Positive photoblastic response of seed germination in Eriosyce subgen: Neoporteria (Britton &amp; Rose) Helmut Walter (Cactaceae)

Guerrero, Pablo; Alves-Burgos, Lua; Peña-Gómez, Francisco T.; Bustamante, Ramiro O.

doi:10.4067/s0717-66432011000100013

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…We found no relationship between RLG and seed mass. Germination of almost all species was found to be light dependent, which is in agreement with previous studies in cactus species (Flores et al, 2006;Gurvich et al, 2008;Ortega-Baes et al, 2010;Guerrero et al, 2011;Rojas-Aréchiga et al, 2012). By contrast, Flores et al (2011) found a weak negative but significant relationship between seed mass and RLG; this difference may be due to the broader seed mass range used in that work (0.046 -16 mg) than the range we used (0.087 -1.958 mg).…”

Section: Discussionsupporting

confidence: 91%

“…The effect of light on germination has been well studied in cactus species (Flores et al , 2011). Species can be either light dependent (positively photoblastic) or show no light requirement for germination (Rojas-Aréchiga et al , 1997; Rojas-Aréchiga and Vázquez-Yañes, 2000; Flores et al , 2006); the latter phenomenon (negative photoblasticity) seems to be a non-existing response in cactus species (Guerrero et al , 2011). In a study of 136 cactus species from different countries, Flores et al (2011) found that seed mass was related to light dependence.…”

Section: Introductionmentioning

confidence: 99%

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Seed mass, germination and seedling traits for some central Argentinian cacti

et al. 2014

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Seed size is one of the most important traits in the regenerative phase of a plant's life cycle; however, for cactus species the relationship of seed size and germination characteristics and seedling traits is still unclear. We studied the relationship between seed mass and germination and seedling characteristics in 17 cactus species from central Argentina, belonging to different genera and life forms. We measured seed mass, total seed germination, light requirements for germination and mean time to germination for these 17 cacti species; in addition, we recorded seedling size and shape in 15 species. To test light requirements we performed germination experiments under laboratory conditions at 25/15°C (day/night temperatures) and under light or dark conditions. We also calculated seedling volume by measuring seedling height and width. A shape index was obtained by dividing height by width (a value of 1 indicates ‘globose’ seedlings, whereas, as this value increases, seedlings become ‘columnar’). We found no significant relationship between seed mass and any of the germination characteristics considered. However, species with heavier seeds produced bigger seedlings, which were more cylindrical. Adult growth was not totally determined by seedling ‘growth form’, because some species that had globose seedlings were columnar at the adult stage.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Seed mass, germination and seedling traits for some central Argentinian cacti

et al. 2014

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“…Diversas estrategias de conservación se han diseñado para reducir esta pérdida de especies, incluyendo métodos tanto in situ como ex situ. Las estrategias in situ tienen como inconveniente que de no estar coordinadas con programas de manejo integrales para la zona afectada pueden llevar a resultados poco exitosos [7] . Por su parte, las estrategias in vitro, como una alternativa ex situ, presentan ciertas ventajas como un mejor control de las condiciones de conservación y los altos números de individuos que pueden generarse a partir de un número limitado de especímenes [8] .…”

Section: Introduccionunclassified

Requerimientos para la Germinación y Cultivo in vitro de Plántulas de Scrophularia depauperata BOISS. : Una Herbácea Endémica de Turquía*

2021

jecet

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“…Various conservation strategies have been designed to reduce this loss of species, including both in situ and ex situ methods. In situ strategies have the disadvantage that if they are not coordinated with comprehensive management programs for the affected area, they can lead to unsuccessful results [7] .…”

Section: Introductionmentioning

confidence: 99%

Requirements for Germination and in vitro Culture of Scrophularia depauperata BOISS Seedlings: An Endemic Herbaceous of Turkey*

2021

jecet

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Seed germination is the critical stage for species survival. Environmental factors are involved as spatio-temporal indicators of favorable conditions during this process. The current study assessed the effects of light, temperature and growth media on the germination and seedling growth of Scrophularia depauperata BOISS., a norrow endemic herb from western Turkey. The seeds of the species exhibited an obligate light requirement. Highest germination ratio (71.25 %) occurred at 25 °C, under 16/8 photoperiod and in water agar (A), at the end of 14 d. Full strength Murashige Skoog's medium (F) redounded to 28 d seedling growth in the manner of root/shoot elongation ratio and seedling dry/fresh weight. 1mg/L IBA robusted the roots of the in vitro grown plantlets. Acclimatization consisted of two steps: Well rooted and acclimated seedlings in sand:peat:perlite substrate in a misty growth chamber (i), then were transferred and survived with 62 % in common garden soil in the greenhouse (ii). These results are expected to provide infromation which could be used for the establishment of Scrophularia depauperata Boiss. in its natural habitat.

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Positive photoblastic response of seed germination in Eriosyce subgen: Neoporteria (Britton & Rose) Helmut Walter (Cactaceae)

Cited by 5 publications

References 10 publications

Seed mass, germination and seedling traits for some central Argentinian cacti

Seed mass, germination and seedling traits for some central Argentinian cacti

Requerimientos para la Germinación y Cultivo in vitro de Plántulas de Scrophularia depauperata BOISS. : Una Herbácea Endémica de Turquía*

Requirements for Germination and in vitro Culture of Scrophularia depauperata BOISS Seedlings: An Endemic Herbaceous of Turkey*

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