Full TGIF Record # 317141
Item 1 of 1
Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/135098
    Last checked: 03/31/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Carroll, Devon; Brosnan, James T.; Horvath, Brandon J.
Author Affiliation:Carroll: University of Tennessee-Knoxville, Knoxville, TN; Brosnan and Horvath: Department of Plant Sciences, University of Tennessee-Knoxville, Knoxville, TN
Title:What's in a name? A timeline of Poa annua taxonomy
Section:Turfgrass management and ecology poster (includes student competition)
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C05 turfgrass science
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Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 135098.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Poa annua L. is a ubiquitous component of turfgrass systems as both a desirable species and troublesome weed. The species name annua, meaning annual in Latin, indicates the species is of an annual life cycle. However, literature readily recognizes the existence of perennial P. annua ecotypes. Why was the species given its epithet? Investigation of P. annua taxonomy reveals many other inconsistencies in modern nomenclature in turfgrass literature. For example, current turfgrass literature uses morphological features such as growth habit, seed production, and plant size to categorize P. annua ecotypes by length of life using only two varieties: P. annua var. annua (annual) or P. annua var. reptans (perennial). However, the original taxonomic descriptions of these varieties, described in 1910 and 1890, respectively, do not link morphology to life cycle. Why does turfgrass literature purport that P. annua life cycle can be deduced from morphological characterization? Additionally, why has turfgrass science embraced a false dichotomy, recognizing only two of the 48 P. annua subtaxa that have been classified? Further inconsistencies in P. annua taxonomy exist in the attribution of authorities and the designation of epithets as varieties or forms. How should P. annua be classified? To answer these questions, a timeline of P. annua taxonomy from discovery forward was developed to provide clarity to present classification. Translation of original taxonomic descriptions of the annua and reptans varieties revealed taxonomists did not intend for morphology and life cycle to be linked. These varieties have been reduced to forms and should be used only to describe specific morphological features. To avoid misclassification, scientists should simply refer to plants as P. annua without further subtaxa classification unless thorough morphological study is conducted."
Note:This item is an abstract only!
"Poster #1242"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Carroll, D., J. T. Brosnan, and B. J. Horvath. 2021. What's in a name? A timeline of Poa annua taxonomy. Agron. Abr. p. 135098.
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    Last checked: 03/31/2022
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