Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environments
Background. Comparative palynomorphological studies of naturally occurring and introduced Pterocarya Kunth representatives reveal the taxonomic significance of pollen morphological features and pollen characters of cultivated plants. The quality of pollen material and the potential of the plants fro...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
N.I. Vavilov All-Russian Institute of Plant Genetic Resources
2022-04-01
|
| Series: | Труды по прикладной ботанике, генетике и селекции |
| Subjects: | |
| Online Access: | https://elpub.vir.nw.ru/jour/article/view/1203 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832545004103401472 |
|---|---|
| author | O. A. Gavrilova G. A. Firsov D. A. Gornov A. N. Semenov A. V. Volchanskaya |
| author_facet | O. A. Gavrilova G. A. Firsov D. A. Gornov A. N. Semenov A. V. Volchanskaya |
| author_sort | O. A. Gavrilova |
| collection | DOAJ |
| description | Background. Comparative palynomorphological studies of naturally occurring and introduced Pterocarya Kunth representatives reveal the taxonomic significance of pollen morphological features and pollen characters of cultivated plants. The quality of pollen material and the potential of the plants from the Botanical Garden of BIN RAS for introduction are characterized.Materials and methods. Pollen grains were investigated using light, confocal laser scanning and scanning electron microscopes. Fertility was assessed using the standard acetocarmine method.Results. Comparison of pollen morphology in cultivated and naturally growing plants of this genus was made for the first time. Pollen fertility of two cultivated species (Pterocarya rhoifolia Siebold et Zucc., and P. stenoptera DC.) was very high, generally over 90%. Fertility of P. fraxinifolia (Lam.) Spach grains varied from 28 to 73% in different years, which is a low or medium level of pollen quality. Morphologically, pollen grains of all 12 specimens from five taxa are flattened, medium sized, 21–45 μm in diameter, with 4–8 pores; pores are located mainly at or near the equator. The pores are round or oval, with a limbus. Exine is three-layered, thickened near the pore. The sculpture is microechinate. The low-fertile P. fraxinifolia specimen contains small pollen grains, as well as grains in tetrads and dyads. The data on the introduction of the genus in St. Petersburg are presented.Conclusion. The palynonomophological description is diagnostic for the genus Pterocarya. The Pterocarya pollen is well distinguishable from other wind-pollinated taxa; however, species identification by pollen for spore-pollen analysis is not practicable. Morphologically, the most diverse are the grains of the low fertile specimen P. fraxinifolia. The limited possibility of seed propagation of P. fraxinifolia is probably explained by low pollen fertility. The pollen quality of the introduced P. rhoifolia and P. stenoptera is high. |
| format | Article |
| id | doaj-art-066c99a521024ae8a591d8292a080066 |
| institution | Kabale University |
| issn | 2227-8834 2619-0982 |
| language | English |
| publishDate | 2022-04-01 |
| publisher | N.I. Vavilov All-Russian Institute of Plant Genetic Resources |
| record_format | Article |
| series | Труды по прикладной ботанике, генетике и селекции |
| spelling | doaj-art-066c99a521024ae8a591d8292a0800662025-02-03T08:31:14ZengN.I. Vavilov All-Russian Institute of Plant Genetic ResourcesТруды по прикладной ботанике, генетике и селекции2227-88342619-09822022-04-01183118819810.30901/2227-8834-2022-1-188-198589Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environmentsO. A. Gavrilova0G. A. Firsov1D. A. Gornov2A. N. Semenov3A. V. Volchanskaya4Komarov Botanical Institute of the Russian Academy of SciencesKomarov Botanical Institute of the Russian Academy of SciencesKomarov Botanical Institute of the Russian Academy of SciencesKomarov Botanical Institute of the Russian Academy of SciencesKomarov Botanical Institute of the Russian Academy of SciencesBackground. Comparative palynomorphological studies of naturally occurring and introduced Pterocarya Kunth representatives reveal the taxonomic significance of pollen morphological features and pollen characters of cultivated plants. The quality of pollen material and the potential of the plants from the Botanical Garden of BIN RAS for introduction are characterized.Materials and methods. Pollen grains were investigated using light, confocal laser scanning and scanning electron microscopes. Fertility was assessed using the standard acetocarmine method.Results. Comparison of pollen morphology in cultivated and naturally growing plants of this genus was made for the first time. Pollen fertility of two cultivated species (Pterocarya rhoifolia Siebold et Zucc., and P. stenoptera DC.) was very high, generally over 90%. Fertility of P. fraxinifolia (Lam.) Spach grains varied from 28 to 73% in different years, which is a low or medium level of pollen quality. Morphologically, pollen grains of all 12 specimens from five taxa are flattened, medium sized, 21–45 μm in diameter, with 4–8 pores; pores are located mainly at or near the equator. The pores are round or oval, with a limbus. Exine is three-layered, thickened near the pore. The sculpture is microechinate. The low-fertile P. fraxinifolia specimen contains small pollen grains, as well as grains in tetrads and dyads. The data on the introduction of the genus in St. Petersburg are presented.Conclusion. The palynonomophological description is diagnostic for the genus Pterocarya. The Pterocarya pollen is well distinguishable from other wind-pollinated taxa; however, species identification by pollen for spore-pollen analysis is not practicable. Morphologically, the most diverse are the grains of the low fertile specimen P. fraxinifolia. The limited possibility of seed propagation of P. fraxinifolia is probably explained by low pollen fertility. The pollen quality of the introduced P. rhoifolia and P. stenoptera is high.https://elpub.vir.nw.ru/jour/article/view/1203sporodermfertilityreproductionintroduction |
| spellingShingle | O. A. Gavrilova G. A. Firsov D. A. Gornov A. N. Semenov A. V. Volchanskaya Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environments Труды по прикладной ботанике, генетике и селекции sporoderm fertility reproduction introduction |
| title | Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environments |
| title_full | Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environments |
| title_fullStr | Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environments |
| title_full_unstemmed | Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environments |
| title_short | Pollen of <i>Pterocarya</i> (Juglandaceae) representatives from natural habitats and St. Petersburg environments |
| title_sort | pollen of i pterocarya i juglandaceae representatives from natural habitats and st petersburg environments |
| topic | sporoderm fertility reproduction introduction |
| url | https://elpub.vir.nw.ru/jour/article/view/1203 |
| work_keys_str_mv | AT oagavrilova pollenofipterocaryaijuglandaceaerepresentativesfromnaturalhabitatsandstpetersburgenvironments AT gafirsov pollenofipterocaryaijuglandaceaerepresentativesfromnaturalhabitatsandstpetersburgenvironments AT dagornov pollenofipterocaryaijuglandaceaerepresentativesfromnaturalhabitatsandstpetersburgenvironments AT ansemenov pollenofipterocaryaijuglandaceaerepresentativesfromnaturalhabitatsandstpetersburgenvironments AT avvolchanskaya pollenofipterocaryaijuglandaceaerepresentativesfromnaturalhabitatsandstpetersburgenvironments |