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Bixuan CHENG, Chao YU, Lijun ZHOU, et al. Pollen Morphologies of R. odorata and R. chinensis from Rosa sect. chinenses DC.[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2021, 36(2): 314-323. DOI: 10.12101/j.issn.1004-390X(n).201908032
Citation: Bixuan CHENG, Chao YU, Lijun ZHOU, et al. Pollen Morphologies of R. odorata and R. chinensis from Rosa sect. chinenses DC.[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2021, 36(2): 314-323. DOI: 10.12101/j.issn.1004-390X(n).201908032
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Pollen Morphologies of R. odorata and R. chinensis from Rosa sect. chinenses DC.

    Graphical Abstract
    • Abstract
  • PurposesBy observing pollen morphology, to analyze the evolutionary relationships of the species of Rosa sect. chinenses.
    MethodsTwenty-five individuals that belong to R. sect. chinenses were used as the materials. Using electron scanning microscope, twelve characters of pollen grains were observed and analyzed. Meanwhile a cluster analysis was conducted.
    ResultsPollen dispersed as monads, prolate and perprolate (P/E arranged from 1.98 to 2.35); size medium (36.06-42.81) μm×(16.39-20.07) μm; tricolpate; perforate-striateornamentation. Characters of the exine have a certain similarity among all 25 individuals, but the exine can still be subdivided according to some non-quantitative traits such as striate and fovela. The results of cluster analysis showed that all pollen materials were clustered into 4 groups.
    ConclusionR. odorata germplasms are generally at a more evolved level in Rosa L.
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