Tasa relativa de crecimiento de herbáceas con potencial de restauración en suelos degradados del bosque La Primavera, Jalisco, México

2018 ◽  
Vol 28 (2) ◽  
pp. 58-66 ◽  
Author(s):  
Milca Mayo-Mendoza ◽  
Rosa de Lourdes Romo-Campos ◽  
Pablo Medina-Fernández
Keyword(s):  
Cosmos Bipinnatus

39 especies herbáceas fueron sembradas en suelos degradados del bosque La Primavera, con dos tratamientos, 1: siembra con todas las especies y 2: siembra con las fabáceas y 15 días después se agregó el resto de las especies, en parcelas de 1 m-2. Con Análisis de Varianza (Anova) analizamos cobertura, densidad y tasa de crecimiento (cociente del área foliar y tasa de asimilación neta). La Dalea leporina registró la cobertura más alta y la Cosmos bipinnatus la mayor densidad. Las asteráceas registraron el crecimiento más alto. Desmodium sericophyllum y D. aparines mostraron el cociente del área foliar más alto y Cosmos bipinnatus la tasa de asimilación mayor. La presencia de otras especies no afectó la densidad ni el crecimiento de las fabáceas; además, mostraron ajustes morfológicos y fisiológicos con ventajas competitivas para establecerse en suelos degradados, por lo que son la mejor opción para iniciar procesos de sucesión vegetal para restaurar suelos en La Primavera.

Ontogeny and histochemistry of the intermediate and reproductive apices of Cosmos bipinnatus var. Sensation in response to gibberellin A3 and photoperiod

1973 ◽  
Vol 51 (3) ◽  
pp. 535-551 ◽  
Author(s):  
Marje Molder ◽  
John N. Owens
Keyword(s):  
Gibberellic Acid ◽  
Response Rate ◽  
Intermediate Stage ◽  
Floral Initiation ◽  
Transitional Stage ◽  
Zonation Pattern ◽  
Short Day ◽  
Cosmos Bipinnatus ◽  
Cytological Features ◽  
Short Days

Plants of Cosmos bipinnatus Cav. ‘Sensation’ (a quantitative short-day plant) were grown under continuous conditions favorable or unfavorable for flowering, and some plants in each group were treated with gibberellic acid (GA3). Floral apices of Cosmos are formed by the transition of previously vegetative apices. The vegetative apex shows a cytohistological zonation pattern superimposed upon a tunica–corpus organization. The vegetative apex passes into an intermediate stage presumed typical of many plants held under non-inductive conditions. This stage is marked by many cytological features characteristic of both reproductive and vegetative apices but leaves continue to be produced. The presence of the intermediate stage accounts for conflicting results obtained in physiological studies since there is great variation in response rate depending on age of plant and the stage of the apex at the start of an experiment. This stage is followed by a typical transitional stage marked by an increase in RNA content, increased mitotic activity, and a change in zonation. Elongation of the apex and internodes occurs followed by initiation of the involucral bracts and floret primordia, marking the beginning of the prefloral and inflorescence stages respectively.GA3 specifically induces Cosmos to flower under non-inductive conditions thereby influencing floral initiation in a facultative short-day plant. Microscopic examination of the rate of apical transition revealed that GA3 substituted effectively for short days but was not as efficient an inducer as were short days.

scholarly journals Nectar feeding behavior of some butterflies in the botanical garden of Dhaka university

2015 ◽  
Vol 42 (1) ◽  
pp. 85-90
Author(s):  
Murshida Begum ◽  
Ummey Habiba ◽  
Moksed Ali Howlader
Keyword(s):  
Feeding Behavior ◽  
Corolla Tube ◽  
Botanical Garden ◽  
Tagetes Erecta ◽  
Butterfly Species ◽  
Tephrosia Purpurea ◽  
Nectar Feeding ◽  
Cosmos Bipinnatus ◽  
Eurema Hecabe ◽  
Highly Correlated

Nectar feeding behavior of butterflies belonging to the families Nymphalidae, Danaidae, Pieridae, Lycaenidae and Papilionidae were studied in the Botanical garden of Dhaka University. The highest and the lowest duration of searching time was 39 ± 2 and 36 ± 5 seconds respectively for the Catopsila pomona and Zizina otis. The highest and the lowest duration of feeding was 13.0 ± 1 and 9.9 ± 0.9 seconds respectively for the Danaus chrysippus and Zizina otis. The longest proboscis (12.6 ± mm) was recorded in Danaus chrysipus. The deepest corolla (22 ± 5mm) was found in the flower of Cosmos bipinnatus plants. The proboscis of 4 butterfly species named Eurema hecabe, Jononia almana, Catochrysopes strabo and D. chrysipus was highly correlated with the corolla tube of Cosmos bipinnatus, Tephrosia purpurea and Tagetes erecta repectively.Bangladesh J. Zool. 42(1): 85-90, 2014

scholarly journals Morphological variation of Cosmos bipinnatus (Asteraceae) and its relation to abiotic variables in central Mexico

2015 ◽  
Vol 88 (1) ◽  
Author(s):  
Maribel Paniagua-Ibáñez ◽  
Alfredo López-Caamal ◽  
Patricia Mussali-Galante ◽  
Enrique Sánchez-Salinas ◽  
Ma. Laura Ortiz-Hernández ◽  
...  
Keyword(s):  
Morphological Variation ◽  
Central Mexico ◽  
Cosmos Bipinnatus ◽  
Abiotic Variables

scholarly journals Contribución al mejoramiento genético de cosmos (Cosmos bipinnatus Cav.)

1994 ◽  
Vol I (01) ◽  
pp. 184-187
Author(s):  
J.M. Mejía-Muñoz ◽  
◽  
M.A. Arroyo-Rojas
Keyword(s):  
Cosmos Bipinnatus

scholarly journals Quantitative variation of flavonoids and related compounds in Cosmos bipinnatus

2015 ◽  
Vol 48 (2) ◽  
pp. 317-325 ◽  
Author(s):  
Koho Saito
Keyword(s):  
Phenolic Acids ◽  
Paper Chromatography ◽  
Quantitative Variation ◽  
Spectrophotometric Procedure ◽  
Flavonoid Compounds ◽  
Cosmos Bipinnatus ◽  
Related Compounds

Quantitative variation of nine flavonoid compounds and two related phenolic acids in several parts of three garden varieties of <i>Cosmos bipinnatus</i> Cav. were examined by; means of paper chromatography followed by a spectrophotometric procedure.

scholarly journals Biosolid Residues as Soilless Media for Growing Wildflower Sod

2001 ◽  
Vol 11 (2) ◽  
pp. 194-199
Author(s):  
Bruce R. Roberts ◽  
Henry F. Decker ◽  
Kenneth J. Bagstad ◽  
Kathleen A. Peterson
Keyword(s):  
Slow Release ◽  
Dry Weight ◽  
Echinacea Purpurea ◽  
Single Application ◽  
Slow Release Fertilizer ◽  
Coreopsis Tinctoria ◽  
Purple Coneflower ◽  
Shoot Ratio ◽  
Growing Medium ◽  
Cosmos Bipinnatus

Two biosolid-containing waste media [sewage sludge compost and incinerated biosolids (flume sand)] were tested individually, together, and in combination with a commercial growing medium for growing wildflower sod in greenhouse trials over a 3-year period. A medium composed of flume sand and Metromix (7:3 weight/weight) in 7.5 {XtimesX} 10.5 {XtimesX} 2-inch deep (19 {XtimesX} 27 {XtimesX} 5-cm) plastic trays seeded at 20 oz/1000ft2 (6.1 g·m-2) with cosmos (Cosmos bipinnatus), cornflower (Centaurea cyannis), plains coreopsis (Coreopsis tinctoria), white yarrow (Achillea millefolium) and purple coneflower (Echinacea purpurea) produced a suitable wildflower sod in 10 to 12 weeks. A single application of slow release fertilizer (Osmocote 14-14-14, 14N-4.2P-11.6K) applied as a top dressing had no significant effect on sod development; however, a 4-mil [0.004-inch (0.10-mm)] polyethylene barrier placed in the base of each container resulted in increased dry weight accumulation and a higher root to shoot ratio relative to sod grown without plastic.

scholarly journals Chromosome numbers of invasive and potentially invasive species in the flora of the Republic of Altai. Post V

Turczaninowia ◽  
2021 ◽  
Vol 24 (4) ◽  
pp. 99-107
Author(s):  
Elena Yu. Zykova ◽  
Tatyana V. Pankova ◽  
Maria N. Lomonosova
Keyword(s):  
Chromosome Numbers ◽  
Western Siberia ◽  
Invasive Plant ◽  
Xanthium Strumarium ◽  
Published Data ◽  
Common Distribution ◽  
Cosmos Bipinnatus ◽  
History Of ◽  
Eriochloa Villosa ◽  
The Republic

Chromosome numbers (2n) of 15 invasive and potentially invasive plant species from the families Asteraceae, Brassicaceae, Caryophyllaceae, Malvaceae, Onagraceae, Papaveraceae, Plantaginaceae, Poaceae, Polygonaceae, Portulacaceae, and Rosaceae are reported on the samples collected in the Republic of Altai. To determine the chromosome number (ploidy level), the method of direct counting was used. Among studied species, chromosome complements for Persicaria orientalis (2n = 22), Potentilla norvegica (2n = 42), Veronica persica (2n = 28) were first examined from Russia; for Papaver rhoeas (2n = 14) and Rumex obtusifolius (2n = 20) – from Asian part of Russia; for Bromus squarrosus (2n = 14), Cosmos bipinnatus (2n = 24), and Eriochloa villosa (2n = 54) – from Siberia. Abutilon theophrasti (2n = 42) and Lepidium densiflorum (2n = 32) were first studied from Western Siberia; Epilobium ciliatum subsp. adenocaulon (2n = 36), Portulaca oleracea (2n = 36), Spergularia rubra (2n = 36), and Xanthium strumarium (2n = 36) – from the Republic of Altai. Common distribution and the history of floristic findings of these species in the Republic of Altai are given. Previously published data on chromosome numbers from Russia are cited.

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