Germination in Prosopis ferox seeds: effects of mechanical, chemical and biological scarificators

Baes, Pablo Ortega; Viana, Marta Leonor de; Sühring, Silvia

doi:10.1006/jare.2001.0859

Cited by 55 publications

(30 citation statements)

References 9 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Apart from seed liberation, the removal of pods by frugivores may provide an escape to the seed (Howe and Smallwood 1982) from insect seed pre dators near the parent tree (Jadeja unpubl.). A study on a related species, Prosopis ferox , found minimal pod removal by frugivores; none of the seeds were liberated from the indehiscent pods and 99% of the seeds within the pods remaining under parent plants were depredated by bruchid insects over a period of six years (Baes et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Antelope mating strategies facilitate invasion of grasslands by a woody weed

Jadeja

Prasad

Quader

et al. 2013

Oikos

View full text Add to dashboard Cite

Intra and interspecifi c variation in frugivore behaviour can have important consequences for seed dispersal outcomes. However, most information comes from among-species comparisons, and within-species variation is relatively poorly understood. We examined how large intraspecifi c diff erences in the behaviour of a native disperser, blackbuck antelope Antilope cervicapra , infl uence dispersal of a woody invasive, Prosopis julifl ora , in a grassland ecosystem. Blackbuck disperse P. julifl ora seeds through their dung. In lekking blackbuck populations, males defend clustered or dispersed mating territories. Territorial male movement is restricted, and within their territories males defecate on dung-piles. In contrast, mixed-sex herds range over large areas and do not create dung-piles. We expected territorial males to shape seed dispersal patterns, and seed deposition and seedling recruitment to be spatially localized. Territorial males had a disproportionately large infl uence on seed dispersal. Adult males removed twice as much fruit as females, and seed arrival was disproportionately high on territories. Also, because lek-territories are clustered, seed arrival was spatially highly concentrated. Seedling recruitment was also substantially higher on territories compared with random sites, indicating that the local concentration of seeds created by territorial males continued into high local recruitment of seedlings. Territorial male behaviour may, thus, result in a distinct spatial pattern of invasion of grasslands by the woody P. julifl ora . An ex situ experiment showed no benefi cial eff ect of dung and a negative eff ect of light on seed germination. We conclude that large intraspecifi c behavioural diff erences within frugivore populations can result in signifi cant variation in their eff ectiveness as seed dispersers. Mating strategies in a disperser could shape seed dispersal, seedling recruitment and potentially plant distribution patterns. Th ese mating strategies may aid in the spread of invasives, such as P. julifl ora , which could, in turn, negatively infl uence the behaviour and ecology of native dispersers.

show abstract

Section: Discussionmentioning

confidence: 99%

Antelope mating strategies facilitate invasion of grasslands by a woody weed

Jadeja

Prasad

Quader

et al. 2013

Oikos

View full text Add to dashboard Cite

show abstract

“…Ortega Baes et al (2002) obtuvieron en semillas de P. ferox porcentajes de germinación superiores al 90% con tratamientos pregerminativos (escarificación química y mecánica), mientras que en el tratamiento control, ninguna semilla germinó. En este trabajo, si bien la escarificación fue necesaria, las semillas frescas (sin tratamientos pre-germinativos) presentaron un elevado porcentaje de germinación (63%) que disminuyó con la reducción del CH.…”

Section: Discussionunclassified

Tolerancia a la desecación de semillas de <i>Prosopis ferox</i> y <i>Pterogyne nitens</i> (Fabaceae)

Morandini

Giamminola

Viana

2013

RBT

View full text Add to dashboard Cite

Desiccation tolerance in seeds of Prosopis ferox and Pterogyne nitens (Fabaceae).The high number of endemisms and species diversity together with the accelerated biodiversity loss by deforestation, especially in North Western Argentina, points out the need to work on species conservation combining ex situ and in situ strategies. The aim of this work was to study the desiccation tolerance in seeds of P. ferox and P. nitens for long term ex situ conservation at the Germplasm Bank of Native Species (BGEN) of the National University of Salta (Argentina). The fruits were collected from ten individuals in P. ferox at the National Park Los Cardones and from two sites (Orán and Rivadavia) for P. nitens. Desiccation tolerance was assessed following previous established methodologies. The moisture content (MC) of the seeds was determined by keeping them in oven at 103°C and weighting the samples at different intervals till constant weight. Germination essays were carried out with two treatments (control and scarification), with different seed MC (fresh, 10-12%, 3-5%) and in desiccated seeds (3-5% MC) stored six months at -20ºC. The MC in P. ferox seeds was 14.2% and 10% in P. nitens, for both populations studied. Percentage germination in P. ferox was higher in the scarification treatments (<82%). The difference between treatments increased with the reduction in MC and the storage for six months at -20°C. Fresh seeds of P. nitens do not need scarification treatment, but it is required with the reduction in MC and storage. Mean germination percentage of desiccated seeds stored six months at -20°C was similar in both populations and greater than 82%.We concluded that both species are probably orthodox because seeds tolerated desiccation to 3-5% and storage for six months at -20°C. Rev. Biol. Trop. 61 (1): 335-342. Epub 2013 March 01.

show abstract

“…a) Control b) 98% Concentrated H 2 SO 4 treatment for 1 hour and Hot water treatment 100ºC for 20 min (Siva et al 2014). c) 1 N NaOH treatment for 1 hour and Scarification by sand paper number 100 (Baes et al 2002). d) Cold water treatment Overnight incubation at 4ºC (Fariman et al 2011).…”

Section: Methodology For Seed Dormancymentioning

confidence: 99%

Seed dormancy testing and germination frequency determination of Psoralea corylifolia L., an endangered medicinal plant

Arya¹,

Gothalwal²

2017

Trop. Plant Res.

View full text Add to dashboard Cite

Seed dormancy is one of important factor which prevent the cultivation of medicinally important plant Psoralea corylifolia. Mechanical dormancy is present in the seed due to hard seed coat. P. corylifolia is a slow growing species due to low germination percentage (5-7%). Long gestation period and delicate field handling discourages the commercial cultivation of the plant so different treatments were used to break dormancy in seeds. Out of five different methods used 98% concentrated H 2 SO 4 for about one hour was found to be best method for seed dormancy breakage. Statistical analysis of data was performed by one way ANOVA using Sigma State Software version 4.

show abstract

Germination in Prosopis ferox seeds: effects of mechanical, chemical and biological scarificators

Cited by 55 publications

References 9 publications

Antelope mating strategies facilitate invasion of grasslands by a woody weed

Antelope mating strategies facilitate invasion of grasslands by a woody weed

Tolerancia a la desecación de semillas de <i>Prosopis ferox</i> y <i>Pterogyne nitens</i> (Fabaceae)

Seed dormancy testing and germination frequency determination of Psoralea corylifolia L., an endangered medicinal plant

Contact Info

Product

Resources

About