ABA and CTKs in shoot tips and leaves varied about 13 % - 20 % for normal and dwarfing rootstocks. However , IAA in M9 leaves was 53. 7 % less than that in normal rootstock during the rest period of shoot growth. Using M26 as inter rootstock , IAA in scion leaves and fine roots of basic rootstocks dropped 34. 6 % and 25. 6 %. But the plant with Starkrimson as inter rootstock did not have this effect . So GA was very important for compact varieties. It erformed directly on above ground. But Dwarfing mechanism for rootstocks maybe was closed to polar transition of IAA.

Key words: Apple, Compact mutants, Dwarf rootstocks, Endogenous hormone

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