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Volume : III, Issue : IV, May - 2013 INDUCTION OF POLYPLOID MUTANT IN LINUM USITATISSIMUM L. BY THE COMBINED ACTION OF 5 KR GAMMA RAYS + 0.10% SODIUM AZIDE ALKA AND M.Y.K. ANSARI Published By : Laxmi Book Publication Abstract : So far colchicine has been used to induce polyploidy in various plants. But here
the effect of the combined treatment of 5 kR ã-Rays and 0.10% SA on polyploidy induction
has been obtained in Linum usitatissimum. Out of 300 plants, 9 plants were tetraploid
showing significant superiority over control plants, such as increased height, thickness
of stem, leaf size, capsule and flower size and yield. Chromatin transfer due to cytomixis
and/ or endomitosis due to dissolution of spindle fibre may be responsible for doubling of
chromosomes. Tetraploid plants of Linum having 2n = 4x = 60 chromosomes were
obtained in M2 and M3 generations. This type of mutation breeding makes extensive use
of deviations from the normal characters to improve the characterstics of crops by plant
breeders. Keywords : Article : Cite This Article : ALKA AND M.Y.K. ANSARI, (2013). INDUCTION OF POLYPLOID MUTANT IN LINUM USITATISSIMUM L. BY THE COMBINED ACTION OF 5 KR GAMMA RAYS + 0.10% SODIUM AZIDE. Indian Streams Research Journal, Vol. III, Issue. IV, http://oldisrj.lbp.world/UploadedData/2312.pdf References : - Agarwal R, Ansari MYK. 2001. The effect of Aniline on root tip cells of Vicia faba L. Journal of Cytology and Genetics 2, 129-134.
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