, Volume 39, Issue 4, pp 569–573

Photosynthesis, Transpiration, and Water Use Efficiency of Vegetative and Reproductive Shoots of Grassland Species from North-Eastern China

  • R.Z. Wang

DOI: 10.1023/A:1015660213811

Cite this article as:
Wang, R. Photosynthetica (2001) 39: 569. doi:10.1023/A:1015660213811


The differences in net photosynthetic rate (PN), transpiration rate (E), and water use efficiency (WUE) between the vegetative and reproductive shoots of three native grass species from the grassland of northeastern China [grey-green and yellow green populations of Leymus chinensis (Trin.) Tzvel., Puccinellia tenuiflora (Griseb) Scrib & Merr, Puccinellia chinampoensis Ohwi] were compared. The two type shoots experienced similar habitats, but differed in leaf life-span and leaf area. The leaf PN and WUE for the vegetative shoots were significantly higher than those for the reproductive shoots in the grasses, while their E were remarked lower in the dry season. Relative lower leaf PN and WUE for the reproductive shoots of grassland grasses may explain the facts of lower seed production and the subordinate role of seed in the grassland renewal in north-eastern China.

grassesLeymusphysiological differencesplant water relationsPuccinellia

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© Kluwer Academic Publishers 2001

Authors and Affiliations

  • R.Z. Wang

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