Indian Society of Genetics & Plant Breeding

Induced mutations in chickpea (Cicer arietinum L.) VI. Significance of induced altered correlations

Published on

Populations of desi (G 130, H 214), kabuli (C104) and
green seeded type (L 345) chickpea mutagenised through
gamma rays (400, 500 & 600 Gy), fast neutrons (5, 10
and 15 Gy), N-nitroso-N-methyle urea (NMU) 0.01% (20h)
and 0.02% (8h) and ethylmethane sulphonate (EMS) 0.1%
(20h) and 0.2% (8h) were evaluated for induced magnitude
and directional changes in the associations and
correlations in M3 generation. Correlation studies for all
the 21 possible associations among seven characters in
3 showed clearly that the mutagenic treatments have
succeeded in generating more favourable associations
between various components of yield. Several highly
significant directional changes towards desirable side were
induced in correlation coefficients of character pairs in
the mutagen treated populations. The magnitude and
direction of change induced by a particular treatment
varied according to variety and the mutagen used.
Correlation analysis showed that grain yield was strongly
associated with number of grains/plant, number of
grains/pod, 100 seed weight and harvest index. The results
also indicated that some of the undesirable negative
correlations among yield components were not only broken
but were changed significantly into desirable positive
ones. Some of the undesirable negative correlations among
yield components existing in control populations viz.,
grain yield/plant vs. biological yield/plant and number of
pods/plant and number of grains/plant vs. biological
yield/plant, have been significantly weakened or decreased

Keywords: Chickpea, induced mutations, correlations, micro-mutations, mutagens


Year: 2003
Volume: 63
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



Download PDF