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1

Life strategies in salt marsh communities of the East Frisian North Sea Coast [North-Western Germany]

100%
Hensen I.
Fragmenta Floristica et Geobotanica
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1998
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tom 43
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nr 2
2

Variation of sexual and clonal reproduction in Eremosparton songoricum (Litv.) (Fabaceae) on drought in arid regions: an experimental approach

80%
Wang J.-C., Shi X., Yin L.-K., Zhang D.-Y.
Polish Journal of Ecology
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2012
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tom 60
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nr 1
Clonal plants combine sexual and clonal reproduction, which contribute differently to plant fitness. We investigated the consequence of natural selection on the two reproductive modes and the ecological factors that affect the reproductive modes of Eremosparton songoricum (Litv.) Vass. in order to understand the reproductive strategies of a clonal plant and the relationship between sexual and clonal reproduction. Morphological characteristics and biomass allocation patterns were m easured and compared at the clonal fragment level in two natural populations (riverside population A and hinterland population B) in the Gurbantunggut Desert, China. The flowering plant ratio, inflorescence number per plant, flower number per raceme, fruit number, mass of 100 seeds, root biomass, fruit biomass and ramet height were significantly higher, whereas fruit set, ramet density, rhizome biomass and length, and root number were significantly lower, in population A compared with those in population B. We estimated that the importance of clonal reproduction varies in two populations of E. songoricum, and the investment adjustment in the two reproductive modes may be based on cost required for each new plant to generate the more survival progeny in the plant life time.
3

Trade-off of sexual and asexual recruitment in a dominant weed Ligularia virgaurea (Maxim.) in Alpine grasslands (China)

80%
Wu G.-L., Hu T.-M., Liu Z.-H.
Polish Journal of Ecology
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2010
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tom 58
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nr 1
Ligularia virgaurea (Maxim.) is a typical naturally-occurring native noxious weed, widely distributed in alpine grasslands of the Tibetan Plateau, China. Three field sampling plots (30 m ´ 50 m) dominated by L. virgaurea were selected to study its population colonization mode and the relationship between sexual- and clonalrecruitment in alpine meadow of the QinghaiTibetan Plateau, NW China. Field investigations were conducted on its soil seed bank, seed rain and the individuals of new recruitment (seedlings and ramets) to study its sexual and asexual recruitment. And, 46 individuals which produced the seeds were selected randomly to study their relationship between seed production and ramet production. Results showed that there were more ramets (26.23 ramets m⁻²) and less seedlings (6.70 seedlings m⁻²) and a mean value of seed rain was close to 8.04 seeds m⁻², but the soil seed bank for this species was not found in study sites. Significantly negative correlations (r = – 0.416, P <0.001) between seed number per individual and ramet number per adult individual were found for L. vrigaurea in studied alpine grasslands. Our results revealed that clonal reproduction was the main population colonization mode. In addition, there was a significantly negative relationship between seed production and ramets for this species.
4
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Preservation of features of anatomical polymorphism of Deschampsia antarctica É. Desv. (Poaceae) during in vitro clonal reproduction

80%
Nuzhyna N., Kunakh V., Poronnik O., Parnikoza I.
Acta Agrobotanica
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2021
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tom 74
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nr 1
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