A compact sunflower line produced after cross Helianthus annuus x Verbesina encelioides

Abstract

Abstract:Intergeneric cross was made between the cultivated sunflower inbred line HA89 and an accession of wild Verbesina encelioides tolerant to drought and high temperature. The line was a BC 2 F 5 progeny. The most remarkable feature of the plants was their compact architecture due to short petiole length and also, rather specific bright-yellow inflorescences. Similar plant architecture did not exist in either the wild or the cultivated parent. For sunflower, it is considered as a favourable and potentially useful adaptive trait. The line was multi-branched of medium type branching and possessed good agronomic characteristics.TheoverallcharacteristicsofHA-VERBENClinemakeitausefulplantmaterialforresearchonwidehybridization.

A one-pot strategy for regioselective synthesis of 6-aryl-3-oxo-2,3-dihydropyridazine-4-carbohydrazides

“…In particular, the program combines interest from both plant breeding and academic research in the use of wide hybridization for transferring desirable traits from wild relatives to cultivated sunflower, developing germplasm pools having wild Helianthus genes in a domestic background, and for characterizing phylogenetic affinity. Hybrids between cultivated H. annuus and species of different genera of the family Asteraceae such as Tithonia rotundifolia and Verbesina encelioides, identified as having intermediate characteristics, have been reported in our previous studies (Christov and Vassilevska-Ivanova 1999;Vassilevska-Ivanova et al 1999;Vassilevska-Ivanova and Tcekova 2005;Vassilevska-Ivanova 2005;Vassilevska-Ivanova et al, 2013).…”

Evaluating an Interspecific Helianthus annuus × Helianthus nuttallii Line for Use in Sunflower Breeding Program

“…During the last few years, there has been an increasing interest in the use of wild sunflower relatives in particular breeding programs which aim was providing useful materials to support practical breeding strategies. To produce potential new cultivars, interspecific and intergeneric hybridizations have been performed between common H. annuus and its wild relatives (Faure et al, 2002;Breton et al, 2012;Vassilevska-Ivanova et al, 2013;Vassilevska-Ivanova et al, 2014;Vassilevska-Ivanova et al, 2015;Liu et al, 2017;Seiler et al, 2017). Helianthus is a diverse genus comprised of 51 species with 14 annual and 37 perennial, all native to North America (Shilling, 2006).…”

Drought Stress Responses of Sunflower Germplasm Developed after Wide Hybridization

“…In sunflower, wide hybridization (interspecific and intergeneric) is a useful technique for increase the genetic variations in hybridizing population and so, for development of new genotypes with desirable agronomic traits (Faure et al, 2002;Rönicke et al, 2004;Breton et al, 2010;Breton et al, 2012;Vassilevska-Ivanova et al, 2013;Vassilevska-Ivanova et al, 2014a). For drought tolerance breeding, wild annual species H. argophyllus has been a potential source for genes for drought resistance and has therefore extensively used by sunflower breeders (Griveau et al, 1998;Petcu and Pâcureanu, 2011).…”

“…For drought tolerance breeding, wild annual species H. argophyllus has been a potential source for genes for drought resistance and has therefore extensively used by sunflower breeders (Griveau et al, 1998;Petcu and Pâcureanu, 2011). There have been few studies of hybridization between cultivated sunflower H. annuus and species from related genera of Asteraceae family (Reyes-Valdés et al, 2005;Vassilevska-Ivanova and Naidenova, 2005;Vassilevska-Ivanova et al, 2013;Vassilevska-Ivanova et al, 2014a;Vassilevska-Ivanova et al, 2015). In this study, we included two advanced breeding line developed after conventional crosses: Helianthus annuus × Tithonia rotundifolia (Miller) S. F. Blake and Helianthus annuus × Verbesina encelioides (Cav) Benth.…”

“…Although previous research discussed wide hybridization in sunflower as one of the most important strategies having the potential to combine useful traits of both parents that could not be achieved by crossing within a single species (Faure et al, 2002;Rönicke et al, 2004;Breton et al, 2010;Breton et al, 2012;Vassilevska-Ivanova et al, 2013;Vassilevska-Ivanova et al, 2014a), so far there has been no side-by-side comparison of hybrid plants with regard to their origin on drought stress. Therefore, we have analyzed the behavior of three different sunflower genotypes-cultivated H. annuus and two advanced lines developed after intergeneric hybridization with species of related genera Verbesina and Tithonia in the early developmental stages under experimental drought conditions.…”