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The morphological study of the fruit, seed and seedling of Hydrocharis dubia (Hydrocharitaceae).
Author(s):
1. Jian Ru: Key Laboratory of Molecular Cytogenetic and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, P.R. China
2. Mei Liu: Key Laboratory of Molecular Cytogenetic and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, P.R. China
3. Xin Yu Cheng: Key Laboratory of Molecular Cytogenetic and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, P.R. China
4. Chen Wang: Key Laboratory of Molecular Cytogenetic and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, P.R. China
Abstract:
The structure of the fruit, seed and seedling of Hydrocharis dubia in Hydrocharitaceae were studied with light microscope. The results show that the fruit has incompletely six locules with superficial placentation. The seed has anchorlike trichomes occur on the surface and with no endosperm. The seed embryo develops on the water. The hypocotyl hairs appear earlier than the primary root which develops weakly. The adventitious roots are formed with the leaf development. The paracytic stomata are present in the upper epidermis of the young leaf and the air canals are present in the mesophyll. The petiole has a sheath-like base. The seedlings usually die and only a few could develop into mature plants and the development of the species is similar to those of the other taxa in Alismatales. The study provides the morphological evidence for the placement of the Hydrocharitaceae in the order Alismatales.
Page(s): 1467-1472
DOI: DOI not available
Published: Journal: Pakistan Journal of Botany, Volume: 47, Issue: 4, Year: 2015
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