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Comparison of Purple Nutsedge (Cyperus rotundus) from Around the World

Published online by Cambridge University Press:  12 June 2017

Gene D. Wills
Gene D. Wills*
Affiliation:
Delta Research and Extension Center, Mississippi Agricultural and Forestry Experiment Station, Stoneville, MS 38776, E-mail: [email protected]
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Abstract

Purple nutsedge collections from 13 states within the continental United States and from 21 other locations around the world were studied to compare their reproduction and morphological characteristics. Differences occurred in the number of shoots produced from single tubers, the number of leaves per shoot, and the length and width of leaves. Differences were also found with respect to flowering, length of culms supporting the inflorescences, and number, length, and width of involucral bracts at the apex of the culms. Variations occurred in the flower parts, including the number and length of rachises and the length of rachillae and spikelets. There were differences in the growth patterns of the leaves, with some collections having leaves mostly erect and others having leaves lie more closely to the ground. The color of the leaves varied between light and dark green, and the color of the inflorescence varied between light and dark purplish-brown. Greater variation was found among plants from different locations around the world than from within the continental United States.

Keywords

Purple nutsedge, Cyperus rotundus L. # CYPROBiotypesmorphologyCyperus rotundusCYPROAL, AlabamaAR, ArkansasARG, ArgentinaAUST, AustraliaAZ, ArizonaBRAZ, BrazilCA, CaliforniaCOL, ColombiaEL SAL, El SalvadorGREE, GreeceHI, HawaiiINDO, IndonesiaISR, IsraelJAP, JapanLA, LouisianaMALA, MalaysiaMAUR, MauritiusNC, North CarolinaNM, New MexicoNZ, New ZealandPHIL, the PhilippinesPR, Puerto RicoSC, South CarolinaSUDA, SudanTAIW, TaiwanTANZ, TanzaniaTHAI, ThailandTN, TennesseeTX, TexasUSA, United States of AmericaWI, the West IndiesWS, Western Samoa
Type
Research
Information
Weed Technology , Volume 12 , Issue 3 , September 1998 , pp. 491 - 503
Copyright
Copyright © 1998 by the Weed Science Society of America 

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References

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