Begonia ×dinglensis, a natural hybrid of Philippine Begonia section Baryandra, as evidenced by morphological, phylogenetic and cytological data

Phytotaxa ◽  
2021 ◽  
Vol 494 (1) ◽  
pp. 151-164
Author(s):  
KOH NAKAMURA ◽  
ROSARIO RIVERA RUBITE ◽  
YOSHIKO KONO ◽  
JELENE V. MACABASCO ◽  
ARLENE D. TALAÑA ◽  
...  
Keyword(s):  
National Park ◽  
Natural Hybridization ◽  
Rock Slopes ◽  
Natural Hybrid ◽  
Cytological Evidence ◽  
Cytological Data ◽  
Place Of Origin

Here we describe a natural hybrid of Philippine Begonia from Bulabog Puti-an National Park in Dingle, Iloilo, Panay Island. The hybrid, named Begonia ×dinglensis after its place of origin, grows on moist, coralline-rock slopes at 200 m elevation. Morphological, molecular, and cytological evidence support its origin from natural hybridization between Philippine endemics B. camiguinensis and B. nigritarum.

scholarly journals A new hybrid of Tectaria (Tectariaceae) from southern China

Phytotaxa ◽  
2016 ◽  
Vol 266 (3) ◽  
pp. 213
Author(s):  
HUI-GUO ZHAO ◽  
SHI-YONG DONG
Keyword(s):  
Hong Kong ◽  
East Asia ◽  
Southern China ◽  
Molecular Data ◽  
Sterile Hybrid ◽  
Natural Hybrid ◽  
Cytological Evidence ◽  
Maternal Parent ◽  
Cytological Data

A new natural hybrid, Tectaria × hongkongensis (Tectariaceae), is described and illustrated from Hong Kong, China. It is a sterile hybrid supported by the abortive spores and cytological data [2n = 120 (3x)]. This hybrid is morphologically somewhat similar to T. zeilanica in the small size of plants, strongly dimorphic leaves, the shape of sterile fronds, and acrostichoid sporangia. Molecular data indicate its maternal parent is probably T. harlandii. Tectaria × hongkongensis is the first hybrid confirmed by morphological and cytological evidence in East Asia.

A natural intergeneric hybrid of Gesneriaceae from Brazil

Phytotaxa ◽  
2021 ◽  
Vol 497 (2) ◽  
pp. 79-96
Author(s):  
ANDRÉA ONOFRE DE ARAUJO ◽  
MAURO PEIXOTO ◽  
CINTIA NEVES DE SOUZA ◽  
EDUARDO CUSTÓDIO GASPARINO ◽  
JULIANA TOLEDO FARIA ◽  
...  
Keyword(s):  
Chromosome Numbers ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Intergeneric Hybrid ◽  
Morphological Characters ◽  
Natural Hybrid ◽  
Pollen Data ◽  
Cytological Data ◽  
High Viability ◽  
Structural Abnormalities

A natural hybrid between Goyazia and Mandirola (Gloxiniinae, Gesneriaceae) from Cerrado (Brazil) is here described, supported by pollen morphology, cytological data and morphological characters. The microsporogenesis of Mandirola hirsuta and that of the hybrid were analyzed in order to evaluate the cytogenetic characteristics. The haploid chromosome numbers observed were n = 12 for M. hirsuta and n = 11, 13, 16 and 26 for the hybrid. Structural abnormalities (monads, dyads, triads and micronuclei) were observed at the final of the hybrid’s meiosis. High viability rates of the pollen were recorded for Goyazia and Mandirola (>90%) and low viability for the hybrid (34.7%). The pollen grains were acetolyzed, measured and photographed for pollen morphology analysis. Quantitative pollen data were analyzed through descriptive and multivariate statistics. The hybrid has intermediate pollen characteristics between G. petraea and M. hirsuta; it is more related to G. petraea by the measures of diameters and ectoapertures; it is more similar to M. hirsuta mainly regarding the microreticulum on the mesocolpium region. The hybrid and Mandirola share vegetative and flower size, while the colors of the hybrid are similar to Goyazia. Pollen morphology, cytological data and morphological characters brought clear evidence for the recognition of the intergeneric hybrid, which we named as Goydirola x punctata.

scholarly journals A new natural hybrid of Broughtonia (Orchidaceae) from Cuba

Lankesteriana ◽  
2015 ◽  
Vol 15 (3) ◽  
Author(s):  
Ernesto Mújica ◽  
Elaine González ◽  
José L. Bocourt ◽  
Esther L. SantaCruz ◽  
J. M. Díaz
Keyword(s):  
Related Species ◽  
San Antonio ◽  
Time Frame ◽  
Natural Hybridization ◽  
Floral Traits ◽  
Natural Hybrid ◽  
Single Specimen ◽  
Hybridization Event

At Cabo San Antonio (Guanahacabibes Peninsula), Cuba in 2004, a single specimen of Broughtonia ortgiesiana (Rchb.f.) Dressler, and a related species, Broughtonia cubensis (Lindl.) Cogn., were both observed in flower simultaneously. In 2006, fruits were observed on B. ortgiesiana, and nine years later (2015) we noted five young plants in anthesis that displayed floral characteristics common to both species. Given the time frame and the blend of floral traits, we conclude that these five plants are the result of a natural hybridization event between the two Broughtonia species the details of which are described here.

Catasetum × sheyllae (Orchidaceae: Catasetinae), a new natural hybrid from Brazilian Amazon

Phytotaxa ◽  
2021 ◽  
Vol 527 (4) ◽  
pp. 257-265
Author(s):  
PATRICK DE CASTRO CANTUÁRIA ◽  
DAYSE RAIANE PASSOS KRAHL ◽  
AMAURI HERBERT KRAHL ◽  
GUY CHIRON ◽  
João Batista Fernandes Da Silva ◽  
...  
Keyword(s):  
Field Study ◽  
Brazilian Amazon ◽  
Morphological Features ◽  
Natural Hybridization ◽  
Parent Species ◽  
Natural Hybrid ◽  
Putative Parent

Natural hybridization has often been recorded within certain genera of orchids, one of them is Catasetum. During a field study in a forest de igapó in Brazilian Amazon, a new natural hybrid was found, it is here described as Catasetum × sheyllae. Its morphological features, mainly the structures of the lip, are intermediate between those of its putative parent species, C. boyi and C. garnettianum, both observed in sympatry.

Natural Hybridization and Morphometric Relationships Between Three Mallee Eucalypts in the Fitzgerald River National Park, W.A

1978 ◽  
Vol 26 (3) ◽  
pp. 319 ◽  
Author(s):  
SD Hopper ◽  
DJ Coates ◽  
AH Burbidge
Keyword(s):  
Multivariate Analysis ◽  
National Park ◽  
Parental Species ◽  
Natural Hybridization ◽  
Reproductive Parameters ◽  
Sympatric Population ◽  
Sympatric Populations

The suspected occurrence of natural hybridization between Eucalyptus preissiana Schau, and E. Buprestium F. Muell, near West Mount Barren was investigated through a study of morphometric and reproductive parameters in allopatric and sympatric populations of these species. While E. Preissiana and E. buprestium were morphometrically distinct in allopatry, a small number of intermediate individuals occurred in one of the two sympatric populations examined. These intermediates set less fruit per plant than the parental species on average, a fact consistent with the hypothesis that they were hybrids showing partial F2 breakdown. The demonstration that New Holland honeyeaters (Phylidonyris novae-hollandiae) carried pollen of both parental species in a sympatric population was interpreted as further evidence in support of the occurrence of hybridization. The possible hybrid status of E. chrysantha Blakely & Steedman was investigated through determining its morphometric relationships in a multivariate analysis of E. sepulcralis F. Muell., E. Preissiana and E. buprestium. E. chrysantha was intermediate between E. sepulcralis and E. preissiana, and distinguishable from E. preissiana-E. buprestium hybrids in this analysis. The taxonomic and evolutionary implications of the study are discussed.

Emerging natural hybrid between Invasive Species and Native Congener of Emilia (Asteraceae) Found in Northern Taiwan

Phytotaxa ◽  
2018 ◽  
Vol 382 (2) ◽  
pp. 204
Author(s):  
JEN-YU WANG ◽  
JENN-CHE WANG
Keyword(s):  
Invasive Species ◽  
Flow Cytometry ◽  
Alien Species ◽  
Invasive Plants ◽  
Invasive Alien Species ◽  
Pollen Viability ◽  
Natural Hybridization ◽  
Natural Hybrid ◽  
The World ◽  
Northern Taiwan

Invasive plants had raised lots of concern about the environment and biodiversity. Many members of Asteraceae are notorious invasive alien species across the world. In Taiwan, Emilia (Asteraceae) contains one native and two naturalized species. Recently, we found some morphologically intermediate individuals between the native E. sonchifolia var. javanica and the alien E. praetermissa from northern Taiwan where the latter two grow sympatrically. Based on morphological comparisons, pollen viability and flow cytometry information, we confirmed the fact of natural hybridization. Herein, we describe a new hybrid Emilia ×latens J.-Y Wang & J.-C. Wang and provide a key to Emilia species in Taiwan.

Ionopsis × atalibae (Orchidaceae, Oncidiinae), a new natural hybrid from the Brazilian Amazon 

Phytotaxa ◽  
2021 ◽  
Vol 478 (2) ◽  
pp. 268-274
Author(s):  
AMAURI HERBERT KRAHL ◽  
DAYSE RAIANE PASSOS KRAHL ◽  
EMERSON RICARDO PANSARIN
Keyword(s):  
Brazilian Amazon ◽  
Sympatric Species ◽  
Flowering Plants ◽  
Natural Hybridization ◽  
Natural Hybrid ◽  
Intermediate Morphology ◽  
Relevant Role

Hybridization plays a relevant role in the evolution and diversification of flowering plants. Natural hybridization has been commonly recorded in some orchid groups. During fieldwork in a Citrus plantation in the Brazilian Amazon, plants of Ionopsis utricularioides, I. satyrioides and an unidentified taxon with intermediate morphology between both sympatric species were found. The plants with intermediate features are most likely a natural hybrid between I. utricularioides and I. satyrioides described here as I. × atalibae.

Natural interspecific hybridization in Odontophrynus (Anura: Cycloramphidae)

2009 ◽  
Vol 30 (4) ◽  
pp. 571-575 ◽  
Author(s):  
Julián Lescano ◽  
Dardo Marti ◽  
Diego Baldo ◽  
Martín Pereyra ◽  
Sergio Rosset
Keyword(s):  
South America ◽  
Parental Species ◽  
Single Case ◽  
Natural Hybridization ◽  
Natural Hybrid ◽  
Southern Brazil ◽  
Genetic Studies ◽  
Hybrid Genome ◽  
Group Report ◽  
Hybrid Specimen

AbstractThe frog genus Odontophrynus is a composite of diploid and tetraploid populations and species that are widely distributed in South America. Some of the several genetic studies on this group report the production of artificial hybrids but only a single case of natural hybridization has been documented, in southern Brazil. In this study we report the finding of an interspecific natural hybrid specimen in central Argentina. We present morphological and cytogenetical evidence that the diploid taxa Odontophrynus cordobae and O. occidentalis are the parental species. The hybrid genome exhibited problematic pairing and segregation of homeologue chromosomes during meiosis, and the production of non-reduced gametes.

scholarly journals Cytological evidence of natural hybridization in Brachiaria brizantha Stapf (Gramineae)

2006 ◽  
Vol 150 (4) ◽  
pp. 441-446 ◽  
Author(s):  
DANIELA VIEIRA MENDES ◽  
KELLEN REGINA BOLDRINI ◽  
ANDRÉA BEATRIZ MENDES-BONATO ◽  
MARIA SUELY PAGLIARINI ◽  
CACILDA BORGES DO VALLE
Keyword(s):  
Natural Hybridization ◽  
Brachiaria Brizantha ◽  
Cytological Evidence

I.—The Genus Primula: Section Farinosae

1944 ◽  
Vol 61 (1) ◽  
pp. 1-69 ◽  
Author(s):  
W. Wright Smith ◽  
H. R. Fletcher
Keyword(s):  
Detailed Analysis ◽  
Fundamental Difference ◽  
Point Of View ◽  
Cytological Evidence ◽  
The Third ◽  
The Past ◽  
Cytological Data ◽  
Representative Species ◽  
Valid Evidence ◽  
Shape And Size

The section Farinosae was first denned by Pax (1) in 1889 with citation of P. farinosa and P. sibirica as representative species. He published at the same time his section Auriculatae. The only distinction given of apparent moment between the two sections is the shape and size of the capsule. In Auriculatae it is globose and included in the calyx, while in Farinosae it is cylindric and more or less exserted. This diagnostic character was found to be unsatisfactory, with the result that in 1905 Pax (2) in his Monograph combined the two sections under Farinosae. There was still an undercurrent of opinion that a division was justified, and at the Third Primula Conference in 1913 Bayley Balfour (3) reverted to the previous arrangement without, however, any stated reasons. At the Fourth Primula Conference held in 1928 the sections of the genus were reviewed by Smith and Forrest (4), who again subordinated Auriculatae to Farinosae. In 1932 appeared Bruun's Cytological Studies in Primula (5), with a detailed analysis of the species then available in cultivation. Here valid evidence was given that certain species assessed in the past as within Auriculatae did differ cytologically from the general run of species included without question in the Farinosae. But the cytological evidence taken alone tends to associate these Auriculatae with other species quite dissimilar from the broad morphological point of view. The problem is referred to again by Wright Smith (6) in his Hooker Lecture, where it is admitted that the cytological data do support the view that there is a degree of fundamental difference between the two sections. But the difficulty still remains of finding satisfactory macroscopic distinctions. The present authors have come to the conclusion that it is better to keep both under the general heading Farinosae rather than to separate them by slender and often misleading characters supported as these may be by the cytology. In any case much remains to be done on the cytological side, as the majority of the species are yet to be analysed, and for general purposes the incorporation of the cytological data in an analytical key would not be satisfactory.

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