FLORAL INITIATION AND DEVELOPMENT OF TRICYRTIS HYBRIDA

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URI http://shark.lib.kagawa-u.ac.jp/kuir/metadata/1455
Title
FLORAL INITIATION AND DEVELOPMENT OF TRICYRTIS HYBRIDA
Title Alternative
ホトトギスの花芽分化と発達
File
Description

Morphological development of inflorescence and floral organs in Tricyrtis hybrida were determined using scanning electron microscopy (SEM). Inflorescence of Tricyrtis was a heteromorphous compound inflorescence; the main axis was indeterminate and secondary axes were determinate. The apex of the main axis produced primary bracts continuously, but the apex of each axil of the primary bracts produced a secondary bract and terminated in the first flower. The secondary bract subtended an axil that produced a bract and terminated in the second flower. Tertiary and higher order bracts and flowers appeared similarly, leading to the formation of a cincinnus. The flowers consisted of three outer and inner perianths, six stamens, and a pistil, as in other Liliaceae plants. The basal part of outer perianths swelled and developed to spurs in later development.

ホトトギス(Tricyrtis hybrida)の花芽分化・発達過程を走査型電子顕微鏡で明らかにした. ホトトギスの花序は, 主軸は無限成長型で各腋芽は有限花序型に発達する異型複合花序であった. 花序の形成は, 苞葉の腋芽の肥大に始まり, その後も主軸の茎頂は苞葉を分化し続けた. 花序主軸の各腋芽の茎頂は, 一枚の二次苞葉を形成して頂部が花になった. その二次苞葉の腋芽は再び一枚の苞葉を形成して頂部が花になり, その後も同様の分化方式をつづけて, 3-5個の花からなるサソリ型花序となった. 各花は3つの外花被, 内花被, 6つの雄ずいと1つの雌ずいからなり, 花被の下部は短い距を発達させた.

Author
著者 Fukai Seiichi
著者(ヨミ) フカイ セイイチ
著者(別表記) 深井 誠一
Publication Title
香川大学農学部学術報告
Volume
61
Start Page
21
End Page
26
Publisher
香川大学農学部
Published Date
20090225
ISSN
0368-5128
NCID
AN00038339
Resource Type
Departmental Bulletin Paper
Language
eng
Text Version
publisher
Set
香川大学
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