Puya raimondii Harms (Bromeliaceae) is a monocarpic plant, that can produce about 6 to 12 million seeds, nevertheless is very rare to find seedlings in their natural habitat, indicating difficulties for its establishment. In this work, the conditions for establishment of P. raimondii under laboratory conditions were determined carrying out experiments to determine the better substrate. It was compared the survival and vigour of P. raimondii seedling that were transplanted in peat, moss, peat-soil and moss-soil substrates. The peat substrate showed high survival and was better for establishment of seedlings because it maintains steady and suitable humidity and pH conditions, this allowed that seedlings presents a good vigour. Substrates with very little (case peat-earth) or too much (case moss) humidity retention had a negative effect over vigour and development.

Puya raimondii Harms is an endemic species of the highlands of Peru and Bolivia between 3200 to 4800 m of altitude with noticeable great size and beauty. It is considered threatened species; therefore it is urgent to know the factors that affect its viability and germination of their seeds; aspects focused work presently. The seeds were collected in 1999 and 2000 in Huashta Cruz (Pueblo Libre, Ancash, Peru) and they classified as lots (considering their origin and appearance). They were determined their moisture content and the viability (quality). By means of germination tests, it was evaluated in 5 lots the effect of the light and temperature. The seeds presented different viability which depended on the conditions they were exposed in situ and that it is correlated inversely with its content of humidity, affecting its appearance inclusive. The seeds exposed to the light presented high...

Puya raimondii Harms (Bromeliaceae) es una planta monocárpica que puede producir entre 6 y 12 millones de semillas, sin embargo es muy raro encontrar plántulas en su hábitat natural, lo que significaría la existencia de factores limitantes en el proceso de establecimiento. En el presente trabajo muestra los resultados de experimentos para determinar el sustrato más adecuado para el establecimiento de P. raimondii bajo condiciones de laboratorio. Se comparó la sobrevivencia y vigor de plántulas de P. raimondii en los substratos de turba, musgo, turba-tierra y musgo-tierra. El sustrato turba presentó la mayor supervivencia, mostrando que es el más adecuado para el establecimiento de las plántulas, porque mantiene una humedad adecuada y pH estable lo que permitiría que las plántulas presenten un mayor vigor; los sustratos con muy poca (caso turba–tierra) o demasiada (caso musg...

Puya raimondii Harms is an endemic species of the highlands of Peru and Bolivia between 3200 to 4800 m of altitude with noticeable great size and beauty. It is considered threatened species; therefore it is urgent to know the factors that affect its viability and germination of their seeds; aspects focused work presently. The seeds were collected in 1999 and 2000 in Huashta Cruz (Pueblo Libre, Ancash, Peru) and they classified as lots (considering their origin and appearance). They were determined their moisture content and the viability (quality). By means of germination tests, it was evaluated in 5 lots the effect of the light and temperature. The seeds presented different viability which depended on the conditions they were exposed in situ and that it is correlated inversely with its content of humidity, affecting its appearance inclusive. The seeds exposed to the light presented high...

Puya raimondii Harms is an endemic especie of the highlands of Peru and Bolivia, whose population and area of distribution are being reduced. Aiming at contributing to the knowledge of the mechanisms of propagation of this species, a study of the effects of the illumination and stratification on the germination of the seed was carried out. The seed was collected in the rodal of Puya raimondii in Huashta Cruz (Pueblo Libre, Ancash) in December 1999 and were stored under laboratory conditions in Lima until the tests. The seeds were desinfected with sodium hipochloride 2,6% and for the germination test seeds were placed in petri dishes with distilled and sterilized water during 2000. The preliminary results show that the seed of Puya raimondii has a high percentage and velocity of germination when exposed to light. A similar effect was achieved by stratifying them for two months at 11 °C o...

Puya raimondii Harms is an endemic especie of the highlands of Peru and Bolivia, whose population and area of distribution are being reduced. Aiming at contributing to the knowledge of the mechanisms of propagation of this species, a study of the effects of the illumination and stratification on the germination of the seed was carried out. The seed was collected in the rodal of Puya raimondii in Huashta Cruz (Pueblo Libre, Ancash) in December 1999 and were stored under laboratory conditions in Lima until the tests. The seeds were desinfected with sodium hipochloride 2,6% and for the germination test seeds were placed in petri dishes with distilled and sterilized water during 2000. The preliminary results show that the seed of Puya raimondii has a high percentage and velocity of germination when exposed to light. A similar effect was achieved by stratifying them for two months at 11 °C o...