scholarly journals Needle morphological evidence of the homoploid hybrid origin of P inus densata based on analysis of artificial hybrids and the putative parents, P inus tabuliformis and P inus yunnanensis

2014 ◽  
Vol 4 (10) ◽  
pp. 1890-1902 ◽  
Author(s):  
Fangqian Xing ◽  
Jian‐Feng Mao ◽  
Jingxiang Meng ◽  
Jianfeng Dai ◽  
Wei Zhao ◽  
...  
Keyword(s):  
Hybrid Origin ◽  
Morphological Evidence ◽  
Homoploid Hybrid

Evolutionary history of Purple cone spruce (Picea purpurea) in the Qinghai-Tibet Plateau: homoploid hybrid origin and Pleistocene expansion

2013 ◽  
Vol 23 (2) ◽  
pp. 343-359 ◽  
Author(s):  
Yongshuai Sun ◽  
Richard J. Abbott ◽  
Lili Li ◽  
Long Li ◽  
Jiabin Zou ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Hybrid Origin ◽  
Tibet Plateau ◽  
History Of ◽  
Homoploid Hybrid ◽  
Qinghai Tibet Plateau

scholarly journals A re‐evaluation of the homoploid hybrid origin of A egilops tauschii , the donor of the wheat D‐subgenome

2015 ◽  
Vol 208 (1) ◽  
pp. 4-8 ◽  
Author(s):  
Lin‐Feng Li ◽  
Bao Liu ◽  
Kenneth M. Olsen ◽  
Jonathan F. Wendel
Keyword(s):  
Hybrid Origin ◽  
Homoploid Hybrid

Molecular and morphological evidence for hybrid origin and matroclinal inheritance of an endangered wild rose, Rosa  × pseudobanksiae (Rosaceae) from China

2019 ◽  
Vol 21 (1) ◽  
pp. 1-11
Author(s):  
Cheng Zhang ◽  
Shi-Qi Li ◽  
Yu Zhang ◽  
Zhang-Ming Zhu ◽  
Jian-Quan Liu ◽  
...  
Keyword(s):  
Hybrid Origin ◽  
Morphological Evidence

The hybrid origin of Phai Liang, a bamboo of recent introduction into horticulture in Southeast Asia, and a new nothogenus, ×Thyrsocalamus (Bambuseae: Bambusinae)

Phytotaxa ◽  
2018 ◽  
Vol 362 (3) ◽  
pp. 271
Author(s):  
WEI LIM GOH ◽  
SARAWOOD SUNGKAEW ◽  
ATCHARA TEERAWATANANON ◽  
DIETER OHRNBERGER6 ◽  
NIANHE XIA ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Parental Species ◽  
Morphological Characteristics ◽  
Morphological Characters ◽  
Starch Synthase ◽  
Hybrid Origin ◽  
Morphological Evidence ◽  
Recent Introduction ◽  
Dendrocalamus Membranaceus ◽  
Granule Bound Starch Synthase

Phai Liang, a recent bamboo cultivar originating in Thailand and widely introduced to many parts of Malaysia and Singapore, has yet to be diagnosed scientifically. In this study, the partial nuclear Granule Bound Starch Synthase I (GBSSI) gene of Phai Liang was cloned and sequenced to investigate its hybrid origin. Its morphological characteristics were compared with those of its putative parental taxa. Based on both molecular and morphological evidence, Phai Liang is recognized as representing a new nothogenus and nothospecies, ×Thyrsocalamus liang. This circumscribes a hybridization complex with variable morphological characters which reflect different degrees of intergradation between the parental species, Dendrocalamus membranaceus and Thyrsostachys siamensis.

scholarly journals Morphological and Genome-Wide Evidence of Homoploid Hybridisation in Urospermum (Asteraceae)

Plants ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 182
Author(s):  
Jaume Pellicer ◽  
Manica Balant ◽  
Pol Fernández ◽  
Roi Rodríguez González ◽  
Oriane Hidalgo
Keyword(s):  
Mediterranean Region ◽  
Sequence Data ◽  
Molecular Methods ◽  
Hybrid Origin ◽  
Genome Wide ◽  
Intermediate Morphology ◽  
Mediterranean Regions ◽  
Homoploid Hybrid ◽  
Potential Impact ◽  
Intermediate Traits

The genus Urospermum is distributed in the Mediterranean region and Macaronesia, and has been introduced to other extra-Mediterranean regions. Although the two species constituting the genus, U. dalechampii and U. picroides, are frequently found together, hybrids have so far only been reported once, from Morocco. However, we found certain individuals in Catalonia, whose intermediate morphology suggested a potential hybrid origin. In this study, we applied morphological and molecular methods to investigate the origin of those individuals. Intermediate features at phenotype, karyological, cytogenetic, and genomic levels were identified in morphologically intermediate individuals, supporting their homoploid hybrid origin. Chloroplast sequence data suggest that U. dalechampii is the maternal progenitor of the hybrid. Together with the intermediate traits displayed, the lack of fertile seeds suggests that hybrids are probably F1. Future monitoring studies will be, nonetheless, needed to evaluate the extent of hybridisation and its potential impact on the biology of the genus.

scholarly journals Natural hybridization between two butterfly bushes in Tibet: dominance of F1 hybrids promotes strong reproductive isolation

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Rongli Liao ◽  
Weibang Sun ◽  
Yongpeng Ma
Keyword(s):  
Morphological Characters ◽  
Natural Hybridization ◽  
Hybrid Origin ◽  
F1 Hybrids ◽  
Morphological Evidence ◽  
Sympatric Populations ◽  
Intergenic Spacers ◽  
Hybridization Origin ◽  
Butterfly Bush ◽  
Disturbed Habitats

AbstractBackgroundIt has been recognized that a certain amount of habitat disturbance is a facilitating factor for the occurrence of natural hybridization, yet to date we are unaware of any studies exploring hybridization and reproductive barriers in those plants preferentially occupying disturbed habitats.Buddlejaplants (also called butterfly bush) generally do grow in disturbed habitats, and several species with hybrid origin have been proposed, based solely on morphological evidence.ResultsIn the present study, we test the hypothesis thatB. × wardiiis of natural hybridization origin in two sympatric populations of three taxa includingB. × wardiiand its parents (B. alternifoliaandB. crispa) plus 4 referenced parental populations, using four nuclear genes and three chloroplast intergenic spacers, as well as with 10 morphological characters. Our results suggest that at both sitesB. × wardiiis likely to be a hybrid betweenB. alternifoliaandB. crispa, and moreover, we confirm that most of the hybrids examined are F1s. That these plants are F1s is further supported by morphology, as no transgressive characters were detected.B. crispawas found to be the maternal parent in the Bahe (BH) population, from cpDNA evidence. However, in the Taji (TJ) population, the direction of hybridization was difficult to establish due to the shared cpDNA haplotypes betweenB. alternifoliaandB. crispa, however we still predicted a similar unidirectional hybridization pattern due to results from cross-specific pollination treatments which supported the “SI × SC rule”.ConclusionsThe presence of mainly F1hybrids can successfully impede gene flow and thus maintain species boundaries in parental species in a typical distribution ofBuddleja, i.e. in disturbed habitats.

scholarly journals Evolutionary origin and systematic position of Euphorbia normannii (Euphorbiaceae), an intersectional hybrid and local endemic of the Stavropol Heights (Northern Caucasus, Russia)

2021 ◽  
Vol 307 (2) ◽  
Author(s):  
Božo Frajman ◽  
Dmitry Geltman
Keyword(s):  
Phylogenetic Signal ◽  
Nuclear Data ◽  
Systematic Position ◽  
Hybrid Origin ◽  
Northern Caucasus ◽  
Phylogenetic Position ◽  
Annual Species ◽  
The Caucasus ◽  
Homoploid Hybrid ◽  
Local Endemic

AbstractThe Caucasus is one of the richest areas in the world in terms of animal and plant diversity, harbouring 6400 plant species. As a part of the Northern Caucasus, the Stavropol Heights are renowned for their local endemism, highlighted by six species of flowering plants endemic to this area. One of them is the annual species Euphorbia normannii, described in 1891, but with uncertain taxonomic position. We here used nuclear ribosomal internal transcribed spacer and plastid trnT–trnF sequences to infer the phylogenetic position of E. normannii. The nuclear data inferred its position within E. sect. Myrsiniteae, whereas the plastid data placed it within E. sect. Pithyusa, thus indicating a hybrid origin. Relative genome size (RGS) data indicate that E. normannii has the highest RGS compared to three other annual species belonging to both sections (E. aleppica, E. gaillardotii and E. falcata). Our data are inconclusive whether E. normannii is of allopolyploid or homoploid hybrid origin, or whether later hybridisation and plastid capture from E. sect. Pithyusa was responsible for the incongruent phylogenetic signal. Morphologically, E. normannii is distinct, as are all three before-mentioned annuals, which fall in predominately perennial sections. However, the species most similar to E. normannii is E. falcata from E. sect. Pithyusa and therefore we propose inclusion of E. normannii in this section.

Sign in / Sign up

Export Citation Format

Share Document