Seed production of Menyanthes trifoliata inside and outside a Phragmites australis canopy
1999
Haraguchi, A. (Hokkaido Univ., Sapporo (Japan). Faculty of Agriculture)
Reproduction of Menyanthes trifoliata L. was compared inside and outside a Phragmites australis (Cav.) Trin. ex. Steud. canopy in a floating peat mat in Mizorogaike Pond, Central Japan. Different factors influenced the reproductive organs of M. trifoliata during the seed production process inside and outside the P. australis canopy. M. trifoliata inside the canopy produced a low number of flower buds, but the inflorescences showed a higher survival rate than at the open site, hence inflorescence density per unit area did not differ significantly. However, both the seed setting ratio and the total number of seeds produced were much lower within the Phragmites site
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