Factors influencing seed production of Phragmites australis

Ishii, Jun; Kadono, Yasurō

doi:10.1016/s0304-3770(01)00218-2

Cited by 47 publications

(54 citation statements)

References 32 publications

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“…Phragmites australis growing at its northern limit of its geographic distribution in North America and Europe is sterile (Dahl 1934;Small and Catling 2001). Addition of pollen increased seed set in P. australis populations in Japan, indicating that seed production in the species is pollen-limited (Ishii and Kadono 2002). No resource limitation was observed as there were no significant differences in seed set caused by inflorescence-cutting treatments (Ishii and Kadono 2002).…”

Section: Reproductionmentioning

confidence: 94%

“…The species is self-incompatible within clones (Gustafsson and Simak 1963) and cross-pollination takes place primarily via wind (Haslam 1972). While self-pollination yielded 2.8 and 8.9% seed set in two Japanese populations at Nishinakajima and Torikainaka, respectively, cross-pollination produced 52.4 and 64.4% seed set in the same two populations (Ishii and Kadono 2002). Fertility of florets varies from 1 to 55% (Hürlimann 1951; Fig.…”

Section: Reproductionmentioning

confidence: 99%

“…Pollen development was documented to cease at the tetrad stage of P. australis in India (Satyamurty and Seshavatharam 1984). However, Ishii and Kadono (2002) recently documented high pollen fertility (88.9 to 99.6%) in octoploid and decaploid populations in Japan.…”

Section: Reproductionmentioning

confidence: 99%

“…However, in other Australian populations, seeds were found to be important for its spread. The average seed set in 12 populations in Japan was 9.7%, ranging from 0.1 to 59.6% (Ishii and Kadono 2002). Phragmites australis growing at its northern limit of its geographic distribution in North America and Europe is sterile (Dahl 1934;Small and Catling 2001).…”

Section: Reproductionmentioning

confidence: 99%

See 3 more Smart Citations

The biology of Canadian weeds. 129. Phragmites australis (Cav.) Trin. ex Steud.

Mal¹,

Narine²

2004

Can. J. Plant Sci.

100

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-common reed, is a perennial, emergent aquatic plant with annual cane-like stems developed from an extensive rhizome system. It grows in low-lying wet areas such as fresh and salt-water marshes, drainage ditches, shallow lake edges, sandy banks, roadsides, woodlands and rocky places. Stems can reach up to 6.0 m in height, vary in diameter from 4 to10 mm and have 10 to 25 cm long hollow internodes. Clones are extended by perennial rhizomes with extensive aerenchymatous tissue that supplies oxygen. Roots develop from rhizomes and other submerged parts of shoots. Leaves are smooth, alternate with narrow-lanceolate laminae, 20 to 70 cm long and 1 to 5 cm broad, and tapering to long slender points. The inflorescence is a terminal panicle, often 30 cm long, dull purple to yellow, with main branches bearing many spikelets. Seed production and germination are extremely variable and comparatively rare in many populations. Phragmites australis carries out photosynthesis through the C 3 pathway (or a variation thereof). Studies of genetic variation through isozyme and other molecular methods suggest that the populations are very closely related, and that variation in the metapopulation is small. Chloroplast DNA sequences of two non-coding regions indicate that non-native introduced genotypes of P. australis have displaced native genotypes in parts of North America. Phragmites australis often forms extensive monocultures in North America. As a consequence, habitat quality and species diversity have been documented to decline. However, in roadside populations it is effective in taking up many typical heavy metals that originate from nearby highways and buildings. Phragmites australis is found in all Canadian provinces and the Northwest Territories, but not in the Yukon Territory or Nunavut. The infestation of P. australis is most severe in the Great Lakes region and its migration is primarily mediated through rivers, canals and waterways but roadways are increasingly becoming important. Changes in the water regime have been linked to its success and could ultimately result in changes to the floristic composition of a habitat. Rodeo™, an aqueous solution of the isopropylamine salt of glyphosate, is most frequently used to control P. australis populations. Other methods of control include cutting, burning, and drainage of the species' habitat. As P. australis is considered to be invasive in North America, introduction of biological control agents is now being investigated. Can. J. Plant Sci. 84: 365-396. Le roseau commun Phragmites australis (Cav.) Trin. ex Steud. est une vivace aquatique dont le vaste système de rhizomes donne chaque année des tiges ressemblant à des cannes. L'espèce pousse dans les dépressions humides comme les marais d'eau douce et salants, les fossés de drainage, la rive des lacs peu profonds, les berges sablonneuses, le bord des routes, les boisés et les endroits rocailleux. Les tiges atteignent parfois jusqu'à 6,0 m de hauteur et leur diamètre varie de 4 à 10 mm, avec de longues sections creuses de 10 à ...

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Section: Reproductionmentioning

confidence: 94%

Section: Reproductionmentioning

confidence: 99%

Section: Reproductionmentioning

confidence: 99%

Section: Reproductionmentioning

confidence: 99%

See 2 more Smart Citations

The biology of Canadian weeds. 129. Phragmites australis (Cav.) Trin. ex Steud.

Mal¹,

Narine²

2004

Can. J. Plant Sci.

100

View full text Add to dashboard Cite

show abstract

“…In populations of P. australis that have been examined for genetic relatedness, there is usually a great deal of genetic diversity that is indicative of seeds as a primary reproductive propagule (Belzile et al, 2010;Stabile et al, 2016). The seeds of P. australis mature at the end of its growing season, from September to October, and it can take years after sprouting for flowering shoots to emerge (Ishii and Kadono, 2002;Saltonstall et al, 2010).…”

Section: Sexual Reproductionmentioning

confidence: 99%