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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.

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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

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