| 摘要: |
| 金冠苹果花芽大量开始分化时,成花短枝芽内氨基酸总量高于叶芽,成花短枝叶片(花叶)内含量低于叶芽短枝叶片(叶叶)。芽内以天冬氮酸含量最高,叶内以谷氮酸含量最高。芽和叶片内均以中性氨基酸所占比例为最大,酸性氨基酸其次,碱性氮基酸最小。在花芽大量开始分化时,花芽内三类氨基酸均高于叶芽,花叶内含量均低于叶叶,其中碱性氮基酸尤其明显。这时花芽内的天、谷、组、精氨酸占总量的%,两年结果比较稳定,叶芽只谷氨酸比较稳定。金冠苹果成花短枝叶片内氨基酸总量在成花前先上升,随后下降,芽内氨基酸总量相应提高,花芽内含量与花叶含量比值增大,表明叶片供应成花时所需大量氨基酸。此外三种碱性氨基酸,在花芽大量分化前10天内上升幅度大于叶芽,花叶内的含量下降幅度大于叶叶,这些变化也比酸性氨基酸显著,说明碱性氨基酸的动态值得进一步研究。 |
| 关键词: 叶芽 叶片 花芽分化期 动态变化 金冠苹果 氨基酸总量 氨基酸比值 精氨酸 碱性氨基酸 酸性氨基酸 |
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| Abstract: |
| In the years of 1980 and 1981,the levels and dynmic patterns of seventeen amino acids in buds and leaves on spurs of Golden Delicious apple(Malus pumila L.)were determined. At the time of mass flower bud differentiation of Golden Delicious apple,the total amount of seventeen amino acids in flower buds was higher than that in vegetative buds;their levels in leaves of reprodu- ctive spurs(LRS)were lower than that in leaves of vegetative spurs (LVS).Among the 17 amino acids in buds and leaves,the neutral amino... |
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