Sunflower

Kaya, Yalçın

doi:10.1007/978-1-4614-9572-7_13

Cited by 12 publications

(16 citation statements)

References 125 publications

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“…Indeed, it is perhaps surprising that additional non‐ H. annuus haplotypes were not more commonly observed, as breeders have introduced allelic variation for novel traits (e.g., resistance against a range of pathogens) by prolific and repeated introgression of genetic material from other Helianthus species. H. annuus has reportedly been crossed with every annual species and 14 perennial species in the genus (Kaya, ). Our finding of only two introgressed haplotypes, one of which was deliberately selected for, likely reflects that H. annuus has predominantly served as the recurrent maternal parent during sunflower improvement.…”

Section: Discussionmentioning

confidence: 99%

Ancient DNA reveals the timing and persistence of organellar genetic bottlenecks over 3,000 years of sunflower domestication and improvement

Wales

Akman

Watson

et al. 2018

Evolutionary Applications

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Here, we report a comprehensive paleogenomic study of archaeological and ethnographic sunflower remains that provides significant new insights into the process of domestication of this important crop. DNA from both ancient and historic contexts yielded high proportions of endogenous DNA, and although archaeological DNA was found to be highly degraded, it still provided sufficient coverage to analyze genetic changes over time. Shotgun sequencing data from specimens from the Eden's Bluff archaeological site in Arkansas yielded organellar DNA sequence from specimens up to 3,100 years old. Their sequences match those of modern cultivated sunflowers and are consistent with an early domestication bottleneck in this species. Our findings also suggest that recent breeding of sunflowers has led to a loss of genetic diversity that was present only a century ago in Native American landraces. These breeding episodes also left a profound signature on the mitochondrial and plastid haplotypes in cultivars, as two types were intentionally introduced from other Helianthus species for crop improvement. These findings gained from ancient and historic sunflower specimens underscore how future in-depth gene-based analyses can advance our understanding of the pace and targets of selection during the domestication of sunflower and other crop species.

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Section: Discussionmentioning

confidence: 99%

Ancient DNA reveals the timing and persistence of organellar genetic bottlenecks over 3,000 years of sunflower domestication and improvement

Wales

Akman

Watson

et al. 2018

Evolutionary Applications

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“…The high oilseed content types were readily adapted by the world for cultivation and further improvement. Development of a single cross‐hybrid was next major breakthrough in which the achene yield was significantly improved without decreasing seed oil content . Sunflower is the second major field crop species after maize which is cultivated through single cross‐hybrid seed.…”

Section: Introductionmentioning

confidence: 99%

Progress in modification of sunflower oil to expand its industrial value

Rauf

Jamil

Tariq³

et al. 2017

J Sci Food Agric

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Increasing the sunflower seed oil content as well as improving its quality makes it compatible for industrial demands. This is an important breeding objective of sunflower which increases its market value and ensures high returns for the producers. The present review focuses on determining the progress of improving sunflower seed oil content and modifying its quality by empirical and advanced molecular breeding methods. It is known that the sunflower oil content and quality have been altered through empirical selection methods and mutation breeding programmes in various parts of the world. Further improvement in seed oil content and its components (such as phytosterols, tocopherols and modified fatty acid profile) has been slowed down due to low genetic variation in elite germplasm and complex of hereditary traits. Introgression from wild species can be carried out to modify the fatty acids profile and tocopherol contents with linkage drags. Different transgenes introduced through biotechnological methods may produce novel long-chain fatty acids within sunflower oil. Bio-engineering of sunflower oil could allow it to be used in diverse industrial products such as bio-diesel or bio-plastics. These results showed that past and current trends of modifying sunflower oil quality are essential for its further expansion as an oilseed crop. © 2017 Society of Chemical Industry.

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“…However, some tolerant genes were determined in wild types and transferred into cultural ones (Kaya, 2014). On the other hand, especially in controlled conditions, sunflower genetic materials could be screened efficiently to generate tolerant lines to drought stress with simultaneous selection (Geetha et al, 2012;Soorninia et al, 2012).…”

Section: Introductionmentioning

confidence: 99%