International Journal of Agriculture, Environment and Biotechnology
Citation: IJAEB: 8(2): 237-243 June 2015
DOI Number: 10.5958/2230-732X.2015.00030.3
©2015 New Delhi Publishers. All rights reserved
GENETICS
Correlation and association of characters in Vetiveria
zizanioides (L.) from Kerala part of Peninsular India
T.K.ȱHrideek 1* ,ȱA.V.ȱRaghu 2 ȱandȱK.V.ȱMohanan 3
1 Department of Genetics and Tree Breeding, Kerala Forest Research Institute, Peechi, Thrissur, Kerala-680 653, India.
2 Extension and Training Division, Kerala Forest Research Institute, Peechi, Thrissur, Kerala-680 653, India.
3 Genetics and Plant Breeding Division, Department of Botany, University of Calicut, Kerala-673635, India.
*Corresponding author: hrideek@kfri.res.in
Paper No. 314
Received: 26 March 2014
Accepted: 27 April 2015
Published: 28 June 2015
Abstract
Selectionȱ ofȱ appropriateȱ genotypesȱ basedȱ onȱ charactersȱ thatȱ showȱ goodȱ geneticȱ strengthȱ isȱ aȱ veryȱ
importantȱtoolȱinȱcropȱimprovementȱsinceȱselectionȱcouldȱnotȱbeȱcarriedȱoutȱbasedȱonȱallȱcharacters.ȱ
Studyȱofȱinterrelationshipȱandȱassociationȱofȱcharactersȱisȱessentialȱtoȱidentifyȱtheȱvariablesȱwhichȱshowȱ
maximumȱrelationshipȱwithȱothers.ȱCorrelationȱanalysisȱwasȱcarriedȱoutȱpresentlyȱinȱtheȱcaseȱofȱ12ȱ
morphometricȱcharactersȱinȱvetiverȱ( Vetiveria zizanioides )ȱsoȱasȱtoȱstudyȱtheȱrelationshipȱbetweenȱthem.ȱ
Theȱpresentȱstudyȱrevealedȱvaryingȱdegreesȱofȱinterrelationshipȱbetweenȱtheȱmorphometricȱcharactersȱ
studied.ȱCharacterȱassociationȱwasȱalsoȱstudiedȱsoȱasȱtoȱgroupȱtheȱcharactersȱbasedȱonȱgeneȱsharingȱ
andȱtoȱidentifyȱtheȱleadȱcharactersȱthatȱcouldȱbeȱusedȱinȱfurtherȱbreedingȱprogrammes.ȱPlantȱheightȱ
showedȱtheȱhighestȱfactorȱloadingȱfollowedȱbyȱleafȱbreadth,ȱrootȱlength,ȱleavesȱperȱtillerȱandȱfreshȱrootȱ
weightȱshowingȱtheirȱhigherȱcontributionȱtowardsȱtheȱvariabilityȱofȱtheȱpopulationȱandȱtheirȱusabilityȱ
inȱbreedingȱprogrammesȱasȱleadȱcharacters.
Highlights
  • ȱ Correlationȱ ofȱ theȱ charactersȱ andȱ associationȱ ofȱ agronomicȱ charactersȱ haveȱ beenȱ studiedȱ inȱ 14ȱ
    • varietiesȱofȱ Vetiveria zizanioides.
  • ȱ Characterȱassociationȱleadsȱtoȱgroupingȱtheȱcharactersȱbasedȱonȱgeneȱsharing.
  • ȱ Charactersȱshowingȱhighestȱfactorȱloadingȱcontributeȱmaximumȱvariabilityȱofȱtheȱpopulationȱandȱ
    • theseȱcharactersȱcanȱbeȱusedȱinȱfurtherȱselectionȱprogrammes.
  • ȱ Agronomicȱcharactersȱofȱplantsȱshowȱdifferentȱlevelsȱofȱassociationȱsinceȱtheyȱareȱpolygenic.
    • Keywords: Vetiver,ȱgenotypes,ȱinterrelationship,ȱcorrelationȱanalysis,ȱmorphometricȱcharacters
    Vetiveria zizanioides ,ȱ commonlyȱ knownȱ asȱ vetiverȱ adaptabilityȱandȱresistanceȱtoȱdrought,ȱwaterȱlogging,ȱ
    grass,ȱisȱaȱperennialȱspeciesȱbelongingȱtoȱtheȱfamilyȱ cold,ȱheat,ȱacidityȱandȱalkalinity.ȱMeanwhile,ȱitȱhasȱ
    Gramineae.ȱItȱoriginatedȱfromȱIndiaȱandȱAfricaȱ(Xiaȱ et
    someȱotherȱgoodȱtraitsȱsuchȱasȱaȱstrongȱrootȱsystem,ȱ
    al .ȱ1998).ȱVetiverȱisȱanȱeconomically,ȱpharmaceuticallyȱ fastȱ growth,ȱ easyȱ plantingȱ andȱ highȱ survivalȱ rate,ȱ
    andȱ ecologicallyȱ importantȱ plant.ȱ Rootsȱ ofȱ vetiverȱ andȱitȱneverȱturnsȱintoȱaȱweed,ȱbecauseȱitȱcannotȱbeȱ
    yieldȱ essentialȱ oilȱ thatȱ isȱ usedȱ asȱ aȱ basicȱ materialȱ pollinatedȱandȱfertilized.ȱInȱtheȱpast,ȱtheȱutilizationȱ
    forȱ perfumeryȱ andȱ cosmeticsȱ (Champagnetȱ et al .ȱ ofȱtheȱvetiverȱgrassȱwasȱlimitedȱtoȱtheȱextractionȱofȱ
    2006;ȱMassardoȱ et al .ȱ2006).ȱItȱhasȱstrongȱecologicalȱ theȱfragrantȱoilȱfromȱtheȱrootȱ(Chengȱ1998).