GROWTH HORMONES IN THE STYLES AND OVARIES OF TOBACCO RESPONSIBLE FOR FRUIT DEVELOPMENT
GROWTH HORMONES IN THE STYLES AND OVARIES OF TOBACCO RESPONSIBLE FOR FRUIT DEVELOPMENT
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DOI：
10.2307/2438869
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发表时间：
1956-01-01
影响因子：
3
通讯作者：
LUND, HA
中科院分区：
文献类型：
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作者：
LUND, HA
以马里兰州猛犸和迪克西Bright 102为试材，研究了授粉后花柱和子房激素含量的变化。花柱顶端的激素含量在最初的几个小时内迅速增加，然后在25小时后下降。花柱基部的激素含量以较慢的速度增加，并持续增加，直到授粉后48小时。授粉后50小时左右，子房激素含量增加。显微观察表明，这些激素水平的变化与花粉管的生长有关，表明花粉管直接或间接地控制激素的合成。所产生的生长激素被鉴定为吲哚乙酸。当花粉管进入花柱和子房时，这种化合物在这些组织中的含量增加。它的结论是吲哚乙酸，最初来自风格，后来出现在子房组织，是负责随后的卵巢生长成果实。
The changes in hormone content of styles and ovaries of Maryland Mammoth and Dixie Bright 102 tobacco flowers were followed subsequent to pollination. Hormone content of the apical half of the style increased rapidly during the first few hours and then dropped after 25 hours. Hormone content of the basal half of the style increased at a somewhat slower rate and continued to increase until 48 hours after pollination. Increases in hormone content of the ovary occurred at about 50 hours after pollination. Microscopic observation revealed that these changes in hormone level were correlated with the growth of pollen tubes suggesting a direct or indirect control of hormone synthesis by pollen tubes. The growth hormone being produced was identified as indoleacetic acid. This compound increased in amount in styles and ovaries when pollen tubes entered those tissues. It is concluded that indoleacetic acid, which initially comes from the style and later arises in ovary tissues, is responsible for subsequent growth of the ovary into a fruit.