%0 Journal Article
%A HUANG Ping;SHEN Jun-Hui;GU Dong-Ya;LÜMing-Jin;YE Yong-Zhong*
%T Anatomical Structures of Vegetative Organs and Ecological Adaptation of Gaura parviflora
%D 2009
%R 10.7525/j.issn.1673-5102.2009.04.003
%J Bulletin of Botanical Research
%P 397-401
%V 29
%N 4
%X Gaura parviflora is one of the invasive plants, the anatomical structure of its vegetative organs was studied by the methods of paraffin section. The results showed that: In the secondary structure of the roots of G. parviflora,there was a larger proportion of secondary xylem, about two thirds of the entire cross section, the number of vessels averaged 138.25, and the lumen diameter was 85.37 μm; The cork of the roots and stems were both developed, which was composed of 6 to 7 layers of flat cells; there were many parachyma cells containing needle crystals in the secondary phloem; The leaves of G.parviflora had the typical characteristics of xerophytes leaves: the multiple epidermis; the stomata existed in both upper and lower epidermis,whose densities were 180 mm-2 and 266 mm-2, respectively; the palisade tissue was two-side palisade which included 2 to 3 layers of cylindrical cells in the upper side, with a lot of chloroplasts; the main vein of leaves had well developed xylem ,with a number of radial arranged vessels. The characters mentioned above showed that G.parviflora adapted well to the dry environment.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2009.04.003