Genetic Resources and Crop Evolution

, Volume 53, Issue 7, pp 1485–1493 | Cite as

Collection and Characterization of Citrus indica Tanaka and C. macroptera Montr.: Wild Endangered Species of Northeastern India

  • S. K. Malik
  • R. Chaudhury
  • O. P. Dhariwal
  • Rajwant K. Kalia
Article

Abstract

Citrus indica and C. macroptera are the wild endangered species of Citrus occurring in northeastern India. Surveys were undertaken in this region for ascertaining distribution, studying variability and for collection of germplasm of these two species. C. indica, an endemic species of this region, was collected from the Citrus Gene Sanctuary located in buffer zone of Nokrek Biosphere Reserve in the Garo hills of Meghalaya. In addition, a putative natural hybrid of C. indica and C. limon was collected for the first time from the south Garo hills. C. macroptera had much wider distribution and was collected from Mizoram and Meghalaya states. In Jantia hills of Meghalaya, natural populations of this species are in a highly threatened state. The two species were unevenly distributed all over the explored territory. Morphological characterization of leaves, fruits and seeds indicated the presence of sizable variability within collected accessions of these two Citrus species. Indigenous technical knowledge gathered on the use and socio-economic importance indicated commercial potential for these two species in northeastern India. However, lack of cultivation of these species and clearing of forest cover at an alarming rate has led to an urgent need to adopt complementary conservation strategies to safeguard these species and to ensure their availability for future utilization. A major emphasis on developing methods for their propagation, multiplication and regeneration in in situ and ex situ conditions is required.

Key words

Citrus Gene Sanctuary Citrus indica Citrus macropteta Conservation Endemic Hybrid Indian wild orange Melanesian papeda 

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References

  1. (1996). Loss of biodiversity and need for conservation. In: (eds) Changing Perspectives of Biodiversity Status in the Himalaya, pp. The British Council, New DelhiIndiaGoogle Scholar
  2. (1956). Classifications of Citrus fruits of Assam. ICAR Sci. Monograph 20: 1–110Google Scholar
  3. (1951–52). Habits of man and the origins of the cultivated plants of the Old World. Proc. Linnean Soc. Lond. 164: 12–42Google Scholar
  4. (1995). Status report of tropical fruit species in south Asia. In: (eds) Proceedings of Expert Consultation on Tropical Fruit Specially Asia, MARDI Serdang, Kuala Lumpur, pp 45–60. IPGRI Office for South Asia, New DelhiGoogle Scholar
  5. (1997). Collecting of Citrus germplasm from the Mizoram and Tripura hills of India. Plant Genet. Resour. Newslett. (IPGRI/FAO) 110: 57–59Google Scholar
  6. (2004). Genetic resources of Citrus of north-eastern India and their potential use. Genet. Resour. Crop Evol. 51: 411–418CrossRefGoogle Scholar
  7. Singh B. 1981. Establishment of First Gene Sanctuary for Citrus in Garo Hills. Concept Publishing Company, New Delhi.Google Scholar
  8. (2001). Exploration and collection of citrus germplasm from NEH region (Meghalaya) of India. Indian J. Plant Genet. Resour. 14: 70–73Google Scholar
  9. Singh I.P. and Singh S. 2003. Exploration, collection and mapping of citrus genetic diversity in India. Technical Bulletin No.7, National Research Centre for Citrus, Nagpur.Google Scholar
  10. Swingle W.T. 1946. Botany of Citrus. In: Citrus Industry Vol. 1. University of California Press, USA, pp. 129–474.Google Scholar
  11. (1967). The botany of Citrus and its wild relatives. In: (eds) The Citrus Industry, pp 190–340. University of California Press, BerkeleyGoogle Scholar
  12. (1928). On certain new Species of citrus.. Studia Citrologica 2: 155–164Google Scholar
  13. (1937). Citrus fruits of India. Allahabad Farmer 2: 53–57Google Scholar
  14. (1958). The origin and dispersal of citrus fruits having their centre of origin in India. Indian J. Horticult. 15: 101–115Google Scholar
  15. (1998). Crop gene pools in the Northeast Indian Himalayas and threats. In: (eds) Managing Agrobiodiversity-Farmers Changing Perspective and Institutional Responses in the Hindu Kush-Himalayan Region, pp 167–173. ICIMOD & IPGRI, Kathmandu, NepalGoogle Scholar
  16. Zeven A.C. and de Wet J.M.J. 1982. Dictionary of Cultivated Plants and Their Regions of Diversity. Centre for Agricultural Publishing and Documentation, Wageningen, The Netherlands.Google Scholar

Copyright information

© Springer 2006

Authors and Affiliations

  • S. K. Malik
    • 1
  • R. Chaudhury
    • 1
  • O. P. Dhariwal
    • 2
  • Rajwant K. Kalia
    • 1
  1. 1.Tissue Culture and Cryopreservation UnitNational Bureau of Plant Genetic ResourcesNew DelhiIndia
  2. 2.Exploration and Collection DivisionNational Bureau of Plant Genetic ResourcesNew DelhiIndia

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