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- aggregation classification "A1".
- aggregation creator B103312.
- aggregation creator B103313.
- aggregation creator person.
- aggregation creator person.
- aggregation date "2000".
- aggregation format "application/pdf".
- aggregation hasFormat 172786.bibtex.
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- aggregation isPartOf urn:issn:0032-0889.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Biology and Life Sciences".
- aggregation title "Can meristematic activity determine variation in leaf size and elongation rate among four Poa species?: a kinematic study".
- aggregation abstract "We studied inherent variation in final leaf size among four Poa spp. that live at different elevations. The average final length of leaf 7 of the main stem of the smallest species (Poa alpina) was only one-half that of the largest species (Poa trivialis); it was correlated with leaf elongation rate, but not with the duration of leaf elongation. A faster rate of leaf elongation rate was associated with (a) larger size of the zone of cell expansion, and (b) faster rates of cell production (per cell file) in the meristem, which in turn were due to greater numbers of dividing cells, whereas average cell division rates were very similar for all species (except Poa annua). Also we found that the proliferative fraction equaled 1 throughout the meristem in all species. It was remarkable that rates of cell expansion tended to be somewhat higher in the species with slower growing leaves. We discuss the results by comparing the spatial and material viewpoints, which lead to different interpretations of the role of cell division. Although the presented data do not strictly prove it, they strongly suggest a regulatory role for cell division in determining differences in growth rate among the present four Poa spp.".
- aggregation authorList BK265048.
- aggregation endPage "855".
- aggregation issue "2".
- aggregation startPage "845".
- aggregation volume "124".
- aggregation aggregates 4149423.
- aggregation isDescribedBy 172786.
- aggregation similarTo pp.124.2.845.
- aggregation similarTo LU-172786.