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| Web URL(s): | http://www.nrcresearchpress.com/doi/pdf/10.1139/b92-178
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Liu, Youqi;
Dengler, Nancy G. |
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| Author Affiliation: | Department of Biology, Hubei University; Department of Botany, University of Toronto |
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| Title: | Development of open and closed leaf sheaths in Festuca trachyphylla and Festuca rubra (Poaceae) |
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| Source: | Canadian Journal of Botany. Vol. 70, No. 7, July 1992, p. 1417-1428. |
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| Publishing Information: | Vancouver, British Columbia: The National Research Council of Canada. |
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| # of Pages: | 12 |
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| Related Web URL: | http://www.nrcresearchpress.com/doi/abs/10.1139/b92-178
Last checked: 09/29/2015
Notes: English abstract only |
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| Keywords: | TIC Keywords: Leaf sheath; Festuca rubra; Festuca brevipila; Poaceae; Development; Growth
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| Abstract/Contents: | "The development of the leaf sheaths in two species of Festuca, subgenus Festuca, Festuca trachphylla (Hackel) Krajina with open leaf sheaths and Festcua rubra L. s.l. with closed sheaths is compared to determine the developmental basis of this taxonomically important character. In both species serial cross sections of seedlings, scanning electron microscopy, and dissections of whole plants showed that a short tubular leaf base is formed early during the second plastochron of leaf development. Later during the same plastochron, ligule formation delimits sheath and blade; at this stage, the tubular portion occupies about one-half (200-500 um) of the incipient leaf sheath. Differential extension growth of the distal open portion and proximal closed section of the sheath results in the primarily open or closed sheaths that characterize the mature leaves of the two species. The longitudinal splitting of the tubular leaf sheath in a position opposite the midvein in F. rubra is anticipated by a zone of small-diameter cells within the ground tissue, but no other structural correlates of sheath mechanical strength and persistence were detected. Our observations indicate that subtle shifts in the distribution of growth during leaf expansion result in the contrasting character states exemplified by these two species." |
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| Language: | English |
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| References: | 42 |
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| Note: | Abstract also appears in French
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Liu, Y., and N. G. Dengler. 1992. Development of open and closed leaf sheaths in Festuca trachyphylla and Festuca rubra (Poaceae). Can. J. Bot. 70(7):p. 1417-1428. |
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| Web URL(s):
http://www.nrcresearchpress.com/doi/pdf/10.1139/b92-178
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QK 1 .C3 |
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