Research Article | OPEN ACCESS
A Morphological and Histological Characterization of Male Flower in Chestnut (Castanea) Cultivar 'Yanshanzaofeng'
Feng Zou, Su-Juan Guo, Huan Xiong, Peng Xie, Wen-Jun Lv and Guang-Hui Li
Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, 100083, Beijing, P.R. China
Advance Journal of Food Science and Technology 2013 9:1192-1197
Received: May 20, 2013 | Accepted: June 11, 2013 | Published: September 05, 2013
Abstract
Chinese chestnut (Castanea mollissima Blume.) is a widely distributed fruit tree and well known for its ecological and economic value. In order to evaluate obstacles to male reproductive in the C. mollissima, a morphological and histological characterization of male flower of chestnut cultivar ‘Yanshanzaofeng’ were examined by paraffin section technique and scanning electron microscopy. The results showed that male catkins with floral primordia were formed in the buds of one-year olds shoots in later April. Later, a protoderm, ground meristem and a procambium had differentiated in young anthers. Each young anther soon developed to four microsporangia. The anther wall layers developed completely by mid-May and consisted of one-cell-layered epidermis, one-cell-layered endothecium, two or three middle layers and one-cell-layered tapetum. The tapetum was of glandular type. Microspore mother cells underwent meiosis through simultaneous cytokinesis in later May and gave rise to tetrads of microspores, which were tetrahedrally arranged. Mature pollens contained two cells with three germ pores. Anthers were dehiscent and pollen grains shed by early June. Based our results, we did not find the abnormal male flower in the C. molissma cv ‘yanshanzaofeng’, indicating that male gametes were fertile and thus was considered as pollenizers.
Keywords:
Castanea mollissima Blume, male inflorescences, microgametogensis, microsporogenesis,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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