By Jinguo Hu, Gerald Seiler, C. Kole
The sunflower has interested mankind for hundreds of years. The oilseed sunflower contributes approximately ten percentage of the world’s plant-derived fit to be eaten oil and the confection variety sunflower holds a substantial percentage of the at once fed on snacks industry. moreover, sunflower can be grown as a decorative for minimize flora, in addition to in domestic gardens. we're now embarking at the age of genomics so as to expedite the method of genetic development of vegetation. there was an explosion of knowledge on genetic markers, DNA sequences, and genomic assets for many significant nutrition vegetation together with sunflower. This quantity is meant to bridge conventional examine with smooth molecular investigations on sunflower.
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Additional info for Genetics, Genomics and Breeding of Sunflower
Sample text
Although many secondary and tertiary gene pools may appear to have no immediate use in breeding and genetic programs (Burton 1979), they may contain unidentified genes that will protect crops against new pests in the future. Hopefully, the present germplasm collection will contain the necessary germplasm. Although we cannot predict with acceptable levels of confidence the occurrence, severity, or even the nature of future stresses, germplasms with as wide a range of genetic diversity as possible should be developed for breeding programs (Jones 1983).
3 Ex situ Helianthus Collection The USDA-ARS National Plant Germplasm System (NPGS) sunflower collection is maintained at the North Central Regional Plant Introduction Station (NCRPIS) in Ames, Iowa, USA. The mission of the NCRPIS is to conserve genetically diverse crop germplasm and associated information, to conduct germplasm-related research, and to encourage the use of germplasm and associated information for research, crop improvement and product development. The collection contains 37 perennial species, 14 annual species, and the cultivated species, Helianthus annuus (Schilling 2006).
Occidentalis ssp. occidentalis Riddell H. occidentalis ssp. ) Heiser H. pauciflorus ssp. pauciflorus H. pauciflorus ssp. ) O. Spring H. silphioides Nutt. H. angustifolius L. Common Name Chromosome Number (n) Arizona 17 Texas blueweed Alkali 34, 51 Cusick’s Slender Dwarfish California Ten-petal Divergent Eggert’s Giant Sawtooth Hairy Maximilian Soft, Ashy Nuttall’s 17 17 17 51 17, 34 17 51 17 17 34 17 17 17 17 Rydberg’s 17 Resinous Willowleaf Schweinitz’s Swollen, Woodland Jerusalem artichoke Whiteleaf Smooth Small-headed Smith’s Purple-disk Fewleaf, Western 51 17 51 34, 51 51 17 34 17 17, 34 17 17 Fewleaf, Western 17 Stiff 51 Stiff 51 Odorous Narrowleaf, Swamp 17 17 Table 1-3 contd....