%0 Journal Article
%T Quantitative Karyotype Analysis of Lycopersicon esculentum cv. Oxheart
%A M.A. Rahman
%A M.A.I. Khan
%A S.M. Jobair Hossain
%A M. S. Hossain
%J Pakistan Journal of Biological Sciences
%D 2002
%I Asian Network for Scientific Information
%X The chromosomes were identified individually and standard karyotype of Lycopersicon esculentum cv. Oxheart was formulated. Roots were collected from germinating seeds and were pre-treated in a saturated aqueous solution of monobromonaphthalene. After iron-alum mordanting, standard hematoxylin method was followed. 2n = 24 chromosomes were found. Karyotype analysis was carried out following a quantitative method using scatter diagram technique. Only two chromosomes were identified individually and the rest were morphologically characterized. One of the two identified chromosomes had mean total length 3.1¦Ì and mean arm ratio 1.3 whereas, the other one had mean total length 2.5¦Ì and mean arm ratio 2.0. The length of the prometaphase chromosomes ranged from 1.3 to 3.1¦Ì. The karyotype of the studied tomato genotype consists of 8 metacentric and 4 sub-metacentric chromosomes. One pair of satellited chromosomes was also observed.
%K Acridine
%K antibiotic resistance
%K ascorbic acid
%K auxotrophic mutant
%K generation time
%K mutation frequency
%K mutation rate
%K rhizobium
%K salt stress
%U http://docsdrive.com/pdfs/ansinet/pjbs/2002/581-584.pdf