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A biosystematic study of Leptochloa with special emphasis on Leptochloa dubia (Gramineae: Chloridoideae)
| dc.contributor.advisor | Gould, Frank W. | |
| dc.creator | Valls, José Francisco Montenegro | |
| dc.date.accessioned | 2020-08-21T21:09:31Z | |
| dc.date.available | 2020-08-21T21:09:31Z | |
| dc.date.issued | 1978 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/DISSERTATIONS-297614 | |
| dc.description | Vita. | en |
| dc.description.abstract | Numerous taxa of genera Leptochloa, Diplachne, Bewsia, Cypholepsis, Gouinia, Kengia, Pogonarthria, Psilolemma, Trichoneura, and Tripogon were studied (1) to determine the systematic relationships of Leptochloa, (2) to establish the correct generic placement of Leptochloa dubia, and (3) to determine the extent and causes of variation in L. dubia. The systematic relationships of Leptochloa were determined by the examination of geographic distribution, habit and branching pattern, seedling characteristics, stem structure, ligule characteristics, leaf0blade anatomy and photosynthetic pathways, leaf-blade epidermis, inflorescence morphology, breeding systems, caryopsis and embryo type, and chromosome numbers. The data support congeneric status for Leptochloa and Diplachne, but Bewsia, Kengia, Gouinia, Trichoneura, Tripogon, Pogonarthria and Psilolemma are recognized as distinct genera. The incorrect placement of Leptochloa monticola became evident in this study. This species probably is a member of the Arundineae-Danthonieae group. Leptochloa dubia was found to be correctly placed in Leptochloa in spite of strong similarities with species of Kengia and Gouinia.. | en |
| dc.format.extent | xi, 205 leaves | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | eng | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
| dc.subject | Leptochloa | en |
| dc.subject | Range Science | en |
| dc.subject.classification | 1978 Dissertation V195 | |
| dc.subject.lcsh | Leptochloa | en |
| dc.title | A biosystematic study of Leptochloa with special emphasis on Leptochloa dubia (Gramineae: Chloridoideae) | en |
| dc.type | Thesis | en |
| thesis.degree.grantor | Texas A&M University | en |
| thesis.degree.name | Doctor of Philosophy | en |
| dc.type.genre | dissertations | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
| dc.publisher.digital | Texas A&M University. Libraries | |
| dc.identifier.oclc | 4552894 |
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