摘要
在立地条件一致的情况下,研究了生长年龄相同条件下的抗寒矮化砧木对金红苹果一些生理特性的影响。结果表明,与普通基砧相比,金红叶片增厚21 0～36 5μm,栅海比明显提高,比叶重增加4 98～6 37mg·g-1,叶绿素含量增加0 249～0 431mg·g-1,Pn值增加1 81～10 86mg·dm-2·h-1,生长期叶片游离氨基酸含量和可溶性糖含量维持较高水平。秋季叶片的内源激素含量差异明显,IAA,GA3,ABA含量分别是对照的61 1%～83 4%,82 3%～87 3%和119 5%～164 5%。
The result slowed that the physiological characteristics between hardy dwarfing rootstocks and arborescent rootstocks had obvious difference in jinhong apple. Compared to arboreous tree,the leaf thickness,specific leaf weight,chlorophl content and phtosynthetic rate of dwarfing tree rose remarkably, which were respectively increased by about 21.0-36.5 μm , 4.98-6.37 mg·g^(-1),0.249-0.431 mg·g^(-1)and 1.81-10.86 mg·dm^(-2)·h^(-1), meanwhile, there was higher ratio of palisade mesophyll vs.spongy mesophyll on leaf. During the period of growth, there were more free amino acid and soluble sugar in leaf, maintaining the high content for dwarfing tree. With the coming of autumn, dwarfing tree had more ABA than normal arboreous tree's in leaf, and the content of GA_3 and IAA was lower.
出处
《华北农学报》
CSCD
北大核心
2003年第4期69-71,共3页
Acta Agriculturae Boreali-Sinica
基金
内蒙古自治区"九五"重点科技攻关项目(960106)
