Distribution and cytology of Quercus baloot Griff.; an endemic tree species of North-West Himalayas Authors
First Online: 21 November 2013 Received: 26 June 2013 DOI:
Cite this article as: Sharma, E., Bushan, U., Sharma, G. et al. Nucleus (2013) 56: 191. doi:10.1007/s13237-013-0097-1 Abstract Quercus baloot Griff. (Fagaceae) an important tree species, found in Jammu region of J & K State, India was studied for distribution and cytology. In this region, the wild stands of this species have been located at Thatri, Shalimar, Dool, Bhandarkot and Kishtwar High Altitude National Park (KHANP) areas of Kishtwar district and Sindra, Balessa, Prano, Bhalla, Chinta, Nalthi and Jai in Bhaderwah area of Doda district. Karyotypic analysis on the species collected from Sindra revealed the presence of 2n = 24 very small sized chromosomes. Of these, 2 were median and 22 were submedian. Meiosis in pollen mother cells of the species at diakinesis revealed the presence of multivalents plus bivalents in 25 % cells and 12 bivalents in 75 % cells. At metaphase-I, 12 bivalents were present. Segregation was regular at anaphase-I and pollen stainability as determined by using 1 % acetocarmine and 2, 3, 5, triphenyl tetrazolium chloride was found to be 81.5 % and 45.92 % respectively. Keywords Bivalents Karyotype analysis Multivalent Quercus baloot References
Alamgir KG. A study on the condition, use, management and trends of major forest types in Chitral District. Report on Chitral conservation strategy and IUCN Sarhad Program. 2004;pp. 111.
Bedi YS, Gill BS, Bir SS. Cytological evolution in the woody taxa of Gamopetalae and Monochlamydeae. J Cytol Genet. 1985;20:162–203.
Brandis D. The forest flora of North-West and central India; a hand book of the indigenous trees and shrubs of those countries prepared at herbarium of the Royal Gardens, Kew. Reprinted by Bishen Singh Mahendra Pal Singh, Dehradun. 1972.
Burnham CR. Chromosomal interchanges in plants. Bot Rev. 1956;22:419–552.
D’Emerico S, Balanco P, Medagli P, Schirone B. Karyotype analysis in
Quercus spp. (Fagaceae). Silvae Genet. 1993;44:66–70.
Darlington CD, Wylie AP. Chromosome atlas of flowering plants. London: George Allen and Unwin Ltd.; 1955.
Denk T, Grim GW. The oaks of western Eurasia: traditional classification and evidences from two nuclear markers. Taxon. 2010;59:351–66.
Duffield WJ. Chromosome counts in
. Am J Bot. 1940;27:787–8.
Jovanovic M, Tucovic A. Genetics of common and sessile oaks (
Quercus robur L. and petraea Liebl.). Ann Forestales. 1975;7:23–53.
Khan N, Ahmed M, Wahab M, Ajaib M. Phytosociology, structure and physiochemical analysis of soil in
Quercus baloot Griff, District Chitral Pakistan. Pak J Bot. 2010;42:2429–41.
Khurram M. Studies on the isolation and characterization of secondary metabolites from
Dodonaea viscose and Quercus baloot and their potential as antibacterial agents. Ph.D. Thesis. Islamabad: Quaid-I-Azam University; 2010.
Mehra PN, Hans AS, Sareen TS. Cytomorphology of Himalayan Fagaceae. Silvae Genet. 1972;21:102–9.
Natividate JV. Investigacoes nalgumas species e hybridos do genero
Quercus. Bot Soc Brot. 1937;12:21–85.
Romero ZC. A new method for estimating karyotype asymmetry. Taxon. 1986;35:526–30.
Sax HJ. Chromosome number in
Quercus. Arnold Arbor. 1930;11:220–3.
Stairs GR. Microsporogenesis and embryogenesis in
. Bot Gaz. 1964;125:115–21.
Stebbins GL. Chromosomal evolution in higher plants. London: Edward Arnold; 1971.
Tutasuk VH, Turchaninova LV. About the chromosome number of
Quercus castaneifolia C A M Dokl Akad Nauk Azerbajdzansk S S R. 1968;24:47–50.
Vignoli L. Studio citologico sul genere
Quercus. Lav R Ist Bot Palermo. 1933;4:25–39.
Yilmaz A, Emel U, Babac T. Cytogenetic studies on
Quercus L. (Fagaceae) species belonging to Ilex and Cerris section in Turkey. Caryologia. 2011;64:297–301. Copyright information
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