Aquaculture genetics research and issues in INGA member countries/institutions

The information presented here is extracted from the presentations and discussions at the Sixth Steering Committee Meeting of the International Network on Genetics in Aquaculture (INGA) held in Hanoi, Vietnam on 8-10 May 2001. The main topics discussed were: review of genetics research progress and planned activities in member countries and Associate Member institutions; genetics improvement technologies; strategies and action plans for distribution of improved fish breeds to small-scale farmers; ecological risk assessment for genetically improved fish breeds; methods for monitoring the uptake of improved strains and impact assessment; and network activities and collaborations.

Ciclo II de seleção na população de milho CMS 52 no nordeste brasileiro.

1998

Ciclo XII de seleção entre e dentro de progênies de meios-irmãos na variedade de milho BR 5011 sertanejo.

1998

Ciclo II de seleção entre e dentro de progênies de meios-irmãos na população de milho CMS 453.

1998

Ciclo XI de seleção entre e dentro de progênies de meios-irmãos na variedade de milho BR 5028 - São Francisco.

1998

The genetics, breeding and improvement of corn and cotton; a bibliography covering more than forty years work (1889-1929) in the breeding, improvement, and study of inheritance in corn and cotton (with many abstract references)

Cover title.

The genetics, breeding and improvement of corn : a bibliography covering more than forty years work (1889-1929) in the breeding, improvement, and study of inheritance in corn, with many abstract references /

Includes index.

Principles of commercial poultry breeding; a semi-technical account of recent developments in genetics applied to breeding for the improvement of economic traits in poultry. For the breeder, the hatcheryman, and the commercial poultryman.

Mode of access: Internet.

A bibliography on forest genetics and forest trees improvement, 1956-1957 /

Includes index.

A bibliography on forest genetics and forest tree improvement, 1958-59 /

Includes index.

Forest genetics in the Lake States; an annotated bibliography prepared for the Subcommittee on Bibliography and Directory, Lake States Forest Tree Improvement Committee.

"Based upon earlier bibliographies compiled and freely made available by Scott S. Pauley, A.J. Riker, P.W. Robbins, and Stephen H. Spurr."

Intron-mediated improvement of a selectable marker gene for plant transformation using Agrobacterium tumefaciens

In binary vectors, the antibiotic resistance gene used for selection of transformed plant cells is also usually expressed in the transforming Agrobacterium cells. This expression gives the bacterium antibiotic resistance, an unnecessary advantage on selective medium containing the antibiotic. Insertion of a castor bean catalase-1 (CAT-1) gene intron or a Parasponia andersonii haemoglobin gene intron into the coding region of the selectable marker gene, hph, completely abolished the expression of the gene in Agrobacterium, rendering it susceptible to hygromycin B. Use of these modified binary vectors minimized the overgrowth of Agrobacterium during plant transformation. Both of the introns were correctly spliced in plant cells and significantly enhanced hph gene expression in transformed rice tissue. The presence of these introns in the hph coding sequence not only maintained the selection efficiency of the hph gene, but with the CAT-1 intron also substantially increased the frequency of rice transformation. Transgenic lines with an intron-hph gene generally contained fewer gene copies and produced substantially more mRNA of the predicted size. Our results also indicate that transgenic plants with many copies of the transgene were more likely to show gene silencing than plants with 1-3 copies.