Study on the Flower Morphology and Structure of Fargesia fungosa

doi:10.7525/j.issn.1673-5102.2019.06.001

Abstract

Abstract: Fargesia fungosa was an important economic bamboo species in the genera Fargeisa.The studies on the morphology and anatomical structure of their organs were lack.In this paper, the morphology and anatomical characteristics of F.fungosa flowers were observed and analyzed. The results showed that the flowers of F.fungosa belong tothemixed inflorescence and the base of spikelets had resting bud, besides several spikelets were wrapped by the "floral bud" was formed of singal leaf. The mean length of spikelets was 3.05±0.390 cm, containing 3-7 small flowers per spikelet. The mean length of florets was 1.85±0.167 cm, with 2 glumes,1 lemma and palea, 3 lodicules, 3 stamens, and 1 pistil. The young anther wall contained epidermis, endothecium, middle layer and tapetum from outside to inside. The matureanthers were splited longitudinally for pollen releasing.The mature pollen grainsweretwo- or three-celledand with 1 germination aperture. The ovary was unilocular, superior andand lateral membranous placenta with a anatropous ovule. The stigma of pistils has two feather-liking stigmas. The anther developed abnormally, resulting abortion phenomenonin the majority of anthers.

Key words: Fargesia fungosa, anther, ovary, anther wall

CLC Number:

S795.2

DENG Lin, HUANG Ling, CHU Cai-Hua, WANG Qian, ZHAN Hui, WANG Shu-Guang. Study on the Flower Morphology and Structure of Fargesia fungosa[J]. Bulletin of Botanical Research, 2019, 39(6): 801-807.

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