| 摘要: |
| 小麦开花前的穗中存在三种蔗糖降解酶:转化酶(主要是可溶性酸性转化酶,SAI)、蔗糖合成酶(SS)和蔗糖-蔗糖果糖基转移酶(SST)。在小花器官中 SAI 活性最高,在穗轴和颖片中,SST 活性最高,而 SS 活性仅仅在小花中可测。一穗上不同部位小穗的酶活性不同,中部小穗的酶(SST,SAI,SS)活性明显高于上部和下部小穗。讨论了穗器官蔗糖降解酶活性与糖分代谢及小穗结实性的关系。 |
| 关键词: 小麦穗 蔗糖降解酶 |
| DOI： |
| 投稿时间：1994-10-25 |
| 基金项目: |
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| Distributions and Activities of Sucrose-Cleaving Enzymes in Young Spike of Wheat |
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| Abstract: |
| Three enzymes[invertase,sucrose synthase(SS)and sucrose:sucrose fructosyl trans- ferase(SST)]which were asociated with sucrose cleavage appeared in young spike of wheat before anthe- sis.SST activity and Soluble acide invertase(SAI)were greatest respectively in the rachis and in the florets of spike,however,SS ativity can be measured only in the florets,The activity levels of these en- zymes were different between different spikelets of the same spike,and it was showed that the middle spikelets had higher s... |
| Key words: wheat spike sucrose-cleaving enzymes |
