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71.
72.
L.W. Katunda Y. Bouquet J. Tahon A. Van de Weghe 《Biochemical Systematics and Ecology》1985,13(2):179-181
In plasma of the European starling (Sturnus v. vulgaris L.), genetic variation was detected by polyacrylamide gel electrophoresis. Two esterase zones, of which one is polymorphic, had already been described earlier. In addition to these two zones (Es-1 and Es-3), we describe a third (Es-2) that also showed variations. The distribution of the phenotypes observed in the Es-2 zone closely fits the expected distribution according to the law of random mating so that the polymorphism of Es-2 is hereditary. This Es-2 locus is postulated to be a codominant system, controlled by two alleles. 相似文献
73.
Jamila Chaïb Laurent Torregrosa Don Mackenzie Pat Corena Alain Bouquet Mark R. Thomas 《The Plant journal : for cell and molecular biology》2010,62(6):1083-1092
A grapevine model system is described that is suitable for rapid forward and reverse genetic studies in small controlled environments. It is based on the Vvgai1 mutant allele that confers a dwarf stature, short generation cycles and continuous flowering (‘microvine’). Black and white berry microvine genotypes were developed that can be transformed by Agrobacterium tumefaciens. Near‐homozygous lines were created for efficient bi‐allelic single nucleotide polymorphism (SNP) marker mapping and mutagenesis studies. A genetic mapping strategy based on picovine‐derived microvine progeny populations was used to rapidly phenotype and map the flower sex and fleshless berry loci and identify a new lethal recessive locus, Vvlrl1. The microvine provides a unique model system for rapid genetic studies of grapevine by changing the perennial long life cycle of the plant to one with features and advantages similar to an annual plant. 相似文献
74.
Evidence is presented for close genetic linkage between the structural loci for serum albumin and the vitamin D binding protein (Gc) in Belgian Blue and White cattle. Five recombinants were observed in a total of 342 informative offspring. The recombination frequency between the two loci was estimated as 1.5% +/- 0.9. The observed distribution of the haplotypes deviated from the expected one in the population, probably due to selection and significant linkage disequilibrium. 相似文献
75.
In a previous study, we have shown that the cryopreservation of mouse oocytes caused increases in the rates of degeneration and of digynic polyploid embryos, while the fertility of frozen-thawed oocytes was decreased. In this study, we have attempted to determine the different stages in the complete freezing-thawing process which are deleterious for the oocytes and the subsequent zygotes. IVF assays showed that DMSO decreased the fertility of oocytes, whereas cooling to 0°C had no effect. DMSO, used at 0°C, was less deleterious for oocytes. Thus, the prefreezing manipulations seem to be important for the quality and fertility of oocytes. However, neither DMSO nor cooling increased the incidence of chromosomal abnormalities in embryos obtained from inseminated exposed oocytes. Therefore, the increased frequency of polyploidy observed in embryos after the cryopreservation of mouse oocytes must correspond to disruption occurring during the freezing-thawing process. 相似文献
76.
77.
Luc J. Peelman Alex R. Van de Weghe Wouter R. Coppieters Alex J. Van Zeveren Yves H. Bouquet 《Immunogenetics》1992,35(4):286-289
The nucleotide sequence data reported in this paper have been submitted to the GenBank nucleotide sequence database and have been assigned the accession number M69100. 相似文献
78.
The inheritance of a new D system red cell antigen, factor 22, is described. It has also been possible to discriminate more efficiently between D system pheno-groups enabling genotypes to be identified from phenotypes in the majority of cases. This improves the accuracy of animal identification and gene frequency estimates. 相似文献
79.
Agnès Doligez Yves Bertrand Sonia Dias Michel Grolier Jean-François Ballester Alain Bouquet Patrice This 《Tree Genetics & Genomes》2010,6(3):413-422
Fertility (number of inflorescences per shoot) is a trait of major importance for grapevine breeding. We present and compare
the results of quantitative trait locus (QTL) detection for fertility in two table grape progenies, MTP3140 and MTP3234. Novel
parental and consensus maps were built for MTP3140. We found a main QTL on linkage group (LG) 5 in both progenies, which was
also the most stable one across years. It explained up to 18.5% of the total intra-cross phenotypic variance. Three other
QTLs, one on LG 5 and two on LG 14, were repeated over years but were found in a single progeny. Our results suggest that
QTLs effect was mainly additive. The prospects for testing candidate genes are discussed as well as the potential interest
of these results for marker-assisted selection. 相似文献
80.
H Varewyck C Renard B Kristensen Y Bouquet M Vaiman A Van de Weghe A Van Zeveren 《Animal genetics》1990,21(1):59-68
Eighty anti-SLA class I reagents were prepared resulting from skin graft and subcutaneous immunizations in 320 fattening pigs of the Belgian Landrace and Pietrain breeds. By means of these alloantisera seven internationally and five locally established specificities were recognized. Three of the locally assigned specificities were new: BM 36, BM 37 and BM 38. They were serologically and genetically defined. The typing battery was completed with French and Danish reagents, and correlation coefficients were calculated for the main alloantisera recognizing SLA class I alloantigens observed in the Belgian breeds. The SLA haplotype frequencies were estimated in 372 Belgian Landrace and 369 Pietrain pigs. The SLA haplotype distribution differs significantly between both breeds and the genetic distance (0.54) at the SLA system is quite high. 相似文献