Pak. J. Bot., 37(1): 61-69, 2005. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
GENETIC DIVERGENCE IN LENTIL GERMPLASM FOR BOTANICAL DESCRIPTORS IN RELATION WITH GEOGRAPHIC ORIGIN TAYYABA SULTANA, ABDUL GHAFOOR* AND MUHAMMAD ASHRAF
Abstract: Three hundred and seventeen accessions of lentil collected from all
over the country were characterized for stem colour, pedicle colour,
growth habit, tendrils, hairiness, leaf pubescence, leaflet size, pod
pigmentation, pod indehiscence, presence/absence of beak, seed coat
colour, seed coat pattern, seed coat pattern colour and cotyledon colour.
Out of these accessions, 76 were heterogeneous that needs to evaluate
carefully to isolate pure lines. Inter and intra-accession variation
indicated the presence of local wealth for lentil that is yet needed
to collect, therefore further exploration missions are suggested to
collect germplasm from remote areas of NWFP, NA and Baluchistan with
maximum emphasis to interiors rather than closer to motorable roads.
High variability was observed for growth habit, leaf pubescence, leaflet
size, seed coat colour, seed coat pattern and seed coat pattern colour
that could be expanded and exploited for developing breeding material
and to use for Marker Assisted Selection. Though clusters analysis grouped
together accessions with greater genetic similarity, the cluster did
not necessarily include all the accessions from same origin. Low level
of association between genetic diversity and geographic distribution
is expected to be due to less representation of accessions from particular
area that is needed to be studied uniformly. Department of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
Plant Genetic Resources Programme, National Agricultural Research
Centre, Islamabad, Pakistan. |
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