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- Author:
- Jones, C.M.; McPhee, C.P.; Ruscoe, I.M.
- Source:
- Aquaculture research 2000 v.31 no.1 pp. 61-67
- ISSN:
- 1355-557X
- Subject:
- agricultural programs and projects, etc ; Cherax quadricarinatus; genetic improvement; strain differences; age; animal breeding; selection criteria; Show all 7 Subjects
- Abstract:
- ... This paper provides a review and summary of strain comparison and selective breeding work carried out on redclaw crayfish Cherax quadricarinatus (von Martens) at the Queensland Department of Primary Industries, Freshwater Fisheries and Aquaculture Centre, Walkamin. Redclaw crayfish are a highly marketable, environmentally tolerant, freshwater crayfish with a moderately fast, but variable growth ra ...
- DOI:
- 10.1046/j.1365-2109.2000.00430.x
-
http://dx.doi.org/10.1046/j.1365-2109.2000.00430.x
- Author:
- Moreau, L.; Lemarie, S.; Charcosset, A.; Gallais, A.
- Source:
- Crop science 2000 v.40 no.2 pp. 329-337
- ISSN:
- 1435-0653
- Subject:
- agricultural programs and projects, etc ; simulation models; plant breeding; economic analysis; loci; phenotype; genetic improvement; artificial selection; genotype-environment interaction; heritability; quantitative traits; selection criteria; genetic markers; crops; Show all 14 Subjects
- Abstract:
- ... The efficiency of molecular markers to improve genetic prediction has been proved by many studies. Nevertheless, the additional cost due to marker genotyping is seldom considered in the comparison between marker-assisted selection (MAS) and phenotypic selection. In the context of plant breeding, the relative cost efficiency of MAS in the first cycle of selection is evaluated through an analytical ...
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- Author:
- St. Martin, S.K.; Futi, X.
- Source:
- Crop science 2000 v.40 no.6 pp. 1559-1564
- ISSN:
- 0011-183X
- Subject:
- agricultural programs and projects, etc ; plant breeding; Glycine max; lodging; selection response; genetic improvement; early development; crop yield; genotype; artificial selection; Show all 10 Subjects
- Abstract:
- ... Multistage testing of genotypes is an essential feature in plant breeding programs. Little research is available to help breeders test efficiently. Our objective was to determine the genetic gain obtained in selected stages of a soybean [Glycine max (L.) Merr.] breeding program and to determine ways to increase the overall gain, if possible. The mean selection differential and genetic gain and the ...
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- Author:
- Gjedrem, T.
- Source:
- Aquaculture research 2000 v.31 no.1 pp. 25-33
- ISSN:
- 1355-557X
- Subject:
- agricultural programs and projects, etc ; Salmo salar; sexual development; interspecific variation; selection response; economic analysis; phenotype; genetic improvement; animal breeding; Oncorhynchus mykiss; age; disease resistance; fish; genetic variation; heritability; domestication; Show all 16 Subjects
- Abstract:
- ... Carnivous fish are two to three times as efficient as pigs and broilers in converting energy and protein to edible food for humans. As the domestication of fish continues, they will become more and more efficient and competitive with these industries. In the future, this will be very important, as more efficient utilization of available food resources is required to supply the growing human popula ...
- DOI:
- 10.1046/j.1365-2109.2000.00389.x
-
http://dx.doi.org/10.1046/j.1365-2109.2000.00389.x
- Author:
- Knibb, W.
- Source:
- Aquaculture research 2000 v.31 no.1 pp. 11-23
- ISSN:
- 1355-557X
- Subject:
- agricultural programs and projects, etc ; selection response; profitability; genes; genetic engineering; animal breeding; strains; marine fish; hybrids; interspecific hybridization; pathogens; genetic improvement; mutation; mortality; fish culture; Mendelian inheritance; selection criteria; Show all 17 Subjects
- Abstract:
- ... Aquaculture industries and research organizations usually fail to exploit genetics as a tool for enhancing productivity and competitiveness. Yet, there is now some awareness among aquaculturists of the benefits from genetics. There remains little consensus about the types of genetic approaches that are most beneficial for the aquaculture industry. Discord arises because genetics comprises many sub ...
- DOI:
- 10.1046/j.1365-2109.2000.00393.x
-
http://dx.doi.org/10.1046/j.1365-2109.2000.00393.x
- Author:
- Casler, M.D.; Fales, S.L.; McElroy, A.R.; Hall, M.H.; Hoffman, L.D.; Leath, K.T.
- Source:
- Crop science 2000 v.40 no.4 pp. 1019-1025
- ISSN:
- 0011-183X
- Subject:
- agricultural programs and projects, etc ; range management; cultivars; plant breeding; genetic improvement; early development; hay; Dactylis glomerata; nutritive value; biomass production; yields; artificial selection; Wisconsin; Ontario; Pennsylvania; Show all 15 Subjects
- Abstract:
- ... There has been considerable activity in breeding orchardgrass (Dactylis glomerata L.) cultivars in North America during the latter half of the 20th century, but little effort devoted to quantification of breeding progress. The objectives of this study were to quantify changes in mean cultivar performance for that time compared with the progress achieved from one cycle of half-sib progeny selection ...
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- Author:
- Casler, M. D.; Vogel, K. P.; Balasko, J. A.; Berdahl, J. D.; Miller, D. A.; Hansen, J. L.; Fritz, J. O.
- Source:
- Crop science 2000 v.40 no.1 pp. 13
- ISSN:
- 1435-0653
- Subject:
- agricultural programs and projects, etc ; breeding; height; plant characteristics; Bromus inermis; genetic improvement; plant breeding; cultivars; soil; crop yield; disease resistance; in vitro digestibility; nutritive value; forage; selection criteria; crop quality; dietary fiber; United States; Show all 18 Subjects
- Abstract:
- ... Since its introduction from Eurasia, smooth bromegrass (Leyss.) has become an important cool-season forage grass in North America. The objective of this study was to document breeding progress in smooth bromegrass between 1942 and 1995 in North America. Thirty cultivars or experimental populations were tested at up to seven sites in the eastern and central USA, with a range of soil types and clima ...
- Handle:
- 10113/27475
- DOI:
- 10.2135/cropsci2000.40113x
-
http://dx.doi.org/10.2135/cropsci2000.40113x
- Author:
- Peel, M.D.; Rasmusson, D.C.
- Source:
- Crop science 2000 v.40 no.5 pp. 1241-1246
- ISSN:
- 0011-183X
- Subject:
- agricultural programs and projects, etc ; germplasm; cultivars; plant breeding; inflorescences; Hordeum vulgare; genetic improvement; crossing; crop yield; plant genetic resources; genetic variation; seed productivity; artificial selection; Minnesota; Show all 14 Subjects
- Abstract:
- ... In mature plant breeding programs an elite core germplasm forms the backbone of the breeding effort, confronting the breeder with the challenge of maintaining germplasm diversity as genetic distance between the elite core germplasm and donor germplasm widens. This research assessed the effects on grain yield of transferring genes from two-row barley (Hordeum vulgare L.) cultivars to a six-row gene ...
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- Author:
- Davis, G.P.; Hetzel, D.J.S.
- Source:
- Aquaculture research 2000 v.31 no.1 pp. 3-10
- ISSN:
- 1355-557X
- Subject:
- agricultural programs and projects, etc ; aquaculture; profitability; monitoring; loci; genetic improvement; inbreeding; Health and Pathology; fish; inheritance (genetics); genetic variation; heritability; selection criteria; shellfish; genetic markers; quantitative traits; Show all 16 Subjects
- Abstract:
- ... Genetic improvement of aquaculture species offers a substantial opportunity for increased production efficiency, health, product quality and, ultimately, profitability in aquacultural enterprises. Technologies exist that can be implemented immediately to improve multiple traits that have economic value, while simultaneously accounting for inbreeding effects. Genetic improvement techniques for deli ...
- DOI:
- 10.1046/j.1365-2109.2000.00438.x
-
http://dx.doi.org/10.1046/j.1365-2109.2000.00438.x
- Author:
- Mandizha, S.; Makuza, S.M.; Mhlanga, F.N.
- Source:
- Asian-Australas. j. anim. sci 2000 v.13 no.7 pp. 883-887
- ISSN:
- 1011-2367
- Subject:
- agricultural programs and projects, etc ; milk protein yield; estimation; heifers; selection response; phenotype; herds; genetic improvement; selection intensity; dairy cattle; milking frequency; milk fat yield; selection criteria; heritability; artificial selection; Zimbabwe; Show all 16 Subjects
- DOI:
- 10.5713/ajas.2000.883
-
http://dx.doi.org/10.5713/ajas.2000.883
- Author:
- Ruotsalainen, S.; Lindgren, D.
- Source:
- Canadian journal of forest research = 2000 v.30 no.4 pp. 596-604
- ISSN:
- 0045-5067
- Subject:
- agricultural programs and projects, etc ; plant breeding; genetic improvement; genotype; seed orchards; genetic variation; breeding value; Show all 7 Subjects
- Abstract:
- ... When structuring a breeding population into sublines, the conventional approach is to assign parents to sublines randomly, so that each subline has approximately the same genetic value. By using deterministic infinitesimal model we study an alternative, stratified sublining system, where sublines are initially formed by positive assortative grouping of parents according to their breeding values. S ...
- DOI:
- 10.1139/x99-245
-
http://dx.doi.org/10.1139/x99-245
- Author:
- Nell, J.A.; Smith, I.R.; McPhee, C.C.
- Source:
- Aquaculture research 2000 v.31 no.1 pp. 45-49
- ISSN:
- 1355-557X
- Subject:
- agricultural programs and projects, etc ; oysters; weight; economic analysis; genetic improvement; triploidy; disease resistance; animal breeding; selection criteria; Show all 9 Subjects
- Abstract:
- ... In 1990, NSW Fisheries initiated a mass selection programme in Port Stephens, NSW, with the aim of breeding faster growing g Sydney rock oysters Saccostrea glomerata (Gould 1850). After two generations of selection, an average weight for age advantage of 18% (range 14-23% per breeding line) was achieved. This equates to a reduction of 3 months in the time taken to reach market size. Experiments ar ...
- DOI:
- 10.1046/j.1365-2109.2000.00387.x
-
http://dx.doi.org/10.1046/j.1365-2109.2000.00387.x