scholarly journals Wild helianthus species and wild-sunflower hybridization in Argentina

Helia ◽  
2004 ◽  
Vol 27 (40) ◽  
pp. 133-142 ◽  
Author(s):  
M. Poverene ◽  
A. Carrera ◽  
S. Ureta ◽  
M. Cantamutto
Keyword(s):  
Wild Sunflower ◽  
Helianthus Species

Comparative analysis of chloroplast genomes of seven perennial Helianthus species

Gene ◽  
2021 ◽  
Vol 774 ◽  
pp. 145418
Author(s):  
Kirill Azarin ◽  
Alexander Usatov ◽  
Maksim Makarenko ◽  
Vladimir Khachumov ◽  
Vera Gavrilova
Keyword(s):  
Comparative Analysis ◽  
Chloroplast Genomes ◽  
Helianthus Species

Ferality — Risks of Gene Flow between Sunflower and Other Helianthus Species

2005 ◽  
pp. 209-230 ◽  
Author(s):  
Bernard Poinso ◽  
Hervé Serieys ◽  
André Bervillé ◽  
Marie-Hélène Muller
Keyword(s):  
Gene Flow ◽  
Helianthus Species

scholarly journals Processing of Wild Sunflower with Different Moisture Contents into Solid Bio Fuel

2021 ◽  
pp. 1-9
Author(s):  
Fabie T. Dummapi ◽  
Jacqueline I. Liniasan ◽  
Marvin T. Valentin ◽  
Milagros B. Onalan ◽  
Leonardo D. Dumalhin ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Moisture Content ◽  
Physical Properties ◽  
Ignition Time ◽  
Volume Density ◽  
Ash Content ◽  
Burning Time ◽  
Wild Sunflower ◽  
Average Mass ◽  
Moisture Contents

Wild sunflower with moisture contents of 16%, 12% and 8% was densified without the addition of binding agent. The physical properties of the formed briquettes such as mass, dimensions, volume, density and shattering resistance were evaluated. Thermal properties like ignition time, burning time, ash content, and thermal fuel efficiency by means of boiling test were also evaluated. Wild Sunflower stems were gathered and shredded using locally fabricated biomass shredder available at the Research Office of Benguet State University, and were processed into the desired size and moisture contents. Right after the briquetting operation, the physical properties of the briquette were measured and then stored in a zip bag for 24 hours. After the storage, same measurement was conducted. Results show that the influence of moisture contents on the average mass, dimension, shattering resistance, volume and density was statistically insignificant. The wild sunflower with moisture content of 16% had the highest shattering resistance of 88.85%. Furthermore, the influence of moisture content on the thermal properties like ignition time, burning time and ash content are statistically insignificant. Among the moisture contents, the fastest ignition time of 43.75 sec with longest burning time was recorded under 12%. Ash content was also lowest at 12%.

Patterns of Mating in Wild Sunflower Hybrid Zones

Evolution ◽  
1998 ◽  
Vol 52 (3) ◽  
pp. 713 ◽  
Author(s):  
Loren H. Rieseberg ◽  
Stuart J. E. Baird ◽  
Andree M. Desrochers
Keyword(s):  
Hybrid Zones ◽  
Wild Sunflower

Comparison of fatty acid composition of oil from original and regenerated populations of wild Helianthus species

2014 ◽  
Vol 13 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Gerald J. Seiler
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Wild Species ◽  
Oil Quality ◽  
Wild Sunflower ◽  
Breeding Programmes ◽  
Precise Relationship ◽  
Germplasm Accessions

Monitoring and protecting germplasm in genebanks using in situ collections while preserving its original genetic integrity is a priority of germplasm curation. Many germplasm accessions need to be regenerated due to their demand and/or seed condition. The regeneration of wild Helianthus (sunflower) species poses several challenges due to the diversity of 53 wild species. Fatty acid composition of sunflower oil is an important quality factor for the crop. Since oil quality is environmentally influenced, and evaluation of this trait is usually performed on oil from achenes from the original accessions of wild sunflower species, we conducted a study on 72 accessions of eight annual and four perennial taxa of wild sunflower species to compare the oil quality of the original accessions and those regenerated for genebank maintenance. The results showed that the fatty acid composition profiles of achenes from the original and regenerated accessions are not the same. It seems that selection for specific fatty acids in several species will require the analysis of both populations to identify germplasm accessions for use in breeding programmes. It should be borne in mind that accessions of wild species are open-pollinated segregating populations, so one would expect some variability in each succeeding generation. While there may be differences between the original and regenerated accessions, the interrelationships of fatty acids are generally similar in wild and cultivated sunflower species, so there should be no detrimental effects on oil quality when using the wild species for other traits. As more regenerated accessions become available, a more precise relationship between the original and regenerated accessions should emerge.

scholarly journals Gene banks for wild and cultivated sunflower genetic resources

OCL ◽  
2020 ◽  
Vol 27 ◽  
pp. 9 ◽  
Author(s):  
Sreten Terzić ◽  
Marie-Claude Boniface ◽  
Laura Marek ◽  
Daniel Alvarez ◽  
Karin Baumann ◽  
...  
Keyword(s):  
North America ◽  
Genetic Resources ◽  
Helianthus Annuus ◽  
Inbred Lines ◽  
Wild Sunflower ◽  
Gene Banks ◽  
Breeding Programmes ◽  
Wild Accessions ◽  
Modern Breeding ◽  
Local Research

Modern breeding of sunflower (Helianthus annuus L.), which started 100 years ago, increased the number and the diversity of cultivated forms. In addition, for more than 50 years, wild sunflower and other Helianthus species have been collected in North America where they all originated. Collections of both cultivated and wild forms are maintained in gene banks in many countries where sunflower is an important crop, with some specificity according to the availability of germplasm and to local research and breeding programmes. Cultivated material includes land races, open pollinated varieties, synthetics and inbred lines. The majority of wild accessions are ecotypes of wild Helianthus annuus, but also 52 other species of Helianthus and a few related genera. The activities of three gene banks, in USA, France and Serbia, are described in detail, supplemented by data from seven other countries. Past and future uses of the genetic resources for environmental adaptation and breeding are discussed in relation to genomic and improved phenotypic knowledge of the cultivated and wild accessions available in the gene banks.

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