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Wheat Information Service
Number 90:55-56 (2000)
Information
PRELIMINARY INFORMATION
Genetic C Collections, Isogenic and
Alloplasmic Lines (International Conference)
Tentative date: July-August 2001
Location: Institute of Cytology and Genetics SB RAS, Novosibirsk,
630090, Russia
Working languages: English and Russian
Address for correspondence: Dr. Sergey F. KOVAL, Institute of
Cytology and Genetics SB RAS, 630090, Novosibirsk, RUSSIA. Tel:
(383-2) 33-34-62; Fax: (383-2) 33-12-78; E-mail:
kovalvs@bionet.nsc.ru
Any genetic collections (testers on individual genes, substitution,
near-isogenic, or alloplasmic lines) are of great value not only with
respect to gene pool preservation, but also as model objects for
studying gene-genotype or plasmon-genome interactions. Near-isogenic
lines are used for genome molecular mapping and as testers in genetic
analysis. Substitution and alloplasmic lines have become an
indispensable tool in studies of phylogeny and systematics. CMS
effects have found a wide application in practical breeding. Abundant
information on alteration of nuclear gene manifestations under the
plasmon effect has been accumulated.
However, numerous methodological questions on forming, maintaining,
and using genetic collections (including isogenic and alloplasmic
lines) require further discussing. There are no agreement on the
similarity extent of the genotypes of recurrent parent and
backcrossed lines. The remains of donor genetic material hinder the
assessment of the phenotypic effect of either marker genes or
cytoplasm. Worldwide banks of both data continuously maintained
genotypes of tester, substitution, isogenic and alloplasmic lines are
waiting to be formed. The existing material is dissolved in
international and national gene pools, which are mainly of practical
breeding importance. These and many other unsolved questions require
a discussion by interested researchers.
The Institute of Cytology and Genetics, Siberian Branch of the
Russian Academy of Sciences, is involved in developing and
investigating of substitution and near-isogenic lines. Twice, it
organized the All-Union (USSR) Conferences on Genetic Collections,
Isogenic and Alloplasmic Lines. These Conferences aided the
information and material exchanges between the participants. Most
interesting works presented were published in a volume on isogenic
lines and three volumes on genetic collections.
Now, the Institute of Cytology and Genetics is planning to organize
an international conference to discuss all these topics.
Would you, please, inform us on whether you are interested in
participation in this Conference and publication in its
proceedings.
We need to determine the number of possible participants of the
Conference and would be very grateful for your advice on other
scientists to be addressed with this Preliminary Information. Any
comments or additions to the tentative program are welcome.
We propose to discuss the following topics:
1. Maintenance of genetic collections (as plants and tissue cultures;
seed storage), their reproduction, nomenclature, and principles of
their forming.
2. Databases (data storage, processing, and exchange).
3. Isogenic and substitution lines: use in gene molecular mapping,
studies of marker phenotypic manifestations, and utility for genetic
analysis of multiple markers.
4. Alloplasmic lines: plasmon-genome interactions, CMS, and use in
phylogenetic and systematic studies.
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