dicotyledon


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dicotyledon

1. any flowering plant of the class Dicotyledonae, normally having two embryonic seed leaves and leaves with netlike veins. The group includes many herbaceous plants and most families of trees and shrubs
2. primitive dicotyledon. any living relative of early angiosperms that branched off before the evolution of monocotyledons and eudicotyledons. The group comprises about 5 per cent of the world's plants

dicotyledon

[‚dī‚käd·əl′ēd·ən]
(botany)
Any plant of the class Magnoliopsida, all having two cotyledons.
References in periodicals archive ?
As was done with the clustering analyses, consensus test results obtained by comparing monocotyledon classifications with one another and dicotyledon classifications with one another were combined.
Sheep--or goat-grazed areas showed higher forage availability in July 1 than in the other months, possibly as a consequence of the decrease in soil moisture from July onward, which can be corroborated by the gradual decrease in dicotyledon frequency.
MADISON Wisconsin ADONISM (Bloomsbury Thesaurus), AMIDONS (pl of amidon, Web2), ASMONDI (Asmondi, a demon, OED father 1916q), DAIMONS (OSPD), D-AMINOS (pl of damino, OED peptidoglycan 1975q), DAMIONS (Damion's [or plural] OED round-house 1958q), DAMONIS (Damonis = of Damon, OED Latian 1879q), DAMOSIN (OED damson), DIAMONS (= diamonds, OED pointed 1575q), DIMONAS (pl of Dimona, author OED yacht 1974q), DOMAINS (Mathematical Glossary of Exciting, Enervating, Scintillating, and Vibrant Terms [privately published], and many other sources), DOMINAS (pl domina), MAIDONS (OED head 1400q), MANDIOS (pl of mandio, OED manioc), MANIDOS (ST: pl of OED manido = Manitou), MONDIAS (pl of m ondia, a genus of dicotyledon), MONIDAS (pl of Monida, town on Montana-Idaho border), ODISMAN (OED oddsman)
Ecology of Sydney plant species Part 2: dicotyledon families Asteraceae to Buddlejaceae.
According to previous studies, most dicotyledon plants are sensitive to 24-26 kDa protein (Schouten et al.
Solereder's thesis (1885), Uber den systematischen Wert der Holzstrukture bei den Dicotyledonen," set a precedent followed by his (1908) compilation "Systematic anatomy of the Dicotyledons," and Metcalfe & Chalk's (1950) "Anatomy of the Dicotyledons." The arrangement of the data by families is not just for the convenience of accessing data on particular plants: it was developed from the conviction that wood features could be used as systematic tools for wood identification.
A cladogram constructed based on multiple sequence alignments of the polyproteins of BCMV-NL4 and 54 other viruses using the Neighbour-Joining method (25) with BrSMV as the outgroup, showed that BCMV-NL4 is most closely related to BCMV-NL1, and was clustered with the other strains and isolates of BCMV into a broader group of potyviruses infecting legumes and other dicotyledons plants (Figure 3).
Discussion of the origin, variation and adaptation, and distribution control factors of Australian tree species precludes coverage of gymnosperms, dicotyledon angiosperms, and monocotyledon angiosperms, arranged in that order.
Although there is no consensus concerning the precise phylogenetic position of the monocotyledons within the angiosperms, most studies suggest that the monocotyledons are diverged from a common ancestor with a basally diverged dicotyledon group.
The SA-enhanced heat tolerance has also been reported in dicotyledon species.
A gene from wheat, a monocotyledon, was property turned on by light and expressed in the appropriate tissues in tobacco, a dicotyledon, Chua reports.
This gene exists only in dicotyledon (Halford and Hardie, 1998).