Flower Development and Anatomy of Agapanthus praecox ssp. orientalis (Leighton) Leighton

doi:10.1016/S1671-2927(11)60129-6

Journal of Integrative Agriculture ›› 2011, Vol. 10 ›› Issue (9): 1365-1373.DOI: 10.1016/S1671-2927(11)60129-6

Flower Development and Anatomy of Agapanthus praecox ssp. orientalis (Leighton) Leighton

ZHANG Di, SHEN Xiao-hui , ZHUO Li-huan

1. Department of Ornamental Plant and Horticulture, College of Landscape Architecture, Northeast Forestry University
2. Department of Landscape Science and Engineering, School of Agriculture and Biology

收稿日期:2010-03-19 出版日期:2011-09-01 发布日期:2011-09-09
通讯作者: Correspondence ZHUO Li-huan, Professor, Mobile: 13002121390, Fax: +86-21-57813895, E-mail: zhuolihuan@263.net, zhuolh@shafc.edu.cn
基金资助:
This study enjoyed generous supports from the Research Fund for the Doctoral Program of Higher Education of China (200802250010), the National Natural Science Foundation of China (30571475), and the Key Project of the Shanghai Agricultural Committee (2010-6-2, 2006-4-9). We also thank Prof. Edward Langston, Shanghai Vocational and Technical College of Agriculture and Forestry, USA, for English revision of this manuscript.

Flower Development and Anatomy of Agapanthus praecox ssp. orientalis (Leighton) Leighton

ZHANG Di, SHEN Xiao-hui , ZHUO Li-huan

1. Department of Ornamental Plant and Horticulture, College of Landscape Architecture, Northeast Forestry University
2. Department of Landscape Science and Engineering, School of Agriculture and Biology

Received:2010-03-19 Online:2011-09-01 Published:2011-09-09
Contact: Correspondence ZHUO Li-huan, Professor, Mobile: 13002121390, Fax: +86-21-57813895, E-mail: zhuolihuan@263.net, zhuolh@shafc.edu.cn
Supported by:
This study enjoyed generous supports from the Research Fund for the Doctoral Program of Higher Education of China (200802250010), the National Natural Science Foundation of China (30571475), and the Key Project of the Shanghai Agricultural Committee (2010-6-2, 2006-4-9). We also thank Prof. Edward Langston, Shanghai Vocational and Technical College of Agriculture and Forestry, USA, for English revision of this manuscript.

摘要/Abstract

摘要： Floral buds of Agapanthus praecox ssp. orientalis were observed under dissecting and optical microscope to characterizefloral organs development and to study relationships between anther development and microsporogenesis. Floral organsdifferentiation was comprised of 6 distinct stages including nought differentiation, inflorescence bud differentiation,floret primordia differentiation, tepal primordia differentiation, stamen primordia differentiation, and pistil primordiadifferentiation. Six tepals differentiated almost simultaneously which cross arranged in space and appeared in hexagonaldistribution pattern. Six stamens were differentiated inside the tepals at the same time. Finally, 3 carpel primordiadifferentiated and formed syncarpous pistil. The whole process of floral bud differentiation took approximately 40 d withthe first 3 stages developing more slowly than the later 3 stages. Morphology and color of the anther underwent obviouschanges during the period between stamen primordia differentiation and anther maturation. Microspores also underwentsignificant development during this same interval. The relationship between the process of microsporogenesis andanther development has already been made clear by the squash technique.

关键词: Agapanthus praecox ssp. orientalis, floral organs, floral bud differentiation, microsporogenesis

Abstract: Floral buds of Agapanthus praecox ssp. orientalis were observed under dissecting and optical microscope to characterizefloral organs development and to study relationships between anther development and microsporogenesis. Floral organsdifferentiation was comprised of 6 distinct stages including nought differentiation, inflorescence bud differentiation,floret primordia differentiation, tepal primordia differentiation, stamen primordia differentiation, and pistil primordiadifferentiation. Six tepals differentiated almost simultaneously which cross arranged in space and appeared in hexagonaldistribution pattern. Six stamens were differentiated inside the tepals at the same time. Finally, 3 carpel primordiadifferentiated and formed syncarpous pistil. The whole process of floral bud differentiation took approximately 40 d withthe first 3 stages developing more slowly than the later 3 stages. Morphology and color of the anther underwent obviouschanges during the period between stamen primordia differentiation and anther maturation. Microspores also underwentsignificant development during this same interval. The relationship between the process of microsporogenesis andanther development has already been made clear by the squash technique.

Key words: Agapanthus praecox ssp. orientalis, floral organs, floral bud differentiation, microsporogenesis

ZHANG Di, SHEN Xiao-hui , ZHUO Li-huan. Flower Development and Anatomy of Agapanthus praecox ssp. orientalis (Leighton) Leighton[J]. Journal of Integrative Agriculture, 2011, 10(9): 1365-1373.

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Flower Development and Anatomy of Agapanthus praecox ssp. orientalis (Leighton) Leighton

Flower Development and Anatomy of Agapanthus praecox ssp. orientalis (Leighton) Leighton

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