International Journal of Forestry and Crop Improvement

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Estimation of Variability and Genetic Parameters for Nut Characters (Weight, Diameter and Length) in the Seedling Raised Natural Walnut (Juglans regia L.) Population in the Kashmir Valley


Affiliations
1 Division of Pomology, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shalimar (J&K), India
     

   Subscribe/Renew Journal


The present investigation entitled estimation of variability and genetic parameters for nut characters (weight, diameter and length) in the seedling raised natural walnut (Juglans regia L.) population in the Kashmir valley was carried out in order to document the available genetic variability in walnut germplasm and to select elite walnut genotypes possessing superior attributes and quality traits. During the survey, data was recorded on one hundred fifty two (152) walnut trees growing in different areas of Kashmir valley. Remarkable variability was observed in seedling walnut trees for different morphological, nut and kernel characters. Similarly, variations were also reported for other characters viz., tree vigour, growth habit, branching habit, leaflet shape, shoot colour, nut shape, shell texture, shell colour, shell seal, shell strength, shell integrity, kernel shrivel and kernel colour. studied the nut length varied from 30.0-60.0 mm with a population mean of 55.62 ± 3.28mm. The phenotypic and genotypic variance was 605.14 and 427.56, corresponding to their co-efficients of variation to the extent of 44.25 and 37.17 per cent, respectively. Heritability (broad sense) and expected gain (% of the mean) was 70.65 per cent and 64.36, respectively. Nut weight revealed a population mean of 14.48 ± 2.54 g with a range of 8.50-30.0 g. The phenotypic (18.785) and genotypic (12.760) variance when translated into their respective co-efficients of variation gave the estimate of 27.98 and 23.02 per cent, respectively. Broad sense heritability was 67.9 per cent and expected genetic gain (% of the mean) as 39.15.

Keywords

Walnut, Nut Characterises, Weight, Lenth.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Anonymous (2007). Corylus colorna. Hazel, Turkish filbert, Turkish Hazelnut, Turkish tree hazel. [c.f.http//:zipcodezoo.com/plants/c/corylus-colornaasp.]

  • Akea, Y. and Sen, S.M. (2001). A study on the genetic variability and selection of superior walnut (Juglans regia L.) trees within seedling population around Van Lake. Acta Hort., 544: 119-124.

  • Bhat, A.R., Ahasnger, H.U., Mir, N.A. and Sofi, A.A. (1992). Evaluation of some walnut selections for quality characters in Jammu and Kashmir emerging trends in temperate fruit production in India. (Eds. Chadha et al.) Hort. Society of India/National Horticulture Board Gurgaon, Haryana, India p. 56-61.

  • Bhat, A.R. and Mir, N.A. (1992). Evaluation of some walnut selections for quality parameters in J&K. In: Emerging Trends in Temperate Fruit Production in India. National Horticulture Board, Gurgoan, India.

  • Bhat, A.R., Naqash, G.S., Avenzato, D. and Dar, G.A. (1999). Comparative evaluation of pomological characteristics of exotic and indigenous walnut selections. Appl. Biological Res., 1: 171-174.

  • Bhat, A.R., Sharma, A.R., Ahmad, M.F. and Singh, S.R. (2002). A study on genetic variability in natural seedling origin walnut (Juglans regia L.) population of Kashmir valley. Appl. Biological Res., 2(1): 22-26.

  • Beyham, E.F. and Permir, V.Z. (2006). Evaluation of walnut nut and kernel characters. Euphytica, 30: 846-850.

  • Casal, A., Diaz, R. and Fernandez, J. (1996). Characteristics of walnut selections. Biochemistry J., 113: 61-63.

  • Guzken, R. and Weiching, F.C. (1990). Walnut germplasm in China. Acta Hort., 184: 345-251.

  • Lal, H., Rathore, D.S. and Prasad, Y. (1993). Evaluation of some promising walnut (Juglans regia L.) cultivars grown at Pithoragarh U.P. Progressive Hort., 25(1-2): 5-8.

  • Mehra, A.S. and Mehra, P.N. (1974). Organogensis and plantlet formation in vitro in almond. Botanical Gazette, 135: 61-73.

  • Mele, E. and Messeguer, J. (1983). Clonal propagation of Corylus avellana L. in vitro. Proceedings of the International Plant Propagators Society (Italy)

  • Perez, C., Fernander, B. and Rodriguez, R. (1983). In vitro plantlet regeneration through asexual embryogenesis in cotyledonary segments of Corylus avellana L. Plant Cell Reproduction, 2: 226-228.

  • Radojevic, L.R., Vujicic, R. and Neskoncm, M. (1975). Embryogenesis in tissue culture of Corylus avellana L. Pflanezenphysiologia, 77: 33-41.

  • Serr, E.F. and Forde, H.I. (1956). Walnut breeding. J. American Soc. Hort. Sci., 5: 1-9.

  • Sharma, O.C. and Sharma, S.D. (2001). Genetic divergence in seedling trees of Persian walnut (Juglans regia L.) for various metric, nut and kernel characters in Himachal Pradesh. Scientia Horticulturae, 88: 163-171.

  • Smith, J.S.C. and Smith, O.S. (1988). The description and assessment of distance between inbred lines of maize, the use of morphological traits as description. Maydica, 34: 141-150

  • Vieter and Vieiter (1980). The significance of allelopathy chestnut cultural systems. North America Growers Nut Association. Annual Report, 72: 117-134.


Abstract Views: 194

PDF Views: 1




  • Estimation of Variability and Genetic Parameters for Nut Characters (Weight, Diameter and Length) in the Seedling Raised Natural Walnut (Juglans regia L.) Population in the Kashmir Valley

Abstract Views: 194  |  PDF Views: 1

Authors

Imtiyaz Ahmad Lone
Division of Pomology, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shalimar (J&K), India

Abstract


The present investigation entitled estimation of variability and genetic parameters for nut characters (weight, diameter and length) in the seedling raised natural walnut (Juglans regia L.) population in the Kashmir valley was carried out in order to document the available genetic variability in walnut germplasm and to select elite walnut genotypes possessing superior attributes and quality traits. During the survey, data was recorded on one hundred fifty two (152) walnut trees growing in different areas of Kashmir valley. Remarkable variability was observed in seedling walnut trees for different morphological, nut and kernel characters. Similarly, variations were also reported for other characters viz., tree vigour, growth habit, branching habit, leaflet shape, shoot colour, nut shape, shell texture, shell colour, shell seal, shell strength, shell integrity, kernel shrivel and kernel colour. studied the nut length varied from 30.0-60.0 mm with a population mean of 55.62 ± 3.28mm. The phenotypic and genotypic variance was 605.14 and 427.56, corresponding to their co-efficients of variation to the extent of 44.25 and 37.17 per cent, respectively. Heritability (broad sense) and expected gain (% of the mean) was 70.65 per cent and 64.36, respectively. Nut weight revealed a population mean of 14.48 ± 2.54 g with a range of 8.50-30.0 g. The phenotypic (18.785) and genotypic (12.760) variance when translated into their respective co-efficients of variation gave the estimate of 27.98 and 23.02 per cent, respectively. Broad sense heritability was 67.9 per cent and expected genetic gain (% of the mean) as 39.15.

Keywords


Walnut, Nut Characterises, Weight, Lenth.

References