Even more remarkable than 'Triumph's acceptance level was its development. Yield potential and genetic gain in water-limited environments. Enzymes in sprouted or lma-affected grain. The use of Al-tolerant cultivars reduces the impact of this problem and is common to the southern Great Plains where wheat is managed as a dual-purpose crop. Our results suggested that 37. Winter wheat Triticum aestivum L.
Genetic improvement of A1 tolerance is one of the most cost-effective solutions to improve wheat productivity. The favorable alleles in each accession ranged from two to eight with an average of 5. Positional cloning of flowering time genes in wheat. Abstract Wheat powdery mildew, a globally important disease caused by the biotrophic fungus Blumeria graminis f. Plants were grown for 28 days in two different sized pots and analyzed for biomass and total P concentration.
Wheat quality factors are critical in determining the suitability of wheat Triticum aestivum L. Evaluation techniques for feedstock and co-product quality. Association with other disease resistance genes. Biology, plant damage, and control methods. The deployment of resistance sources identified in this study in wheat breeding may greatly broaden the genetic base of powdery mildew resistance. Both additive and dominance genetic ef- fects were detected for most of the 17 traits, but dominance effects usually prevailed over additive effects.
We hypothesized that a grazing system may be applied as a selection tool during the early inbreeding generations to shift gene frequencies in favor of improved grazing tolerance and grain yielding ability. Case study: What defines diverse environments. Selection for wheat quality in breeding. Producers in the southern Great Plains usually dedicate fields of winter wheat Triticum aestivum L. Although genetic resistance is used to help control tan spot, few commercial lines in the southern Great Plains contain highly effective resistance. Methods to assess genetic variation.
Dough quality and polypeptide composition. The objective was to differentiate and estimate phosphorus P -uptake and P-utilization efficiency among several winter wheat accessions. A review of 15 earlier studies until the late 1990s gave median yield heterosis values of about 12% compared to reference cultivars Mahajan et al. Our study demonstrated that the estimates of population structure between spring and winter wheat lines can identify genomic regions harboring candidate genes involved in the regulation of growth habit. Concomitant transcriptional profiles of flowering time genes.
However, their use for identi- fication of alleles in Chinese wheats is restricted due to the susceptibility of the all seven alleles in China. Physical mapping in hexaploid wheat. Yield trend analysis of hybrid and line cultivars in the Great Plains over 28 years evidenced higher genetic gain of hybrid cultivars, however, without higher yield stability Koemel et al. Means black bars and 95% confidence intervals grey bars of log probability of data Ln Pr X K for each value of K were calculated from 10 independent runs of Structure with 100,000 burn-in steps and 106 simulation steps. During the first field season, larval and pupal numbers were evaluated for each wheat entry; due to inclement weather, yields could not be determined.
Phenotypic expression of the vrn-A1a allele of Jagger was more sensitive to the year of measurement of stem elongation than that of the vrn-A1b allele of 2174. Correlations between the marker and the disease rating were highly significant 0. To understand the mechanisms of aluminum Al tolerance in wheat Triticum aestivum L. Large kernel size and superior yielding ability reflect Billings' resistance to diseases prevalent in Oklahoma and surrounding states. Key Features: Provides an up-to-date authoritative reference on a globally consumed and produced cropFocuses on the most economically significant production constraints and impactsIncludes interconnecting sections on the wheat plant, crop, cultivar, and industryIncludes chapters from a world-wide team of leading expertsProvides concise summaries for each chapter and perspectives on emerging research areas Foreword. Averaged across environments and years, grazing reduced wheat grain yield by 7% when both grazed and nongrazed plots were sown early to encourage lush forage growth. The short-lived nature of leaf rust resistance Lr genes necessitates a continuous search for novel sources of resistance.
Wheat reaction to Al was measured by relative root growth and root response to hematoxylin stain in nutrient-solution culture. With regard to the non-polar fraction, the significant effect of G Â T Â Y on fatty alcohols, and especially on those of high molecular weights polycosanols is of interest, and was also reported by Chen et al. Grain was hand-harvested in June of each year from the same rows harvested for forage. Genetic loci regulating plant development processes. The original occupant of the Chair was Edward L. Determination of midseason N rate.