Intergeneric hybridisation between Berula erecta and Helosciadium nodiflorum (Apiaceae)

Taxon ◽  
2015 ◽  
Vol 64 (4) ◽  
pp. 784-794 ◽  
Author(s):  
Stuart D. Desjardins ◽  
Alan C. Leslie ◽  
Clive A. Stace ◽  
Trude Schwarzacher ◽  
John P. Bailey
Keyword(s):  
Intergeneric Hybridisation ◽  
Berula Erecta

scholarly journals New locations of rare and protected plant species of the aquatic ecosystems of Minsk Region and National park “Belovezhskaya Pushcha”

2018 ◽  
Vol 63 (4) ◽  
pp. 437-446
Author(s):  
K. L. Savitskaya ◽  
М. A. Dzhus
Keyword(s):  
Plant Species ◽  
National Park ◽  
Aquatic Plant ◽  
New Information ◽  
New Locations ◽  
Salvinia Natans ◽  
The Republic ◽  
Data Deficient ◽  
First Time ◽  
Berula Erecta

There is a review of floral studies of the water bodies in Minsk Region and National Park “Belovezhskaya Pushcha”. 75 new locations of 20 rare aquatic and riverside plant species coming at the water and 1 hybrid were found. 7 of these species are listed in the Red Book of the Republic of Belarus, 5 species are included into the category of Least Concern and Data Deficient. Potamogeton berchtoldii Fieber, Utricularia minor L., Potamogeton acutifolius Link, P. nodosus Poir., Salvinia natans (L.) All. are reported for the first time from National Park «Belovezhskaya Pushcha». The spreading of Berula erecta (Huds.) Coville on the territory of National Park is considered in detail. New locations of Nuphar pumila (Timm) DC., Ranunculus kauffmannii Clerc., Najas major All., Berula erecta, Glyceria lithuanica (Gorski) Gorski, Conioselinum tatari­ cum Hoffm. in Minsk Region, which were not included in 4th edition of the Red Book, have been described. A brief description of habitat environmental conditions is given for the revealed species of aquatic plants, and their phytocoenotic confinement is also pointed out. New information on the locations of protected aquatic plant species should be used to monitor their populations and prepare the documents of protection.

scholarly journals Intergeneric Hybridisation in Cichorieae, III

CYTOLOGIA ◽  
1937 ◽  
Vol FujiiJubilaei (1) ◽  
pp. 535-539 ◽  
Author(s):  
Humihiko Ono
Keyword(s):  
Intergeneric Hybridisation

Cytological analysis of hybrid embryos of intergeneric crosses between Salix viminalis and Populus species

2010 ◽  
Vol 58 (1) ◽  
pp. 42 ◽  
Author(s):  
Agnieszka Bagniewska-Zadworna ◽  
Maria K. Wojciechowicz ◽  
Maciej Zenkteler ◽  
Stanisław Jeżowski ◽  
Elżbieta Zenkteler
Keyword(s):  
Laser Scanning ◽  
Populus Trichocarpa ◽  
Embryo Rescue ◽  
Laser Scanning Microscopy ◽  
Salix Viminalis ◽  
Confocal Laser ◽  
Hybrid Plants ◽  
Populus Species ◽  
Intergeneric Hybridisation

Intergeneric hybridisation between Salix viminalis L. as the female and four Populus species (Populus trichocarpa, P. tremula, P. × canadensis and P. simonii) as male pollen donors was performed by in vitro stigma pollination. To overcome postzygotic barriers, transfer of hybrid embryos to new medium is necessary. We carried out detailed ultrastructural analyses to establish: (i) at which stage of embryo development the first signs of programmed cell death (PCD) could be detected; and (ii) at which stage the lack of serious or irreversible changes guaranteed that advanced development of hybrid plants could occur after embryo rescue. Transmission electron microscopy and confocal laser scanning microscopy revealed the presence of both developing and degenerating embryos. Developing globular, heart-shaped, and early cotyledonary embryos contained cells of correct ultrastructure. The only sign of intergeneric hybridisation was a delay in development for a few days, in comparison with control embryos. The earliest indicators of embryo degeneration were noted at 9 days after pollination (DAP). The most common indicators were excessive embryo vacuolisation, which was characterised by a large number of vesicles and formation of small vacuoles, as well as enlarged central vacuoles. Extended plastid thylakoids, folding of the cell wall, and autophagosomes were observed. Our detailed investigation of PCD in hybrid embryos enabled us to conclude that the embryo rescue technique was most effective in intergeneric willow × poplar crosses if applied between 9 and 16 DAP.

Response of Berula erecta to Lead in Combination with Selenium

2020 ◽  
Vol 105 (1) ◽  
pp. 51-61
Author(s):  
Špela Mechora ◽  
Tadeja Rižnik ◽  
Andreja Urbanek Krajnc ◽  
Jana Ambrožič-Dolinšek
Keyword(s):  
Berula Erecta

Implications of climate change for submerged macrophytes: effects of CO2, flow velocity and nutrient concentration on Berula erecta

2020 ◽  
Vol 54 (3) ◽  
pp. 775-793
Author(s):  
Rosanne E. Reitsema ◽  
Stefan Preiner ◽  
Patrick Meire ◽  
Thomas Hein ◽  
Gudrun De Boeck ◽  
...  
Keyword(s):  
Climate Change ◽  
Flow Velocity ◽  
Nutrient Concentration ◽  
Submerged Macrophytes ◽  
Co2 Flow ◽  
Berula Erecta

Potential for using Vasconcellea parviflora as a bridging species in intergeneric hybridisation between V. pubescens and Carica papaya

2009 ◽  
Vol 57 (7) ◽  
pp. 592 ◽  
Author(s):  
C. M. O'Brien ◽  
R. A. Drew
Keyword(s):  
Carica Papaya ◽  
Fruit Size ◽  
Morphological Characteristics ◽  
Flower Colour ◽  
Intergeneric Hybrid ◽  
Plant Size ◽  
F1 Hybrids ◽  
Leaf Vein ◽  
High Degree ◽  
Intergeneric Hybridisation

There have been numerous attempts to transfer Papaya ringspot virus type P (PRSV-P) resistance from wild Vasconcellea relatives to Carica papaya L. Success has been limited by the high degree of genetic divergence and thus incompatibility between Vasconcellea spp. and C. papaya. In the present work, intergeneric hybrid populations of C. papaya × V. pubescens Lenne et Koch, C. papaya × V. parviflora A. DC. and interspecific populations of V. pubescens × V. parviflora were produced and evaluated for morphological characteristics and PRSV-P resistance. F2 and F3 populations were produced from the V. pubescens × V. parviflora F1 and PRSV-P resistant individuals with homozygous genotypes (RR) were selected with the aid of a co-dominant CAPS marker and backcrossed to V. parviflora or outcrossed to C. papaya. Leaf vein number (seven) from V. pubescens, flower colour (pink) from V. parviflora and petiole colour (red–green) and plant size from C. papaya were transferred as dominant traits in interspecific and intergeneric crosses. Other traits, e.g. flower shape and fruit size, were intermediate in hybrids. When the wild species or their hybrids were outcrossed to C. papaya, inheritance patterns did not always follow Mendelian ratios, suggesting abnormal pairing of chromosomes or preferential elimination of the Vasconcellea genes. For example, in crosses between C. papaya × V. pubescens, all flowers were female and in crosses between C. papaya × V. parviflora, the cream flower colour of C. papaya was dominant over the pink colour of V. parviflora. However, the PRSV-P resistance gene from V. pubescens was successfully backcrossed into V. parviflora from F2 hybrids, and in the F1 hybrids between C. papaya and V. parviflora, 45% pollen fertility was obtained thus V. parviflora is proposed as a potential bridging species between C. papaya and V. pubescens.

Sign in / Sign up

Export Citation Format

Share Document