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Wednesday, May 20, 2020 | History

2 edition of Genetic fine structure analysis of the waxy locus in barley (Hordeum vulgare) found in the catalog.

Genetic fine structure analysis of the waxy locus in barley (Hordeum vulgare)

Jeffrey Lewis Rosichan

Genetic fine structure analysis of the waxy locus in barley (Hordeum vulgare)

by Jeffrey Lewis Rosichan

  • 95 Want to read
  • 9 Currently reading

Published .
Written in English

    Subjects:
  • Barley -- Genetics.,
  • Barley -- Breeding.

  • Edition Notes

    Statementby Jeffrey Lewis Rosichan.
    The Physical Object
    Paginationix, 39 leaves ;
    Number of Pages39
    ID Numbers
    Open LibraryOL16437716M

      Molecular Analysis of xantha-g Mutants. The barley mutants xantha-g 28, -g 37, -g 44, -g 45, and -g 65 are recessive and lethal, and they accumulate protoporphyrin IX upon feeding with the chlorophyll biosynthetic precursor 5-aminolevulinic acid. Their ability to form chlorophyll has been analyzed (Henningsen et al., ).At low intensities of light, the leaky xantha-g 45 mutant is capable   Analysis of dominance and interaction between the two major Vrn loci in barley and wheat shows that they display similar interactions, with spring alleles epistatic to winter alleles in both species. Barley also possesses a third locus, VRN-H3, originally mapped to chromosome 1H by linkage to morphological markers (Takahashi and Yasuda, ).

    Genetic diversity in the amylose (e.g., % in Moemoe to % in Turaekuri) and phosphorus ( mg/ g in Turaekuri to mg/ g in Kowiniwini) contents as well as the molecule structure of the starches (e.g., external chain length of amylopectin ranged from glucosyl residues in Turaekuri to glucosyl residues in Karuparera   Temperature during the growing season is a critical factor affecting grain quality. High temperatures at grain filling affect kernel development, resulting in reduced yield, increased chalkiness, reduced amylose content, and poor milling quality. Here, we investigated the grain quality and starch structure of two japonica rice cultivars with good sensory properties grown at different

    Molecular mapping and genetic fine-structure of the rym5 locus encoding resistance to different strains of the barley yellow mosaic virus complex. Theor. Theor. ://   Although maize (Zea mays) retrotransposons are recombinationally inert, the highly polymorphic structure of maize haplotypes raises questions regarding the local effect of intergenic retrotransposons on recombination. To examine this effect, we compared recombination in the same genetic interval with and without a large retrotransposon cluster. We used three different bz1 locus


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Genetic fine structure analysis of the waxy locus in barley (Hordeum vulgare) by Jeffrey Lewis Rosichan Download PDF EPUB FB2

Genetic fine structure analysis of the amylose-extender locus in Zea tnays L. Induction of waxy starch mutant in rice. Induction of wx mutant in an inbred line of maize. Interaction ofthe amylose-extender and waxy mutants ofmaize. () The waxy locus in barley and maize which controls starch deposition has been characterized genetically and methods have been developed for pollen screening and mutant detection.

At Washington State University a waxy pollen system is being developed in barley for in situ mutagen monitoring. Genetic fine structure analysis of thewaxy locus in However, previous studies on other starches showed that the influencing factors include amylose content, amylopectin fine structure, granule morphology, minor components, and so on (Doublier ; Zhu and others ).

Again, there is a dearth of information on the effect of internal and cluster structure on the rheology of barley :// The ancestral allele of rice Waxy gene, Wxlv, was identified, which dramatically affects the mouthfeel of rice grains by modulating the size of amylose molecules.

The Wxlv allele originated directly from wild rice and played an important role during artificial selection and domestication of grain quality ://(19) The waxy (wx) locus of Zea mays L.

encodes a granule-bound starch synthase (GBSS I = waxy protein) required for the synthesis of amylose in endosperm and pollen grain. This review covers recent advances in understanding the waxy locus in maize, focusing particularly on the new information on mutant type and mutation mechanisms.

The results showed that the insertion and deletion played an   Abstract: Waxy (Wx) gene is the key gene for glutinous trait in many waxy crops including waxy maize. Wx diversity investigation in maize population has important significance for quality breeding and germplasm utility of Chinese waxy maize.

In this study, waxy maize germplasm accessions ( from China, 11 from Thailand and five from South Korea) were used to investigate their wx geno t The M1-a disease reaction locus is one of a set of loci which define the response of barley to Erysiphe graminis f.

hordei, the causal agent of the powdery mildew experiments to define the genetic fine structure of this locus, F 3 families with susceptible variants were recovered, from a cross between two resistant lines, at an unusually high frequency (Wise and Ellingboe, ).

The genetic structure of spring barley cultivars was analyzed using Structure Waxy locus associating to amylopectin in the present GWAS was earlier mapped between markers synthase-like genes in transgenic barley increases the levels of cell wall (1,3;1,4)-beta-d-glucans and alters their fine structure.

Plant Biotechnol. Barley (Hordeum vulgare), first domesticated in the Near East, is a well-studied crop in terms of genetics, genomics, and breeding and qualifies as a model plant for Triticeae advances made in barley genomics mainly include the following: (i) rapid accumulation of EST sequence data, (ii) growing number of studies on transcriptome, proteome, and metabolome, (iii) new modeling Barley is used for a wide range of traditional and novel end-uses (Edney ; Sparrow et al., ).

In most countries, the major portion of barley is fed to animals, particularly cattle and ://   We isolated the entire sequence of the coding region of Waxy gene of a non-waxy accession of Job’s tears (Coix lacryma-jobi) by PCR-based methods.

We also compared the entire sequences of the gene between two non-waxy accessions and three waxy cultivars and found a bp deletion in the coding region (exons 10–11) of this gene specific to waxy :// GENETIC FINE STRUCTURE OF THE BRONZE LOCUS IN MAIZE Hugo K.

Dooner 1 1 Advanced Genetic Sciences, San Pablo Avenue, Oakland, California The bronze (bz) locus in maize, located in the short arm of chromosome 9 (9S), is the structural gene for the anthocyanin biosynthetic enzyme UFGT.

The gene has been cloned and its physical map has been oriented relative to the Aron T Cory, Manu P Gangola, Anthony Anyia, Monica Båga and Ravindra N Chibbar, Genotype, environment and G × E interaction influence (1,3;1,4)‐β‐d‐glucan fine structure in barley (Hordeum vulgare L.), Journal of the Science of Food and Agriculture, 97, 3, (), ().

The structure of the wild-type waxy (wx +) locus was determined by sequence analysis of both a genomic and an almost full-size cDNA clone.

The coding region comprises 3, bp and is composed of   This project involves the breeding of new and improved barley cultivars for release to growers and research on important relevant genetic traits that impact barley adaptation and production and end use quality.

There is a constant need for new barley cultivars bred at Washington State University (WSU) because of an ever changing landscape of environmental and biological stresses A set of accessions of common millet, Panicum miliaceum L., from 12 provinces of China were assessed for endosperm starch type (waxy or non-waxy) using I 2-KI staining, amylose and amylopectin contents using the dual-wavelength colorimetric method, and genotype of Waxy genes conditioning amylose content by gene sequencing.

Endosperm starch content varied from % to %, Using Agrobacterium-delivered CRISPR/Cas9, Abe et al. developed a loss-of-function triple mutation of Qsd1, which controls seed dormancy in barley, resulting in longer seed dormancy in wheat. This serves as a model technique for the improvement of wheat traits, particularly genetically recessive traits, based on locus information for diploid ://(19)   Genome-wide association studies (GWAS) based on linkage disequilibrium (LD) provide a promising tool for the detection and fine mapping of quantitative trait loci (QTL) underlying complex agronomic traits.

In this study we explored the genetic basis of variation for the traits heading date, plant height, thousand grain weight, starch content and crude protein content in a diverse collection of   Barley (Hordeum vulgare ssp.

vulgare) was first cultiva years ago in the Fertile Crescent and is one of the founder crops of Eurasian agriculture. Phylogeographic analysis of five nuclear loci and morphological assessment of two traits in > domesticated barley accessions reveal that landraces found in South and East Asia are genetically distinct from those in Europe and North   Takeshi Izawa and colleagues report the cloning of a gene underlying a rice quantitative trait locus influencing grain width.

A deletion in qSW5 increases yield of rice grains, and the authors. Asian rice, Oryza sativa is a cultivated, inbreeding species that feeds over half of the world's population.

Understanding the genetic basis of diverse physiological, developmental, and   Recently, a third wax-inhibitor locus Iw3 was identified on chromosome 1BS from wild emmer wheat, and a fine map of the Iw3 locus is available.

Iw2 is located on 2DS in Aegilops tauschii Coss. (2n = 2x = 14, DD), which is diploid and the progenitor of the D-genome of common wheat [ 14 ], but to our knowledge, a high-resolution genetic map of Gelatinization properties differed only between waxy and wild-type LR, and all waxy LR were comparable to a commercial waxy hybrid.

The fine structure of waxy amylopectin had fewer short chains compared with that in wild-type. So far, the differences observed in starch properties are likely associated exclusively with the waxy trait. Despite