Germination Timing and Seedling Growth ofPoa secundaand the Invasive Grass,Bromus tectorum,in Response to Temperature: Evaluating Biotypes for Seedling Traits that Improve Establishment

2016 ◽  
Vol 34 (3) ◽  
pp. 200-208 ◽  
Author(s):  
Daniel L. Mummey ◽  
Mollie E. Herget ◽  
Kristina M. Hufford ◽  
Lauren Shreading
Keyword(s):  
Seedling Growth ◽  
Bromus Tectorum ◽  
Invasive Grass ◽  
Seedling Traits ◽  
Germination Timing ◽  
Response To Temperature

scholarly journals Immature Seedling Growth of Two North American Native Perennial Bunchgrasses and the Invasive Grass Bromus tectorum

2011 ◽  
Vol 64 (4) ◽  
pp. 358-365 ◽  
Author(s):  
Jayanti Ray-Mukherjee ◽  
Thomas A. Jones ◽  
Peter B. Adler ◽  
Thomas A. Monaco
Keyword(s):  
Seedling Growth ◽  
North American ◽  
Bromus Tectorum ◽  
Invasive Grass

Effect of Forage Kochia on Seedling Growth of Cheatgrass (Bromus tectorum) and Perennial Grasses

2018 ◽  
Vol 11 (4) ◽  
pp. 201-207
Author(s):  
Parmeshwor Aryal ◽  
M. Anowarul Islam
Keyword(s):  
Seedling Growth ◽  
Aboveground Biomass ◽  
Bromus Tectorum ◽  
Perennial Grass ◽  
Perennial Grasses ◽  
Grass Species ◽  
Native Grasses ◽  
Native Plant ◽  
Competitive Effect ◽  
Forage Kochia

AbstractForage kochia [Bassia prostrata(L.) A. J. Scott] is competitive with annual weeds and has potential for use in reclamation of disturbed land. However, land managers are reluctant to use forage kochia in revegetation programs due to lack of understanding of its compatibility with or invasiveness in the native plant community. We conducted two greenhouse experiments, one to compare the competitive effect of forage kochia versus perennial grasses on growth of cheatgrass (Bromus tectorumL.) and one to study the effect of forage kochia on growth of native perennial grasses. In the first experiment, a single seedling ofB. tectorumwas grown with increasing neighbor densities (0 to 5 seedlings pot−1) of either forage kochia, crested wheatgrass [Agropyron cristatum(L.) Gaertner ×A. desertorum(Fisch. ex Link) Schultes; nonnative perennial grass], or thickspike wheatgrass [Elymus lanceolatus(Scribn. & J. G. Sm.) Gould; native perennial grass].Bromus tectorumgrowth was reduced moderately by all three perennial neighbors, butA. cristatumandE. lanceolatushad more effect onB. tectorumwhen compared with forage kochia. This experiment was repeated and similar results were observed. In the second experiment, forage kochia was grown with each of four native cool-season grass species: basin wildrye [Leymus cinereus(Scribn. & Merr.) Á. Löve], bluebunch wheatgrass [Pseudoroegneria spicata(Pursh) Á. Löve],E. lanceolatus, and western wheatgrass [Pascopyrum smithii(Rydb.) Á. Löve]. Forage kochia had no effect on height, tiller number, and aboveground biomass of native grasses. Similarly, native grasses did not show a significant effect on forage kochia seedlings. This experiment was also repeated, and forage kochia somewhat reduced the aboveground biomass ofL. cinereusandP. spicata. However, all native grasses significantly reduced change in height, branching, and aboveground biomass of forage kochia. These results suggest that forage kochia interfered withB. tectorumseedling growth, but it showed little competitive effect on native grass seedlings.

Seed mass, seed production, germination and seedling traits in two phenological types of Bidens pilosa (Asteraceae)

2004 ◽  
Vol 52 (5) ◽  
pp. 647 ◽  
Author(s):  
Diego E. Gurvich ◽  
Lucas Enrico ◽  
Guillermo Funes ◽  
Marcelo R. Zak
Keyword(s):  
Seed Production ◽  
Seedling Growth ◽  
Germination Rate ◽  
Seed Mass ◽  
Flowering Phenology ◽  
Early Type ◽  
Normal Type ◽  
Bidens Pilosa ◽  
Seedling Traits ◽  
Seed Sources

Bidens pilosa L. is a summer annual that shows a particular phenological pattern in the Córdoba mountains, Argentina. Some individuals start flowering 1 month after germination (early type), but most of the population starts flowering 4 months after germination (normal type). The aims of this study were to (1) analyse whether differences in flowering phenology affect seed mass and seed production, and (2) assess whether possible differences in seed traits of the two parental phenological types would affect germinability, germination rate, seedling growth and flowering phenology of offspring under laboratory conditions. The study showed that the numbers of seeds per capitulum and per plant were greater in the normal type than in the early type plants. This can be related to plant height, since in the field, normal-type plants are larger than early type plants. However, early type plants produced heavier seeds than normal-type plants. Germination rate was faster in the early type seeds, but total germination was higher in the normal ones. Seedling growth, in terms of height and the date of first flowering, did not differ between the phenological types of parental seed sources. Our results showed that differences in flowering phenology were associated with seed mass and seed production differences. Seed mass appears to be related to germination characteristics but not to seedling growth nor to flowering phenology of offspring.

scholarly journals Impact of Native Grasses and Cheatgrass (Bromus tectorum) on Great Basin Forb Seedling Growth

2013 ◽  
Vol 66 (2) ◽  
pp. 174-180 ◽  
Author(s):  
Hilary Parkinson ◽  
Cathy Zabinski ◽  
Nancy Shaw
Keyword(s):  
Great Basin ◽  
Seedling Growth ◽  
Bromus Tectorum ◽  
Native Grasses

scholarly journals PSI-23 In vitro fermentation characteristics for Cheatgrass (Bromus tectorum L.) and Medusahead (Taeniatherum caputmedusae L.) harvested on Idaho rangeland in different seasons

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 246-247
Author(s):  
Scott Jensen ◽  
Cheyanne A Myers ◽  
Gwinyai Chibisa
Keyword(s):  
Nutritive Value ◽  
Bromus Tectorum ◽  
Species Interaction ◽  
Grass Species ◽  
Invasive Grass ◽  
In Vitro Fermentation ◽  
Molar Proportion ◽  
Creek Watershed ◽  
Species Effect

Abstract Grazing could be used to control invasive grass species on rangeland. However, the characterization of the seasonal changes in the nutritive value of the invasive grass species will enable the development of targeted grazing strategies. Therefore, the objective of this study was to determine the in vitro fermentation characteristics of Cheatgrass (Bromus tectorum L.) and Medusahead (Taeniatherum caputmedusae L.) harvested on Idaho rangeland. Forage samples were collected from the Reynold Creek watershed (Owyhee county, ID) in summer (June 2018), fall (September 2018) and winter (January 2019). A batch culture system was then used to evaluate volatile fatty acid (VFA) production (6 h), and in vitro dry matter (IVDMD) and NDF digestibility (IVNDFD; 24 h and 48 h). All data was analyzed using the MIXED procedure of SAS. There was no season or grass species effect (P ≥ 0.24) on total VFA concentration and the molar proportion of acetate. However, there was a season × grass species interaction (P = 0.04) for the molar proportion of propionate; it was higher for cheatgrass than medusahead in summer, but not in winter and fall. Both season and grass species had no effect (P ≥ 0.11) on the molar proportions of butyrate, valerate, and total branch chain VFA. There was a season × grass species interaction for 24 and 48 h IVDMD and 24 h IVNDFD (Table 1). In addition, 48 h IVNDFD was greater (P < 0.01) when grasses were harvested during the summer compared to the fall and winter seasons. In summary, although there were no differences across invasive grass species when harvested during the fall and winter seasons, the molar proportion of propionate, 24 and 48 h IVDMD and 24 h IVNDFD were greater for cheatgrass compared to medusahead when harvested in summer.

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