EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Germination and phenology of 1-year-old maritime pine seedlings under continuous light


, : Germination and phenology of 1-year-old maritime pine seedlings under continuous light. Trees (Berlin) 7(1): 48-58

Nine half-sib families of maritime pine (Pinus pinaster Ait.), of known vigor and growth pattern (monocyclic vs polycyclic), were grown under continuous light in two temperature regimes. Results of germination and development to the beginning of the second flush are reported here. Families significantly differed for mean date of germination and date of first budset. After 18 weeks of continuous light most of the seedlings had set a bud. High temperature (25 degree C vs 25 degree C/20 degree C) hastened first budset by approximately 5 days. However, 3 families had not reached 75% budset at the end of the experiment. Variation in date of first budset was almost exclusively explained by variation in the period between initiation of primary needles and budset. Further 2, developmental stages could be distinguished within this period, the boundary between them being the emergence of the first secondary needles. Variation in height at first budset was mostly due to variation in growth rate, not in duration. Possible causes of early budset and implication for selection are discussed.


Accession: 031588422

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Lascoux, D.M.; Kremer, A.; Dormling, I., 1993: Growth and phenology of 1-year-old maritime pine (Pinus pinaster) seedlings under continuous light: implications for early selection. Experiments were conducted in the Stockholm Phytotron to test continuous light as a method to hasten the development of seedlings. Two sets of maritime pine (Pinus pinaster Ait.) families were grown under growth-accelerating conditions in a contro...

Lascoux, D.M.; Notivol Paino, E.; Sierra D.G.ado, R.; Kremer, A.; Dormling, I., 1993: Maturation of maritime pine (Pinus pinaster Ait.) seedlings after exposure to a period of continuous light. Nine half-sib families of maritime pine (Pinus pinaster Ait.) of known adult performance were grown in continuous light at either 25 degrees C or 25/20 degrees C for 18 weeks. They were then exposed to a dormancy induction period followed by a dor...

Giannini, R.S.arascia-Mugnozza, G.B.llarosa, R., 1983: Influence of year of cone collection on seeds and seedlings traits in stone pine and maritime pine. Italia forestale e montana 38(4): 173-183

Giannini, R.; Mugnozza, G.S.; Bellarosa, R., 1983: Effect of year of seed ripening on some characteristics of seeds and seedlings of stone pine and maritime pine. Stone pine [Pinus pinea] seedlots collected in 1977 and 1978 from 23 trees in Liguria and maritime pine seedtots collected from trees in 4 sites in Tuscany in 1976, 1977 and 1978 were compared. For maritime pine, the only significant difference be...

Loustau, D.B.n-Brahim, M.G.udillere, J.; Dreyer, E., 1999: Photosynthetic responses to phosphorus nutrition in two-year-old maritime pine seedlings. We analyzed processes limiting photosynthesis in two-year-old, container-grown Pinus pinaster Ait. seedlings subjected to phosphorus (P) deficiency. After withholding P for 3 months, seedlings were supplied P at four relative addition rates (0, 0....

Loustau, D.; Brahim, M.Ben.; Gaudillère, J-Pierre.; Dreyer, E., 2003: Photosynthetic responses to phosphorus nutrition in two-year-old maritime pine seedlings. We analyzed processes limiting photosynthesis in two-year-old, container-grown Pinus pinaster Ait. seedlings subjected to phosphorus (P) deficiency. After withholding P for 3 months, seedlings were supplied P at four relative addition rates (0, 0....

Cheaib, A.; Mollier, A.; Thunot, S.; Lambrot, C.; Pellerin, S.; Loustau, D., 2005: Interactive effects of phosphorus and light availability on early growth of maritime pine seedlings. We examined the response of early growth of maritime pine (Pinus pinaster) seedlings to combined levels of light and phosphorus. Seedlings were grown under three levels of phosphorous availability, i.e., two relative addition rates (RAR=2 and 4 g...

Loustau, D.; Berbigier, P.; Roumagnac, P.; Arruda-Pacheco, C.; David, J.S.; Ferreira, M.I.; Pereira, J.S.; Tavares, R., 1996: Transpiration of a 64-year-old maritime pine stand in Portugal: 1. Seasonal course of water flux through maritime pine. The transpiration, sap flow, stomatal conductance and water relations of Pinus pinaster were determined during spring and summer in a 64-year-old stand in Ribatejo (Portugal). The transpiration of the pine canopy was determined from sap flow or ed...

Nguyen Queyrens, A.; Bouchet Lannat, F., 2003: Osmotic adjustment in three-year-old seedlings of five provenances of maritime pine (Pinus pinaster) in response to drought. Three-year-old seedlings of five provenances of Pinus pinaster Ait. that differed in climatic conditions at their geographical origin were subjected to decreasing soil water availability. The degree of needle osmotic adjustment (OA) was estimated...

Nguyen-Queyrens, A.; Bouchet-Lannat, F., 2003: Osmotic adjustment in three-year-old seedlings of five provenances of maritime pine (Pinus pinaster) in response to drought. Three-year-old seedlings of five provenances of Pinus pinaster Ait. that differed in climatic conditions at their geographical origin were subjected to decreasing soil water availability. The degree of needle osmotic adjustment (OA) was estimated...