International Journal of Agriculture, Environment and Biotechnology
Citation: IJAEB: 8(2): 265-270 June 2015
DOI Number: 10.5958/2230-732X.2015.00033.9
©2015 New Delhi Publishers. All rights reserved
GENETICS
Characterization of Walnut ( Juglans Regia L.) Genotypes
in Ladakh Region of India
S.ȱAngmo 1 ,ȱS.ȱDiengngan 2* ȱandȱM.A.ȱHasan 3
1 Department of Horticulture, Institute of Agricultural Science, University of Calcutta, Kolkatta, West Bengal, India
2, 3 Department of Fruits and Orchard Management, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal – 741252
*Corresponding author: shibhortfsc@gmail.com
Paper No. 317
Received: 22 April 2014
Accepted: 24 May 2015
Published: 30 June 2015
Abstract
LadakhȱregionȱincludesȱLehȱandȱKargilȱdistrictsȱofȱJammuȱandȱKashmirȱinȱIndia.ȱTheȱregionȱisȱcoldȱ
andȱaridȱlimitingȱtheȱgrowingȱofȱfruitȱcrops.ȱTheȱstudyȱaimsȱtoȱcharacterizeȱwalnutȱdiversityȱinȱtheȱ
regionȱ whichȱ wouldȱ beȱ resourcefulȱ inȱ theȱ nearȱ futureȱ forȱ variousȱ purposesȱ andȱ boostȱ upȱ walnutȱ
cultivation.ȱFourȱgenotypesȱareȱselectedȱfromȱvariousȱwalnutȱgrowingȱareasȱofȱLadakhȱ viz. G 1ȱ fromȱ
Skara,ȱG 2ȱ fromȱNurla,ȱG 3ȱ fromȱTemisgamȱandȱG 4ȱ fromȱDhomkhar.ȱItȱwasȱevidentȱthatȱmajorityȱofȱtheȱ
genotypesȱexhibitedȱintermediateȱtreeȱvigourȱwithȱspreadingȱnatureȱofȱgrowthȱhabit,ȱglabrousȱshootȱ
pubescenceȱandȱleafȱandȱrachisȱpubescence,ȱstrongȱshellȱsealȱandȱshellȱstrengthȱwithȱgoodȱnutȱdiameterȱ
andȱnutȱlength,ȱsatisfactoryȱkernelȱflavor,ȱwellȱfilledȱkernelȱandȱeasyȱremovalȱofȱkernelȱhalves.ȱLeafletȱ
shapeȱobservedȱwasȱelliptic,ȱleafletȱmarginȱwasȱentire,ȱgreenȱleafȱandȱrachisȱcolour,ȱbrownȱshootȱcolour,ȱ
completeȱshellȱintegrityȱandȱkernelȱplumpnessȱwasȱmoderateȱinȱallȱtheȱfourȱgenotypes.ȱTheȱbranchingȱ
habitȱwasȱdenseȱinȱgenotypesȱG 3 ȱandȱG 4 ,ȱintermediateȱinȱG 1 ȱandȱintermediateȱtoȱdenseȱinȱG 2 .ȱInȱgeneral,ȱ
theȱhighestȱvalueȱofȱleafȱlengthȱandȱkernelȱpercentageȱwasȱrecordedȱinȱG 2 .ȱG 3 ȱexhibitedȱtheȱmaximumȱ
widthȱofȱleaf,ȱnumberȱofȱleaflets,ȱinshellȱnutȱweightȱandȱkernelȱweight.ȱTheȱnutȱshapeȱwasȱbroadȱtoȱ
ovateȱinȱG 2 ȱandȱG 3 ,ȱwhileȱG 1 ȱwasȱbroadȱovateȱandȱG 4 ȱwasȱbroadȱellipticȱinȱshape.ȱTheȱshellȱtextureȱofȱ
G 2 ȱandȱG 4 ȱwasȱmediumȱwhileȱG 3 ȱwasȱmediumȱtoȱroughȱandȱG 1ȱ wasȱrough.ȱTheȱshellȱcolourȱofȱG 1 ȱwasȱ
light,ȱmediumȱinȱG 2 ,ȱlightȱtoȱmediumȱinȱG 3 ȱandȱmediumȱtoȱdarkȱinȱG 4 .ȱTheȱshellȱthicknessȱrecordedȱ
theȱmaximumȱinȱG 4 .ȱTheȱkernelȱcolourȱwasȱlightȱinȱG 2 ȱandȱG 4 ,ȱwhileȱextraȱlightȱandȱlightȱtoȱamberȱwasȱ
observedȱinȱG 1ȱ ȱandȱG 3ȱ respectively.
Highlights
  • ȱ FourȱgenotypesȱareȱselectedȱfromȱvariousȱwalnutȱgrowingȱareasȱofȱLadakh.
  • ȱ Characterizationȱandȱevaluationȱofȱtheȱgenotypesȱareȱcarriedȱout.
  • ȱ Theȱgenotypesȱexhibitedȱvariabilityȱinȱtheȱleaf,ȱshoot,ȱnut,ȱshellȱandȱkernelȱcharacters.
  • ȱ G 2 ,ȱG 3 ȱandȱG 4 ȱareȱsupremeȱinȱseveralȱcharactersȱandȱcanȱbeȱusedȱforȱvariousȱcropȱimprovementȱ
    • programmes.
    Keywords: ȱCharacterization,ȱgenotypes,ȱLadakh,ȱwalnut
    Englishȱ orȱ Persianȱ walnutȱ (Juglansȱ regiaȱ L.),ȱ theȱ widelyȱeatenȱbothȱfreshȱandȱinȱcookery,ȱasȱwellȱasȱ
    onlyȱ speciesȱ cultivatedȱ widelyȱ forȱ nutȱ productionȱ forȱ flavouringȱ andȱ confectionery.ȱ Walnutȱ areȱ alsoȱ
    isȱ deciduousȱ inȱ natureȱ andȱ belongsȱ toȱ theȱ familyȱ excellentȱ sourceȱ ofȱ omega-3ȱ fattyȱ acids,ȱ vitaminsȱ
    Juglandaceae.ȱ Walnutsȱ areȱ oneȱ ofȱ theȱ severalȱ highȱ andȱ minerals,ȱ andȱ valuedȱ asȱ healthyȱ snackȱ foodȱ
    nutrientȱdensityȱfoods.ȱNutsȱareȱrichȱinȱoil,ȱandȱareȱ (Ranaȱ et al. 2007).ȱUnlikeȱmostȱnutsȱthatȱareȱhighȱinȱ