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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 11 to 20 of 87 (0.021 seconds)

Spelling suggestions: "subject:"sunflowers"" "subject:"sunflower's""

11

Single nucleotide polymorphism diversity in domesticated and wild sunflowers

Freeman, Carrie 16 September 2003 (has links)
Single nucleotide polymorphisms (SNPs) are the most common DNA polymorphisms in plant and animal genomes. SNPs were identified in the allele sequences of up to 12 sunflower (Helianthus annuus L.) genotypes for a genome-wide sample of 81 loci originally mapped using restriction fragment length polymorphism (RFLP) markers. The RFLP loci anchor a dense RFLP linkage map and second-generation linkage maps constructed using simple sequence repeats and other high-throughput DNA markers. The goal of this study was to develop high-throughput SNP markers for the cDNA-RFLP loci for linkage mapping, diversity analysis, and molecular breeding and genomics research. The specific objectives were to: (i) develop FP-TDI or fluorescent primer-extension SNP assays for the cDNA-RFLP loci; (ii) validate the SNP markers by screening 12 sequenced (reference) genotypes; and (iii) assess the utility and polymorphism rate of the SNP markers across a genetically diverse panel of unsequenced wild and domesticated sunflower genotypes. SNP markers were successfully developed for 44 of the targeted 49 cDNA-RFLP loci. Thirty-one of the SNP markers were further selected for a diversity analysis across a genetically diverse panel of wild and domesticated sunflower genotypes. The mean heterozygosity (H) score for the loci was 0.41, which nears the maximum H score of 0.5 for biallelic markers. SNPs in this study exhibited polymorphism rates close to those of RFLP and SSR markers in inbred sunflower lines. / Graduation date: 2004
Sunflowers -- Genetics
Genetic polymorphisms
12

Effects of environment on biology of Puccinia helianthi and on development of rust on sunflowers.

Liang, Chin-Yue. January 1966 (has links)
No description available.
Sunflowers -- Diseases and pests.
13

Mixed infection of cotton and sunflower with Verticillium dahliae Kleb. and Sclerotium bataticola Taub.

Twumasi, Joe Kingsley. January 1975 (has links)
No description available.
Cotton -- Diseases and pests
Sunflowers
14

An agronomic evaluation of sunflower (Helianthus annuus L.) in a mediterranean-type environment /

Potter, T. D. January 1983 (has links) (PDF)
Thesis (M.Ag.Sc.) --University of Adelaide, Dept. of Agronomy, 1984. / Typescript (photocopy).
Sunflowers Helianthus annuus.
15

Influence of agronomic practices, and a plant growth retardant on sunflower grain and silage production

Miller, Baird Collins. January 1982 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1982. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
Sunflowers Sunflower silage.
16

The acetohydroxyacid synthase gene family its role in herbicide resistant sunflowers /

Hawley, Robin M. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2006. / Printout. Includes bibliographical references (leaves 56-61). Also available on the World Wide Web.
Sunflowers Herbicide resistance.
17

Effect of cycocel on the growth and anatomy of Helianthus annus L. grown with a complete nutrient supply and without adequate nitrogen

Tawagen, Ahmed Mohammed Mousa, January 1969 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Typescript. Vita. Description based on print version record. Includes bibliographical references.
Plants Cycocel. Sunflowers.
18

Marker characterisation and validation in breeding programs for rust resistance in sunflowers, Helianthus annuus L. /

Lawson, Wendy Robyn. January 2003 (has links) (PDF)
Thesis (Ph.D.)--University of Queensland, 2002. / Includes bibliography.
University of Queensland. Sunflowers
19

The influence of certain environmental factors on the growth in vitro of excised tobacco and sunflower tissue

Hildebrandt, Albert Christian. January 1944 (has links)
Thesis (Ph. D.)--University of Wisconsin-Madison, 1944. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
20

Heliantheae of Wisconsin

Melchert, Thomas Edwin, January 1961 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1961. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 72-74).
Sunflowers. Bidens. Botany

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