Characterisation of european varieties of triticale with emphasis on plant phytase contributing to P availability to chickens

absen

Diversity of Seven Glutenin and Secalin Loci within Triticale Cultivars Grown in France

Although the endosperm storage protein of hexaploid triticale have already been analysed, the allelic diversity of glutenins and secalins remains to be described. Analysis by SDS-PAGE of the majority of hexaploid triticales (69 cultivars) grown in France allowed to identify 36 alleles at seven loci: Glu-A1, Glu-B1, Glu-R1, Gli-R2, Glu-B2, Glu-A3 and Glu-B3. Glu-B1 and Glu-B3 loci were the most polymorphic with 9 alleles each. On the basis of allelic frequencies at the seven loci, genetic distances between hexaploid triticales grouped according to their origins revealed two groups: winter triticales mostly originating from European germplasm and spring triticales essentially of CIMMYT origin. Comparison of allele frequencies between hexaploid triticale cultivars and a world collection of bread (Triticum aestivum) and durum (Triticum durum) wheat was investigated at Glu-A1 and Glu-B1: only a significant association was found for Glu-A1 alleles (?2 = 2.26, p =0.36) between triticale and bread wheat

La fitasa vegetal del triticale mejora la disponibilidad del fosforo

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Identification of wheat Pm genes efficient against triticale powdery mildew

International audienc

Triticale powdery mildew: population characterization and wheat gene efficiency

Triticale powdery mildew: population characterization and wheat gene efficienc

Use of intergeneric crosses in cereals and in particular for increasing the genetic diversity of triticale

Use of intergeneric crosses in cereals and in particular for increasing the genetic diversity of triticale. 9. International Triticale Symposiu

Utilisation du triticale dans l'alimentation du poulet : estimation de l'efficacité de la phytase végétale pour améliorer la disponibilité du phosphore

Session : NutritionFive varieties of triticale were grown under similar conditions. Phytase activity (1012 to 2146 PU / kg) displayeda significant genotypic effect. The efficacy of plant phytase to improve phosphorus (P) availability was assessedin chickens up to 3 weeks of age in twelve experimental diets: three maize (45%) and soybean meal (23%)based diets with 0, 1 or 2 g P / kg as monocalcium phosphate (MCP) and nine diets with no MCP in whichtriticale (45%) from four varieties, heated or not (including one partially heated), replaced maize. Phytaseactivity in the triticale based diets ranged between 135 to 1390 PU / kg. Growth performance and bone ash wereresponsive to plant phytase and to MCP. Non linear models of these responses were adjusted with the best fit forbone ash parameters. 250, 500 and 1000 PU of plant phytase were estimated to be equivalent to 0.46, 0.68 and0.81 g P as MCP, respectively. Introducing 45% of triticale in a plant feedstuffs based diets increases its phytaseactivity by 455 to 966 PU / kg and, in turn, prevents the supplementation of 0.6 to 0.8 g of P as MCP / kg diet.Cinq variétés de triticale ont été cultivées dans des conditions identiques. L’analyse de l’activité phytasique(1012 à 2146 UP / kg) révèle un effet de la variété sur l’activité de cette enzyme. L’efficacité de la phytasevégétale pour améliorer la disponibilité du phosphore (P) a été étudiée chez des poulets élevés jusqu’à troissemaines d’âge. Douze aliments ont été comparés : trois aliments à base de maïs (45%) et de tourteau de soja(23%) supplémentés avec 0, 1 ou 2 g de P sous forme de phosphate monocalcique (PMC) et neuf aliments sansPMC dans lesquels le maïs était remplacé par du triticale, provenant de quatre variétés, chauffé ou non (dont unlot partiellement chauffé). L’activité phytasique dans les aliments à base de triticale était de 135 à 1390 UP / kg.Les performances de croissance ont été améliorées et la teneur en cendres des os a augmenté avec la teneur en Pdes aliments à base de maïs et avec l’activité phytasique des aliments à base de triticale. Des modèles nonlinéaires, ajustés à ces réponses, ont permis d’établir que 250, 500 et 1000 unités de phytase végétale sontéquivalentes à respectivement 0,46 ; 0,68 et 0,81 g de P sous forme de PMC. Ces équivalences signifientqu’introduire 45% de triticale dans un aliment pour poulet permet d’augmenter l’activité phytasique de 455 à966 UP / kg et ainsi permet de réduire la supplémentation de P sous forme de PMC de 0,6 à 0,8 g / kg d’aliment

Renforcer les résistances du triticale à la fusariose par l’intégration de leviers génétiques et agronomiques

Renforcer les résistances du triticale à la fusariose par l’intégration de leviers génétiques et agronomiques. Séminaire du Comité Scientifique du CTP

Characterisation of European varieties of triticale with special emphasis on the ability of plant phytase to improve phytate phosphorus availability to chickens

absen

Viscosity of triticale varieties differs in its response to temperature after flowering

Triticale produced to feed monogastric livestock needs to have a low potential applied viscosity (PAV). Five varieties were cultivated at nine locations (430-700 m a.s.l.) in Switzerland over three years. Six of the locations were sampled for at least two consecutive years, and PAV was related to meteorological data. The data was subjected to correlation and regression analysis, as well as a multiplicative model, to evaluate interactions. Extent and stability of PAV differed between experimental locations across all genotypes, notably between varieties and years, but also between single locations in the same year. Interactions between genotype and environment were responsible for up to 12% of the PAV variance. With the exception of one variety, PAV was negatively correlated with the cumulated mean temperatures over a 20-day period, starting on day 24 after heading. In these cases, temperature data explained the differences in PAV much better than precipitation did. By linear regression, PAV could be predicted from mean temperature during grain development and grain hardness at harvest for the four thermosensitive varieties. Two varieties were of particular interest, as they had either a favorably low PAV (Tridel) or a PAV resistant to environmental influences (Prader). A combination of these two traits could be used to create a type of triticale particularly suitable for livestock feeding