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Sherington (1985) compared the tranmlrslon of sornaclonal variation In callw derlved (SCl
to SIX) and embryo culture derived (El to E4) generations In wheat. They noted signilicantly
lower grain yield, reduced kemel weight, and shorter height In the X generation than the
embryo derived generation. Cytogenetic variability was observed In tho XI progenies ol a
shorl, partially derlle SCl variant which Included abenant plank -- a haploid, lew aneuploldr,
mixoplolds, multiploidy, spindle abnormales, muHlvalents, bridges and fragments and tillers
having supernumerary spikes wnh branched rachis. Gallba et 01. (1985) studied 97
regenerated winter wheat plank and their progenies. Seventeen ol the X2 families showed
dlerences in various morphdogical traits like plant height, heading date, awns, shoot cdour,
spike morphology, waxiness, sterility and chromosome number and rt~cture as compared to
parental morphology. They observed the degree of sornaclonal varialion to be genotype
dependent. They suggest early variants as well as dwafk to be promising for practical
breeding purposes. In 3 of the sornaclonal families the chromosome number ranged from 41
to 45, while tome plank also contained telocentrics. Maddock and Semple (1986) observed
phenotypic variation in R2 and R3 generations for plant height, loss of awned habt, presence
of scum in the non-awned cuMvars and sterility or reduced fertility. The plants that wereshoder
and darker green in one line RH48 were associated wHh aneuploidy. Quantitative tral
variation was studied in the progeny ot regenerated winter wheal by Chen et al. (1987). They
observed significant among family variation for heading date, plant height, kemel weight, tiller
number, seed yield and fertility. Slgnltlcant varidlon wlthln lamllles was also observed lor all
dependent variables except plant height cmd kernel weight. Although much d the vatialion
was ol negatlve value, some d the lines were seen to excoed the control for most d the
variables examined. Cyfologlcal studies lndlcated 65% d tho totol population to be
cytdogically normal. Some d the varlanh wereortoc1at.d with cytologkal abnortwlliieslike
anwplokis, unlvalenk, chrornorme breakage etc. Slgnlkmt quantitalive tral vakrH0n was
also observed by Ryan et 01. (1987) for all charaden measured -- plant height, grdn numbOI