Indian Society of Genetics & Plant Breeding

Isozyme variation in progenies of plus trees of Acacia nilotica (L.) ex Del. ssp. indica (Benth.) Brenan from north-western India

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Acacia nilotica ssp. indica (babuf) is an extremely important
agroforestry species in semi-arid regions of Indian
sub-continent. Genetic variation among 30 progenies of
'plus' trees of this species collected from 3 states of
India, were assessed by esterase and peroxidase isozyme
profiles. Rf value in peroxidase isozyme ranged from 0.02
to 0.12 with 4 bands; while it ranged from 0.05 to 0.32
with 10 bands in esterase. The range of similarity index
varied from 0.214 to 1.000 for the two enzymes. In general,
lesser genetic diversity was observed in the progenies
of plus trees from Gujarat, medium in Uttar Pradesh and
higher in that of Haryana, and there were also some
similarities between certain progenies of the 3 states. The
dendrogram revealed the co-efficient level of 0.53 and
three clusters, i.e. A, Band C with 6, 8 and 16 progenies,
respectively. The study is important for analysis of genetic
diversity between progenies and its further use in
establishment of seed orchards of
Acacia nilotica ssp.

Keywords: Acacia nilotica ssp. indica, plus tree, progeny, esterase, peroxidase


Year: 2007
Volume: 67
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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