Morphological and cellular characterization of rhizome development 
of Phyllostachys edulis ‘Pachyloen'and Phyllostachys edulis

doi:10.3969/j.issn.1000-2006.201611021

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2018, Vol. 42 ›› Issue (02): 197-201.doi: 10.3969/j.issn.1000-2006.201611021

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Morphological and cellular characterization of rhizome development of Phyllostachys edulis ‘Pachyloen'and Phyllostachys edulis

WEI Qiang¹, GAO Zhipeng¹, CHEN Ming¹, CAO Junjie¹, GUO Lin¹, YU Fen³, YANG Guangyao³, DING Yulong^1*

1. Co-Innovation Center for Sustainable Forestry in Southern China, Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, China; 2. Jiangxi Provincial Key Laboratory for Bamboo Germplasm Resources and Utilization, Jiangxi Agriculture University, Nanchang 330045, China

Online:2018-04-12 Published:2018-04-12

Abstract

Abstract: 【Objective】The present study aims to disclose the cellular mechanism underlying the thick wall phenotype with small pith cavity of the Phyllostachys edulis ‘Pachyloen' rhizome. 【Method】A paraffin section observation was used to compare the cell structure. Gielis' superellipse equation was used to precisely analyze the morphology of the shoot apical meristem(SAM)of the thick wall variant and wild-type(WT)moso plants.【Results】The results revealed that the apical meristem of the thick wall variant, which is thinner and longer with a larger area and more cells, does not differentiate into any visible pith tissues. However, it does differentiate into more vascular tissues. Outlines of the apical meristems of both the thick wall variant and WT moso plants could be precisely described by the superellipse formula. However, the angle between the horizontal axis and the major axis of the thick wall variant was near 90 degrees, whereas that of the WT moso was about 45 degrees. Additionally, the SAM cell morphology of the thick wall variant was more regular with a denser protoplasm than that of the WT moso.【Conclusion】Our results indicated that the abnormal structure of the SAM of the thick wall variant moso possibly results in its solid rhizome internode phenotype.

Key words: Keywords:moso, thick wall moso, shoot apical meristem, rhizome, vascular tissue formation, pith tissue

CLC Number:

S718.3
S795

WEI Qiang, GAO Zhipeng, CHEN Ming, CAO Junjie, GUO Lin, YU Fen, YANG Guangyao, DING Yulong. Morphological and cellular characterization of rhizome development of Phyllostachys edulis ‘Pachyloen'and Phyllostachys edulis[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2018, 42(02): 197-201.

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Morphological and cellular characterization of rhizome development of Phyllostachys edulis ‘Pachyloen'and Phyllostachys edulis

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