ROLES OF COTYLEDONS AND AUXIN IN ADVENTITIOUS ROOT FORMATION OF HYPOCOTYL CUTTINGS OF LIGHT-GROWN CUCUMBER SEEDLINGS

被引：33

作者：

KATSUMI, M

CHIBA, Y

FUKUYAMA, M

机构：

[1] Biology Department, International Christian University, Mitaka, Tokyo, Osawa

来源：

PHYSIOLOGIA PLANTARUM | 1969年 / 22卷 / 05期

关键词：

D O I：

10.1111/j.1399-3054.1969.tb07457.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Adventitious root formation in encumber hypocotyl cuttings was studied. Root formation was quantitatively related to the amount of the cotyledons attached to the hypocotyl. Complete removal of the cotyledons diminished root formation entirely. Hut the removal of the apical bud had no effect. Treatment of the hypocotyl with triiodobenzoic acid resulted in the inhibition of root formation. On t he other hand, IAA promoted root formation. Promoting concentration of IAA was 1 mg/1 for the cuttings with intact cotyledons and 10 mg/1 for those with l/8th of the cotyledons. The first two or three days of treatment was most effective. The presence of auxin (IAA‐like. substance) in cucumber seedlings was demonstrated by paper chromatography and the pea straight test. It is concluded that the cotyledon is necessary for root formation in cucumber hypocotyl cuttings and that auxin is at least one of the factors supplied from the cotyledons. Copyright © 1969, Wiley Blackwell. All rights reserved

引用

页码：993 / &

共 15 条

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