Spore Germination in Populations of Schizaea pusilla from New Jersey and Nova Scotia

Kiss, Helen Guiragossian; Kiss, John Z.

doi:10.1086/297606

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…This stability of germinal traits between different origins agrees with results of Kiss and Kiss (1998) obtained with Schizaea pusilla populations, which showed little differences among geographically populations origins. The variation observed in our study can be attributed more to a genotypic difference than to adaptation in a particular environment.…”

Section: Discussionsupporting

confidence: 89%

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

et al. 2011

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Alfalfa (Medicago sativa L.) is one of the most important forage crops in the world. It has been originated from the Caucasus region (Michaud et al., 1988). The species presents purple flowers, a tap root, an erect growth habit, coiled pods and no winter dormancy. This plant improves the yield and quality of the following crops by atmospheric nitrogen fixation (Bruulsema and Christie, 1987 AbstractVariability in germination under controlled conditions with and without salt, seeds characteristics and field emergence were evaluated for 20 landraces of Medicago sativa ssp sativa, a forage legume collected from three sites in Tunisia. Highly significant differences were recorded among the landraces (p < 0.001) for all the characters studied except tegument colour. Number of seeds produced per plant ranged between 378 and 460 seeds g -1 . Emergence responses of seeds were different among landraces and sites and their values ranged between 12 to 45%. Salt stress (150 mM) caused substantial reduction in final and rate of germination of all the landraces with an average decline of 62.4 and 69.7%, respectively. Final germination values ranged from 26.5 to 75.75% when supplied distilled water. However, final germination values ranged from 10.75 to 32.5% when the seeds were exposed to saline water (150 mM). Rate of germination ranged from 12.75 to 63.25% and from 6.25 to 21.25% at non-saline and salt stress, respectively. Cluster analysis separated the 20 landraces into four clusters. Three landraces in the first cluster had the lowest germination and the greatest field emergence. One landrace composed the second cluster and showed both high germination and field emergence. Two landraces in the third cluster presented greater germination and low emergence. The other landraces constituted the fourth cluster and had intermediates emergence and germination.Additional key words: arid land; diversity; salt stress; seeds. Resumen Variabilidad en la germinación y en la emergencia de variedades autóctonas de Medicago sativa en diferentes oasis de TúnezSe evaluó la germinación en laboratorio con y sin estrés salino, así como las características de las semillas y la emergencia de 20 poblaciones de la leguminosa forrajera Medicago sativa ssp sativa, procedentes de tres localidades de Túnez. Se observaron diferencias altamente significativas entre las poblaciones (p < 0,001) en todos los caracteres estudiados excepto en el color del tegumento. El número de semillas por gramo varió entre 378 y 460. La emergencia de las semillas fue diferente entre las poblaciones y las localidades (variaron entre el 12 y el 45%). El estrés salino (150 mM) causó una fuerte reducción en todas las poblaciones, tanto en la germinación final como en el porcentaje de germinación, con una reducción media del 62,4 y 69,7%, respectivamente. Los valores de germinación finales variaron entre 26,5 y 75,75% y entre 10,75 y 32,5% con agua destilada y estrés salino, respectivamente. El porcentaje de germinación varió desde el 12,75 al 63,25% y del 6,25 al 21,25% en ...

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Section: Discussionsupporting

confidence: 89%

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

et al. 2011

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“…These results were in agreement with electrophoretic data of homosporous Pteridophytes compiled by Soltis and Soltis (1989), which revealed a lower interpopulational divergence caused by a high gene flow through spores due to their long dispersion distance. Kiss and Kiss (1998) in a study with Schizaea pusilla also found larger differences in the germination between individuals within populations and lower differences between geographically-separate populations. These results referred to the spores' storage conditions as well as to their culture.…”

Section: Discussionmentioning

confidence: 85%

Variability in the germination of spores among and within natural populations of the endangered tree fern Dicksonia sellowiana Hook. (Xaxim)

Gomes¹,

Randi

Puchalski³

et al. 2006

Braz. arch. biol. technol.

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The objective of this study was to analyze the existing variability in the germination of individuals' spores collected from two natural populations of Dicksonia sellowiana in southern Brazil. The largest intrapopulational variation was observed for the spores germination. These results suggested the existence of adaptative strategies that favored the gradual and continuous entrance of new individuals into the gametophytic population.The behavior of the individuals of the species within each population followed a similar pattern of initial development, in spite of conspicuous differences in the population structure. This showed a low differentiation between the populations and the existence of adaptative strategies which were common to both communities.

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“…Light has been found to govern the development stage of whole gametophyte (Turnwald et al 1999). Kiss and Kiss (1998) reported that light frequency in the red region is found to promote spore germination more than in far-red region. Light not only regulates the growth mechanism in haploid gametophyte, but it also affects development of sporophyte due to involvement of a photoreceptor phytochrome (Christensen et al 1998).…”

Section: Discussionmentioning

confidence: 99%

In Vitro Propagation of Angiopteris Evecta Using Spores

Bhatia¹,

Cupitt

Ashwath

2001

BIOTROPIA

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Techniques of establishing Angiopleris evecta plants in vitro were studied. Soaking of A. evecta spores in water for 24 hours markedly reduced spore contamination. Soaking of the spores in 1-2 % of sodium hypochlorite for less than 5 minutes allowed satisfactory disinfestation without affecting spore viability. Lower concentration of minerals (1/4 MS), presence of charcoal in the medium and exposure of the spores to light were crucial for spore germination and gainetophytc development of A. evecta.

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Spore Germination in Populations of Schizaea pusilla from New Jersey and Nova Scotia

Cited by 10 publications

References 11 publications

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Variability in the germination of spores among and within natural populations of the endangered tree fern Dicksonia sellowiana Hook. (Xaxim)

In Vitro Propagation of Angiopteris Evecta Using Spores

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