| Publication Type | J |
| Authors | Wilen, CA; Holt, JS |
| Author Full Name | Wilen, CA; Holt, JS |
| Title | Physiological mechanisms for the rapid growth of Pennisetum clandestinum in Mediterranean climates |
| Source | WEED RESEARCH |
| Language | English |
| Document Type | Article |
| Keywords Plus | LOW-TEMPERATURE; PHOTOSYNTHESIS; PLANTS; YIELD; LIGHT |
| Abstract | Pennisetum clandestinum Hochst ex Chiov. (kikuyugrass) is a C-4 grass that has become an invasive weed in temperate climates. We examined ecophysiological mechanisms that have allowed it to become a successful weed in these locations by comparing P. clandestinum and two other common turfgrass species, Festuca arundinacea Schreb. (tall fescue cv. Mojave), a C-3 cool-season grass, and Stenotaphrum secundatum (Walt.) Kuntze (St. Augustinegrass), a C-4 warm-season grass, grown in a warm or cool growth regime. We measured rates of photosynthesis over a range of leaf temperatures and also measured growth rate parameters of these species. At leaf temperatures between 25 degrees C and 40 degrees C P. clandestinum maintained the highest rates of photosynthesis in both temperature regimes. Under warm temperatures, this species rapidly increased biomass and leaf area to a greater extent than either of the other two grasses. Theoretical whole plant photosynthesis (mean leaf areaxmean photosynthetic rate) was higher for P. clandestinum than for the other two species in both growth regimes and over most leaf temperatures. Our results suggest that P. clandestinum is a successful weed in Mediterranean climates as a result of its capacity to photosynthesize over the full range of temperatures found in those climates,its rapid growth during warm weather and its apparent tolerance to moderately cool temperatures. |
| Reprint Address | Wilen, CA (reprint author), UNIV CALIF RIVERSIDE,DEPT BOT & PLANT SCI,RIVERSIDE,CA 92521, USA. |
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| Cited Reference Count | 34 |
| Times Cited | 9 |
| Total Times Cited Count (WoS, BCI, and CSCD) | 9 |
| Publisher | BLACKWELL SCIENCE LTD |
| Publisher City | OXFORD |
| Publisher Address | OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL |
| ISSN | 0043-1737 |
| 29-Character Source Abbreviation | WEED RES |
| ISO Source Abbreviation | Weed Res. |
| Publication Date | JUN |
| Year Published | 1996 |
| Volume | 36 |
| Issue | 3 |
| Beginning Page | 213 |
| Ending Page | 225 |
| Digital Object Identifier (DOI) | 10.1111/j.1365-3180.1996.tb01651.x |
| Page Count | 13 |
| Web of Science Category | Agronomy; Plant Sciences |
| Subject Category | Agriculture; Plant Sciences |
| Document Delivery Number | UU855 |
| Unique Article Identifier | WOS:A1996UU85500002 |
