Axillary bud flowering after apical decapitation in Pharbitis in relation to photoinduction
作者:
Michiyuki Ono,
Kimiyo Sage Ono,
Koichiro Yamada,
Masaru Yasui,
Mitsuo Okazaki,
期刊:
Physiologia Plantarum
(WILEY Available online 1993)
卷期:
Volume 87,
issue 1
页码: 1-6
ISSN:0031-9317
年代: 1993
DOI:10.1111/j.1399-3054.1993.tb08782.x
出版商: Blackwell Publishing Ltd
关键词: Apical dominance;auxin;axillary bud;cytokinin;decapitation;floral stimulus;morning glory;Pharbitis nil;photoperiod;short day
数据来源: WILEY
摘要:
The flowering response of axillary buds of seedlings ofPharbitis nilChoisy, cv. Violet, was examined in relation to the timing of apical bud removal (plumule including the first leaf or second leaf) before or after a flower‐inductive 16‐h dark period. When the apical bud was removed well before the dark period, flower buds formed on the axillary shoots that subsequently developed, but when removed just before, or after, the dark period, different results were observed depending on the timing of the apical bud removal and plant age. In the case of 8‐day‐old seedlings, fewer flower buds formed on the axillary shoots developing from the cotyledonary node when plumules were removed 20 to 0 h before the dark period. When the apical bud was removed after the dark period, no flower buds formed. Using 14‐day‐old seedlings a similar reduction of flowering response was observed on the axillary shoots developing from the first leaf node when the apical bud was removed just after the dark period. To further elucidate the relationship between apical dominance and flowering, kinetin or IAA was applied to axillary buds or the cut site where the apical bud was located. Both chemicals influenced flowering, probably by modulating apical dominance which normally forces axillary buds to
点击下载:
PDF
(407KB)
返 回