Characterization of Walnut ( Juglans Regia L.) Genotypes in Ladakh Region of India
typesȱ (UPOVȱ 1988,ȱ Guptaȱ 1997,ȱ Solarȱ et al. 2002).ȱ shape.ȱTheȱshellȱtextureȱofȱG 2 ȱandȱG 4 ȱwasȱmediumȱ
Solarȱ et al. (2002)ȱfoundȱsemi-erectȱgrowthȱhabitȱwithȱ roughȱwhileȱG 3 ȱwasȱmediumȱtoȱroughȱandȱG 1ȱ wasȱ
majorityȱofȱtheȱwalnutȱstrengthȱinȱSlovenia.ȱAȱwideȱ rough.ȱTheȱshellȱcolourȱofȱG 1 ȱwasȱlight,ȱmediumȱinȱ
variationȱinȱpomologicalȱandȱphenologicalȱcharacterȱ G 2 ,ȱlightȱ toȱmediumȱinȱG 3 ȱandȱmediumȱtoȱdarkȱinȱ
similarȱtoȱtheȱpresentȱinvestigationȱwasȱalsoȱreportedȱ G 4 .ȱ Theȱ shellȱ sealȱ andȱ shellȱ strengthȱ wasȱ observedȱ
byȱAkcaȱ andȱ Senȱ (2001).ȱ Theȱ branchingȱ habitȱ wasȱ strongȱinȱtheȱgenotypesȱexceptȱG 2 ȱwhichȱwasȱweakȱ
denseȱinȱgenotypesȱG 3 ȱandȱG 4 ,ȱintermediateȱinȱG 1 ȱandȱ toȱ intermediate.ȱ Shellȱ integrityȱ ofȱ allȱ genotypesȱ ofȱ
intermediateȱtoȱdenseȱinȱG 2 .ȱLeafletȱshapeȱobservedȱ walnutȱwasȱcompleteȱshell,ȱnoȱholesȱwasȱrecorded.ȱ
wasȱelliptic,ȱleafletȱmarginȱwasȱentireȱandȱleafȱcolourȱ Theȱ kernelȱ flavourȱ wasȱ satisfactoryȱ andȱ kernelȱ
wasȱgreenȱinȱallȱtheȱfourȱgenotypes.ȱTheȱgreenȱcolourȱ plumpnessȱwasȱmoderateȱinȱallȱtheȱgenotypes.ȱTheȱ
ofȱtheȱfullyȱexpandedȱleavesȱwasȱinȱconfirmativeȱwithȱ kernelȱfillȱwasȱhoweverȱmoderateȱtoȱwellȱinȱG 3 ȱandȱ
theȱfindingsȱofȱSharmaȱ et al. (2014).ȱTheȱhighestȱvalueȱ wellȱ inȱ natureȱ inȱ otherȱ threeȱ genotypes.ȱ Easeȱ ofȱ
ofȱleafȱlengthȱwasȱrecordedȱinȱG 2ȱ andȱG 4 ,ȱwhereas,ȱG 3
removalȱ ofȱ kernelȱ halvesȱ wasȱ veryȱ easyȱ inȱ G 2 ȱ andȱ
recordedȱtheȱmaximumȱinȱwidthȱofȱleafȱandȱnumberȱ easyȱinȱotherȱthreeȱgenotypes.ȱTheȱkernelȱcolourȱwasȱ
ofȱleafletsȱ(Tableȱ3).ȱSimilarȱtoȱtheȱpresentȱfindings,ȱaȱ lightȱinȱG 2 ȱandȱG 4 ,ȱwhileȱextraȱlightȱandȱlightȱtoȱamberȱ
significantȱdifferenceȱinȱfoliageȱcharactersȱwereȱalsoȱ wasȱobservedȱinȱG 1ȱ ȱandȱG 3ȱ respectively.ȱ(Tableȱ2).ȱTheȱ
reportedȱbyȱSharmaȱ et al. (2010).ȱRachisȱcolourȱwasȱ maximumȱnutȱdiameterȱandȱnutȱlengthȱwasȱobservedȱ
observedȱgreenȱandȱshootȱcolourȱwasȱbrownȱinȱallȱ inȱtheȱgenotypesȱexcludingȱG 2 .ȱThisȱisȱhigherȱthanȱ
theȱ genotypesȱ andȱ shootȱ pubescenceȱ andȱ leafȱ andȱ theȱvalueȱobservedȱbyȱSharmaȱ et al. (2014)ȱinȱcloneȱ
rachisȱpubescenceȱwasȱglabrousȱinȱallȱtheȱgenotypesȱ ‘GL0109’.ȱTheȱshellȱthicknessȱandȱinshellȱnutȱweightȱ
exceptȱG 3 ȱwhichȱwasȱslightlyȱpubescent.ȱSharmaȱ et
recordedȱ theȱ maximumȱ inȱ G 4 ȱ andȱ G 3 ȱ respectively.ȱ
al. (2014)ȱ howeverȱ observedȱ slightlyȱ pubescentȱ inȱ TheȱkernelȱweightȱwasȱhighestȱinȱG 3 ȱ(Figureȱ1),ȱwhileȱ
shootsȱofȱeliteȱcloneȱ‘GL0109’ȱofȱwalnutȱwhichȱareȱ kernelȱpercentageȱwasȱfoundȱtoȱbeȱhighestȱinȱG 1 ȱandȱ
greenȱandȱbrownȱinȱcolour.
G 2 ȱ(Tableȱ3).ȱTheȱvariabilityȱinȱkernelȱcharactersȱinȱ
theȱpresentȱresultȱisȱinȱconfirmativeȱwithȱtheȱfindingsȱ
TheȱnutȱshapeȱwasȱbroadȱtoȱovateȱinȱG 2 ȱandȱG ,ȱwhileȱ
3
ofȱSharmaȱ et al. (2010)ȱandȱDoganȱ et al. (2005).
G 1 ȱ wasȱ broadȱ ovateȱ andȱ G ȱ wasȱ broadȱ ellipticȱ inȱ
4
Table 1. Qualitative traits of tree morphological, leaf characters, rachis and shoots of different genotypes of walnut.
Genotypes
Character
G 1
G 2
G 3
G 4
Tree vigour
Intermediate
Intermediate
Intermediate-high
Intermediate
Growth habit
Semi-erect
Spreading
Spreading
Spreading
Branching
Intermediate
Intermediate-dense
Dense
Dense
Leaflet shape
Elliptic
Elliptic
Elliptic
Elliptic
Leaflet margin
Entire
Entire
Entire
Entire
Leaf colour
Green
Green
Green
Green
Rachis colour
Green
Green
Green
Green
Shoot pubescence
Glabrous
Glabrous
Slightly pubescent
Glabrous
Shoot colour
Brown
Brown
Brown
Brown
Leaf and rachis pubescence
Glabrous
Glabrous
Slightly pubescent
Glabrous
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