HORT 101 Plant Classification Notes
HORT 101 Plant Classification Notes HORT 101
Popular in Fundamentals of Horticulture
Popular in Agriculture and Forestry
This 3 page One Day of Notes was uploaded by Mariah Rodriguez on Friday January 30, 2015. The One Day of Notes belongs to HORT 101 at Purdue University taught by Michael Dana in Spring2015. Since its upload, it has received 61 views. For similar materials see Fundamentals of Horticulture in Agriculture and Forestry at Purdue University.
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Date Created: 01/30/15
Tuesday January 20 2015 HORT 101 plant classification notes Classification Carl Von Linne Swedish physician father of taxonomy Classification system called quotspecies plantarumquot In this system organisms are placed into categories called taxa Kingdomgt Divisiongt Classgt Ordergt Familygt GenusgtSpeciesbroad gtnarrow Based on morphological features especially flower structure Avoid features that can vary incorporates the concept of evolution The last two taxagenus and species are the binomial system Binomial system avoids confusion that arises from use of common names L indicates authority of person who first named species Linnaeus Botanical varieties quotvar quot indicates variety lnterspecific hybrids quotxquot indicates plants result from a cross between 2 diff plants the x is never spoken just written Cultivars cultivated varieties plants within species that share common characteristics that are maintained through propagation Each name has two components Genus species epithet species Genus describes a group of similar organisms Species members of the species will interbreed and produce similar progeny Must be written in italics or underlined and first letter of genus is capitalized Advantages of system Universal Based on international convention Tuesday January 20 2015 Uses Latin a dead language that will not change Categorizing plants It is important and convenient to group plants together based on common characteristics lifecycle Annuals plants that complete their life cycle from seed to seed in one year Eg Peas and petunias Biennials plants that require all or part of two growing seasons second growing season Eg Carrots Perennials plants that persists for more than two seasons and to not die after flowering Eg Tulips daylily Poinsettia an annual flower crop or a perennial shrub Growth Habit normally applied to perennial plants Woody plants Herbaceous perennials do not have Woody structures Vines require support Deciduous plants shed leaves for part of the year usually due to cold or dryness Evergreens never without leaves Environmental adaptation Temperature Soil conditions Halophytes adapt to salty conditions Acidophytes require acid soils Metallophytes require high levels of a specific metal Tuesday January 20 2015 Water Xerophytesrequire little water Use or function Edible plants Medical plants Plants that provide materials for various industrial uses Ornamental uses The Classifications are subieotive they are not understood throughout the world in different languages or across cultures Quiz questions 1