Pollen morphology of Rhododendron subgen. Tsutsusi and its systematic implications

@article{Zhang2009PollenMO,
  title={Pollen morphology of Rhododendron subgen. Tsutsusi and its systematic implications},
  author={Yuele Zhang and Xiao‐Feng Jin and Bingyang Ding and Jingsong Zhu},
  journal={Journal of Systematics and Evolution},
  year={2009},
  volume={47}
}
Eighty‐four pollen samples were obtained for 80 taxa, of which, 13 species and one variety are from sect. Brachycalyx Sweet, 58 species and two varieties from sect. Tsutsusi Sweet, and six species from subgen. Pentanthera (G. Don) Pojarkova, respectively. Pollen morphology of all samples was observed using LM and SEM. Pollen grains are revealed to be spheroidal and tetrahedral with tricolporate apertures. Pollen sizes of subgen. Tsutsusi (Sweet) Pojarkova range from 37.67 μm to 61.06 μm, and… 

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References

SHOWING 1-10 OF 26 REFERENCES

Pollen morphology of Rhododendron and its taxonomic implication

TLDR
Pollen grains of 20 species of 5 subgenera in the genus Rhododendron L. were observed by scanning electron microscope(SEM) and the difference of pollen exine sculpture between sections inThe genus can provide palynology proof for further taxonomy, however, the identification of some certain species in Rhododendedron by morphological data of pollen should be analyzed carefully.

Pollen morphology of the Rhodoreae (Ericaceae) and its systematic implication

TLDR
The morphology of pollen did not fit for identify the subgenera as prmary character, and which can use for identification of some species in Rhododendron, but the difference of pollen exine sculpture between sections or subsections in subGenera can provide palynology proof and showed the important taxonomic significance.

Pollen Morphology of Rhododendron Subgenus Azaleastrum

TLDR
Pollen grains of 20 species and 2 varieties in 4 sections of genus Rhododendron subgenus Azaleastrum were examined by light microscope (LM) and scanning electron microscope (SEM) for the first time and can provide some proof for identification of some species in Rhododendedron.

A STUDY ON THE POLLEN MORPHOLOGY OF 4 GENERA OF FAMILY ERICACEAE IN NORTHEAST OF CHINA

TLDR
Pollen morphology of 6 species, 1 variety and 1 form of 4 genera of family Er icaceae, distributing in northeast of China, was examined in the light microsc op e(LM) and with the scanning electron microscope(SEM).

A STUDY ON THE POLLEN MORPHOLOGY OF RHODODENDRON IN NORTHEAST OF CHINA

Pollen morphology of 6 species, 1 variety, 1 form of genera Rhododendron (Ericaceae), distributing in northeast of China ,was examined in the light microscope(LM) and with the scanning electron

Phylogenetic Relationship of Subgenus Tsutsusi (Rhododendron) Based on ITS Sequences

TLDR
The sequences of nrDNA internal transcribed spacers, including 5 8S rDNA, were analyzed to reconstruct the phylogeny of Subg Tsutsusi and Subg Pentanthera using parasimony methods and R redowskianum Maxim of subg Therorhodion as outgroup.

[Study on morphological characteristics of pollen grains of Pinellia ternata in different populations].

TLDR
Big difference was found in pollen size among populations of P. ternata; the pollen surface of all populations sticks out with spines, varying in size and density, the base and top part of spinules was different among populations.

Pollen morphology of six species in Thunbergia, of one species each in Staurogyne and Acanthus (Acanthaceae) from China

TLDR
Pollen grains of six species in Thunbergia, Staurogyne and Acanthus in the Acanthaceae from China were examined under SEM and pollen morphological characteristics support the traditional placement of these three genera into three different subfamilies in theAcanthaceae.

A new infrageneric classification and phylogenetic trends in the genusRhododendron (Ericaceae)

TLDR
From a synoptical comparison of morphological, anatomical and phytochemical characters a new system for the genus Rhododendron is proposed, and phylogenetic character progressions and relationships among subgenera, sections and subsections are discussed and illustrated.

A revision of Rhododendron . IV Subgenus Tsutsusi

A revision of Rhododendron subgenus Tsutsusi is presented: section Tsutsusi with 66 species is equivalent to series Azalea subser. Obtusum ; and section Brachycalyx with 15 species includes some