Sunflower [10.1007/978-1-4614-9572-7]
Küçük Resim Yok
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer New York
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Sunflower (2n = 17) belongs to the genus Helianthus (Asteraceae) which consists of 52 species and 19 subspecies with 14 annual and 38 perennial species. Wild Helianthus species display large morphological variations and have valuable genes for several traits including high seed and oil yield, oil quality, and resistance to abiotic and biotic stresses. It is easier to cross the annual species than the perennial ones because perennial species are much more diverse and their genomes display different ploidy levels. The difficulty of crossing in wild perennial Helianthus species can be overcome by the novel molecular breeding techniques which have made these species available for breeding purposes and alien gene transfer into cultivated background. The beneficial genes from wild species have broadened the genetic base of cultivated sunflower providing valuable sources for many agronomic traits. Consequently, significant progress has been made in transferring resistance to new races of downy mildew, rust, broomrape, and other diseases such as Phoma, Phomopsis and Sclerotinia. Sources for cytoplasmic male sterility and fertility restoration genes have been identified besides new genes for improving oil quality, herbicide resistance, and salt tolerance. However, only a small portion of the available genetic diversity of the wild Helianthus species has been utilized until now, and therefore quest for search of more alien genes is likely to continue in sunflower. © Springer Science+Business Media, LLC, 2014.
Açıklama
Anahtar Kelimeler
Alien Gene Transfer; Cms; Helianthus; Hybridization; Introgression; Oil Quality; Sunflower
Kaynak
Alien Gene Transfer in Crop Plants, Volume 2: Achievements and Impacts
WoS Q Değeri
Scopus Q Değeri
N/A
