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

• Autorzy: Wang J. , Shi X. , Yin L. , Zhang D.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

biomass allocation; clonal plant; reproductive strategies; rhizome; soil water content

PL

alokacja biomasy; kłącze; rośliny klonalne; strategie rozrodcze; wilgotność gleby

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2012
• Tom: Vol. 60, nr 1
• Strony: 145--152
• Opis fizyczny: Bibliogr. 36 poz.,Rys., tab.,

Twórcy

autor

Wang J.

autor

Shi X.

autor

Yin L.

autor

Zhang D.

• Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology Geography, Chinese Academy of Sciences, Urumqi, 830011, P.R. China ; Graduate University of Chinese Academy of Science, Beijing 100049, P.R. China,

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