Vol. 32 No. 1 (2018)
Reviews

Bio-techniques for improvement of qualitative and quantitative traits in walnut (Juglans regia)

Uzma Shah
Department of Biotechnology, University of Kashmir, Srinagar, Jammu and Kashmir
Javid Mir
Central Institute of Temperate Horticulture (ICAR), Srinagar, Jammu and Kashmir
Nazeer Ahmed
Sher-i-Kashmir University of Agricultural Science and Technology, Jammu and Kashmir
Abbu Zaid
Plant Physiology and Biochemistry Laboratory, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, 202002 Aligarh
Sumira Jan
Sher-i-Kashmir University of Agricultural Science and Technology, Jammu and Kashmir
Khalid Fazili
Department of Biotechnology, University of Kashmir, Srinagar, Jammu and Kashmir
Shabir Wani
MRCFC, Khudwani, Sher-i-Kashmir University of Agricultural Science and Technology, Jammu and Kashmir

Published 2017-10-27

Keywords

  • antioxidants,
  • molecular markers,
  • nutraceuticals,
  • polyphenols,
  • phytochemicals

How to Cite

Shah, U., Mir, J., Ahmed, N., Zaid, A., Jan, S., Fazili, K., & Wani, S. (2017). Bio-techniques for improvement of qualitative and quantitative traits in walnut (Juglans regia). Advances in Horticultural Science, 32(1), 113–135. https://doi.org/10.13128/ahs-21330

Abstract

Walnut, Juglans regia (L.) is an economically significant plant for its immense nutritive and economic value. The breeding character of walnut has lent it a wide diversity in genetic characteristics. The principal vegetative and common traditional agronomic traits together with biochemical characterization i.e., karyotyping and isoenzyme expression have been the early research methods. However, these techniques are time-consuming and susceptible to the environmental variations. Literature is meager in the distribution, applied applications in general and the use of agriculture biotechnology in particular in case of walnut plants. The bio-techniques like molecular markers are adequate in number and there is little or no diversity in the method employed for research on walnuts. Despite basic research method, the organization of information, its retrieval and presentation structures, form elaboration experienced immense advancement via molecular markers such as RFLP, ISSR, RAPD AFLP, SSR and SNP. This appraisal in its first part provides detailed information regarding the present scenario of data on biogeographical distribution, health benefits of walnut worldwide and current applications in the agroforestry management, biochemical evaluations and applied uses of a walnut tree which is relevant for both basic and applied research. The review in its second part sheds light on the application of sophisticated agricultural biotechnology techniques such as use of molecular markers to evaluate, realize the full potential of walnut for increasing its quality, quantity and for its sustainable production which cannot be obtained through usual breeding techniques to meet the demands of a projected world population.

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