[PDF] Top 20 Seed stage and conservation of plant species

... En otras especies, especialmente las de semillas grandes, una disminución del contenido de humedad debajo de cierto límite relativamente alto causa la muerte de las semillas y [r] ... See full document

... 2007) and probably improve water infi ltra- tion and retention in the soil (Casenave and Valentin, 1989; Montaña et ...Rosentreter and Belnap, 2001; Reyes- Gómez et ...establishment and ... See full document

... The most plausible model representing the causal rela- tionships among variables in our data set did not include any effect of seed size on seedling emergence time; neither light avail[r] ... See full document

... use of rooted cuttings of B. quinatum in their plant improve­ ment program o Since one of the problems associated with the reproduction of this species is obtaining a sufficient ... See full document

... start of the seed rain of most woody species, ten plots with dense bromeliad understory were selected within a 70 ha pad- dock, taking into account that they were separated at least by 20 ... See full document

... number of individual plant and population counts have occurred around the Monterey ...individual plant counts indicate that from 0.4 to 22% of the vegetative individuals flower in a ... See full document

... São Paulo (MUZUSP) and Museu Nacional do Rio de Janeiro (MNRJ). The birds were released after sampled, except for the speci- mens collected for confirming identifica- tion. The frugivorous birds studied here were: ... See full document

... banks, seed orchards and operational ...sources of variation of functional traits for direct use in production through propagation and breeding ...the species and ... See full document

... international conservation priority area because of the high concentration of endemism and biodiversity threatened with extinction (Bosser et ...majority of conservation efforts ... See full document

... regeneration and the initial development of forest species in certain areas will likely occur ...germination and early growth of Pinus pinaster and later found water stress to be ... See full document

... part of global plant diversity, studies on their conservation priorities are still needed (Go´mez-P 1985; Given ...forests and related types of forest (Conant et ...Mickel and ... See full document

... poor and some groups are well-represented, others not, especially not ...scarcity of insects forces birds to explore alternative food, such as nectar and ...pollinate and disperse seed ... See full document

... the seed bank, seedling bank, and tree canopy in beech forest have been little ...richness and seed bank richness in tem- perate broad-leaved ...between seed bank and tree canopy ... See full document

... Depletion of genetic resources may result from activities such as hunting, gathering of firewood, farming and ...identification of activities that are likely to have significant processes ... See full document

... variation of environmental conditions could indicate important ecological factors for ...water and suitable temperature to mature which occur in rainy seasons or wetter sites (Herrera & Pellmyr ... See full document

... population of cultivated cardoon (Cynara cardunculus ...frame of the Spanish funded projects PROBIOCOM (INIA) and ...one of the partners of PROBIOCOM – the Agro-Energy Group of ... See full document

... to seed dispersal, namely the removal of seeds from source shrubs to an unknown destination (Skarpaas et ...components of disperser effective- ness, such as events occurring during dispersal or gut ... See full document

... tree of 10 m height, with rounded ...pinnae and each pinna has 7 - 16 pairs of ...curved and yellow to reddish-brown. It grows extensively in arid and dry regions including western ... See full document

... Callus Formation and Subsequent Plant Regeneration from seed Tissue of an Agave species ( Agavaceae ). Los agaves en México. Universidad Autónoma de Chapingo, México. Propa[r] ... See full document

... practice of agroforestry by the indigenes though, enhances food production and maintain the fertility of the soil, is indirectly preserving some plant ...need of plant ...way ... See full document