The management of rice genetic resources

Genome ◽  
1989 ◽  
Vol 31 (2) ◽  
pp. 825-831 ◽  
Author(s):  
T. T. Chang

Rice growers and researchers are endowed with an enormously rich germ plasm of pantropical distribution, mostly conserved before serious genetic erosion sets in. Efficient management of the conserved resources and effective use of the diverse gene pools justify arduous and costly investments in conservation. A sound conservation system requires adequate field space for seed increase and rejuvenation, cost-efficient and secure storage facilities, a database management system, availability of conserved materials and related information to users, and vigilant monitoring of seed viability. Linkage with evaluators, breeders, and biotechnologists is essential for full use of the conserved materials. Periodic consultation with specialists will extend a collection's usefulness, through further collection or re-collection of germ plasm and in situ conservation, compatibility of documentation systems, and enhanced interinstitutional and international collaboration. Training of germ-plasm workers should be part of the management system. The continuity in human resources will provide security, their dedication will ensure service, interdisciplinary communication will promote use. Improving the capability of national genebanks augments the security of collections preserved at duplicate sites. Gene-bank management must be sustained by adequate administrative and financial support. An effective public information program will further ensure support and security.Key words: rice, Oryza sativa, genetic resources, genetic conservation, gene-bank management.

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 498b-498
Author(s):  
Winthrop B. Phippen ◽  
James R. McFerson ◽  
Stephen Kresovich

Genetic variation and relationships in genetic resources collections can be assessed using molecular genetic markers. We examined the applicability of the RAPD assay for quick, cost-effective, and reliable use in improving collection management. Fourteen accessions of Brassica oleracea spp. capitata `Golden Acre' (cabbage) were screened using nine decamer oligonucleotide primers. We obtained 110 reproducible fragments, of which 80 were polymorphic, ranging in size from 370-1730 bp. Individual accessions were readily distinguished. A cluster analysis of genetic distances generated by bootstrapping reflected all known genetic relationships, except one. Bulking strategies were also investigated. RAPD markers can be applied to gene bank management to measure variation, identify accessions, and establish genetic similarity at the intra-specific level addressing the needs of both curators and users.


Author(s):  
Asya Stoyanova-Doycheva ◽  
Emil Doychev ◽  
Stanimir Stoyanov ◽  
Asya Toskova

Diversity ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 358
Author(s):  
Olfa Saddoud Deddabi ◽  
Cinzia Montemurro ◽  
Sihem Ben Maachia ◽  
Fathi Ben Amar ◽  
Valentina Fanelli ◽  
...  

Tunisia is one of the world’s largest producers of olive oil, and it preserves pools of olive genetic diversity that are still unexplored. A recent prospection and collection program of the National Gene Bank of Tunisia (NGBT) focused on the vast oasis of Degache, in the south west part of Tunisia, where 47 samples were collected and genetically characterized through simple sequence repeat (SSR) markers. Identification and authentication of genotypes were obtained through comparison with reference cultivars belonging to the Olive National Collection of Tunisia (IOC) and with cultivars from Algeria, Italia, Syria and Lebanon. Degache olive genotypes showed large genetic variability, a significant diversity from the reference germplasm, and a clear differentiation from modern varieties. The population structure analysis identified four gene pools characterizing genotypes from different area of origin. Two gene pools appear to be more represented in germplasm from southern Tunisia, where environmental conditions at critical plant development phases, are harsher. This suggests that this germplasm might present traits of adaptation useful for breeding to improve resilience to abiotic stresses. Our results will support ex situ and in situ conservation activities of Tunisian olive germplasm pursued by the National Gene Bank of Tunisia.


2009 ◽  
Vol 10 (1) ◽  
pp. 33 ◽  
Author(s):  
Mario Lobo Arias ◽  
Clara Inés Medina Cano

<p>El crecimiento poblacional y los cambios en el entorno requieren de la disponibilidad de diversidad genética para el desarrollo de sistemas de producción sostenibles, eficientes y competitivos. Esto implica colectar, conservar y conocer los atributos de las poblaciones en mantenimiento de especies de valor actual y taxones relacionados, al igual que entidades biológicas con potencial de desarrollo, lo cual cobra importancia dada la creciente erosión genética. Esto plantea la necesidad de estrategias complementarias de conservación ex situ e in situ, dando prioridad a la variabilidad genética a ser incluida en el proceso, debido a los costos de mantenimiento, y considerar factores no sólo económicos sino también sociales, así como los limitantes actuales para acceder a la diversidad internacional. Este artículo presenta una revisión sobre la importancia de la conservación de los recursos genéticos vegetales, animales y de microorganismos de la agrobiodiversidad, e incluye una discusión y algunos aspectos requeridos para la priorización de taxones y tipo de materiales que se deben incluir en el proceso. Para ello, se parte de la premisa de que la conservación de la diversidad genética sirve para la realización de procesos de valor agregado y de utilización posterior.  </p><p> </p><p><strong>Agrobiodiversity genetic resources conservation for the development of sustainable production systems</strong>  </p><p>Human population growth and environmental changes require the availability of genetic diversity for the development of sustainable, efficient and competitive production systems. This means collection, conservation and characterization of the attributes present in the genetic resources of current important taxa and wild related, and promising species with development potential, which is magnified for a current genetic erosion. It requires complementary ex situ and in situ conservation strategies as well as prioritization of the diversity to be included in the process, due to the conservation costs, considering not only economic values, but also social aspects and the access limitations to genetic resources at international level. The current paper includes a revision related to the importance of the conservation of the plant, animal and microorganisms genetic resources, concerned to agrobiodiversity, with some discussion related to this topic, as well as aspects to be considered for the priorities of species and type of materials to be conserved. For such purpose, the premise is that such diversity, after added-value processes, could be used for the development of sustainable agricultural production systems. </p>


1996 ◽  
Vol 35 (01) ◽  
pp. 52-58 ◽  
Author(s):  
A. Mavromatis ◽  
N. Maglaveras ◽  
A. Tsikotis ◽  
G. Pangalos ◽  
V. Ambrosiadou ◽  
...  

AbstractAn object-oriented medical database management system is presented for a typical cardiologic center, facilitating epidemiological trials. Object-oriented analysis and design were used for the system design, offering advantages for the integrity and extendibility of medical information systems. The system was developed using object-oriented design and programming methodology, the C++ language and the Borland Paradox Relational Data Base Management System on an MS-Windows NT environment. Particular attention was paid to system compatibility, portability, the ease of use, and the suitable design of the patient record so as to support the decisions of medical personnel in cardiovascular centers. The system was designed to accept complex, heterogeneous, distributed data in various formats and from different kinds of examinations such as Holter, Doppler and electrocardiography.


1999 ◽  
Author(s):  
V.G. Ivensky ◽  
A. Olesen ◽  
T. May ◽  
L. Sroka ◽  
A. Pellegrino

1995 ◽  
Vol 32 (4) ◽  
pp. 677
Author(s):  
M J Shin ◽  
G W Kim ◽  
T J Chun ◽  
W H Ahn ◽  
S K Balk ◽  
...  

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