A Comparative Evaluation of Somaclonal, Gamma Ray and EMS Induced Variation in Brassica juncea
Tissue culture induced somaclonal (SC), chemical mutagen EMS (E) and gamma ray (I) induced variation among 269 third generation families in each category generated from a popular variety of Brassica juncea were evaluated for important agronomic traits, namely flowering time, plant height, number of primary and secondary branches, seed yield per plant and per plot. The frequency of somaclonal-lines significantly superior to control was higher than such EMS or irradiated lines, in general. Somaclones also showed higher heritability values. One somaclone, SC-122, is significantly superior to control for upto five traits, simultaneously, demonstrating the practical utility of somaclonal variation in improving productivity.
Key wordsBrassica juncea genetic variation somaclonal variation chemical mutagenesis radiation induced variation
Unable to display preview. Download preview PDF.
- 2.Krishnamurti M, Sugar Breed Newslett, 35 (1974) 24.Google Scholar
- 5.Abraham V, George L & Srinivasan VT, Curr Sci, 57 (1988) 1019.Google Scholar
- 7.Jain SM & Newton RJ, Genome, 30 (1988) 465.Google Scholar
- 8.Eapen S, Abraham V, Gerdemann M & Schieder O, Ann Bot, 63 (1989) 369.Google Scholar
- 9.Jain RK, Sharma OR & Chowdhury JB, Euphytica, 40 (1989) 75.Google Scholar