dicotyledon


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di·cot·yl·ed·on

(dī-kot'il-ē'don),
Plant (shrub, herb, or tree) with seeds that consist of two cotyledons, that is, the primary or rudimentary leaf of the embryo of seed plants.
Dicotyledonclick for a larger image
Fig. 131 Dicotyledon . The differences between dicotyledons and monocotyledons.

dicotyledon

any flowering plant of the subclass Dicotyledonae, class Angiospermae. Other ANGIOSPERMS belong to the subclass Monocotyledonae (see MONOCOTYLEDON). See figs. 131 and 171 .
References in periodicals archive ?
Modem authors share similar monocotyledon and dicotyledon classifications at the family level and above.
Dicotyledon dry mater supply decreased (p < 0.10) progressively from July (66.1 kg DM 100 [kg.sup.-1] LV [day.sup.-1]) to August-September and October (16.5 kg DM 100 [kg.sup.-1] LW [day.sup.-1]).
Ecology of Sydney plant species Part 3: dicotyledon families Cabombaceae to Eupomatiaceae.
As regards to purpose of experiment, that was finding NLP phytotoxins in 4 isolated of pest-stricken pea plants from province of Lorestan and since obtained phytotoxins were active just on dicotyledon plants, Act extracellular, caused rapid activate of defense cell response and leads cell to necrotic and death (Garcia et al.
Bibliography of systematic wood anatomy of dicotyledons. IAWA Journal, Supplement 1: 1-265.
Although there is no consensus concerning the precise phylogenetic position of the monocots within the angiosperms (Angiosperm Phylogeny Group (APG), 2003), most studies suggest that the monocots are diverged from a common ancestor with a basal dicotyledon (dicot) group.
Exogenous application of SA improved plant tolerance to heat (Dat et al., 1998), chilling (Janda et al., 1999), and salt stress (Borsani et al., 2001) in dicotyledons. Application of SA has recently been reported to increase heat tolerance in creeping bentgrass (Agrostis palustris Huds.) (Larkindale and Huang, 2004) and tall fescue (Festuca arundinacea Schreb.) seedlings (He et al., 2002).
Root-stem junctions of a desert monocotyledon and a dicotyledon: hydraulic consequences under wet conditions and during drought New Phytologist 121:377-385
271 species in 34 dicotyledon and seven monocotyledon families are host of TSWV (Edwarson & Christie 1986).
Systematic, ecological, and evolutionary aspects of dicotyledon wood.
The triarchy observed in Chamaesyce and Euphorbia species seem to be slightly frequent in dicotyledon according to the author.