Journal
JOURNAL OF SYSTEMATICS AND EVOLUTION
Volume 56, Issue 1, Pages 14-24Publisher
WILEY
DOI: 10.1111/jse.12263
Keywords
anatomy; endogenous hormones; Gnetum parvifolium; microstructure; phyletic evolution; sexual system
Categories
Funding
- National Nature Reserve Authority of Hainan Diaoluo Mountain
- special fund of the Research Institute of Forestry, Chinese Academy of Forestry [RIF2013-12]
- 948 program of the State Forestry Administration of China [2012-4-43]
Ask authors/readers for more resources
The study of the sexual systems of plants is very important for understanding their evolutionary process. Gnetum is a pivotal species in comprehending the seed plant phylogeny. However, the sexual systems of this genus are not fully understood. To investigate the sexual system of Gnetum, the anatomical structure, microstructure, and endogenous hormones were investigated from the differentiation of flower buds to fertilization in the floral organs of female and male of G. parvifolium (Warb.) C.Y. Cheng, widely distributed in the north of China. After 2 years of field investigations, the staminate strobili were observed on female plants for the first time and the abortive ovules were also found on male plants. In addition, high levels of gibberellin A(3) and zeatin riboside led to masculinization, whereas a high level of indole-3-acetic acid favored feminization. A comprehensive analysis of the results indicates that G. parvifolium may not be completely dioecious on morphology, but female and male plants can only perform their own gender function, which would provide a better understanding of the diversity of sexual systems in Gnetum, and reproductive structures of seed plants.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available