Báo cáo lâm nghiệp: "Seasonal development of female strobilus of stone pine (Pinus pinea L )" ppsx

... variable will be selected to optimally separate mature from juvenile wood. In the second place an individual tree model shall be found to describe pith-to-bark-pro- files at best for all trees, ... the tree level are added to explain the variability of the individual models (model M 3 , M 4 , M 3r ). In the final step a simulation of pith-to-bark profiles for the five stands will be done....

Ngày tải lên: 08/08/2014, 01:22

... separates the female gametophyte into many small cells. In April, the archegonia appear at the nucellar end of the gametophyte, with the egg cell well formed. In early June, ... Esperienze sull’innesto all’aperto del pino domestico (Pinus pinea L. ). Firenze, pp. 20 Owens J.N. & Molder M. (1984) The re- productive cycle of Lodgepole pine....

Ngày tải lên: 09/08/2014, 04:20

... increase of ground fluorescence (F o ), labelled T c , [32] yielded closely cor- related results with nevertheless different absolute values (T c was on average 6.5 °C above T 15 ). As a matter of ... activity of developing leaves of Zea mays is less affected by heat stress than that of developed leaves, Physiol. Plant. 105 (1999) 685–693. [21] Knight C.A., Ackerly D.D., An ecologic...

Ngày tải lên: 08/08/2014, 01:22

... (Rinderle and Lichtenthaler, 1988). The registration of the different chlorophyll fluo- rescence parameters (Lichtenthaler, 1987; Lichtenthaler et al., 1986; Lichtenthaler and ... Chlorophylls and carotenoids, the pigments of photosynthetic bio- membranes. Methods Enzymol. 148, 350-382 Lichtenthaler H.K. & Rinderle U. (1988a) The role of chlorophyll...

Ngày tải lên: 09/08/2014, 04:20

... probable annual average using formula (3). Provi- sionally, the simulated values of indexes SI m deter- mined in local conditions should be used, while progressively these values should be ... objective estimation of a typical value characterising annual germination of a particular seed lot. e following alternatives represent possible solu- tions: – To apply our method proposed .....

Ngày tải lên: 07/08/2014, 10:21

... the Holocene flood loams – Fluvisols. ey are loamy to loamy clay, viscous to very viscous, wet, and well-provided with nutrients. e reaction of the soil is neutral to slightly alkaline. ... increased amount of agricultural land at the point when new villages belonging to the town of Litovel were set up. e floodplain was gradually covered with flood loam layers that were several...

Ngày tải lên: 07/08/2014, 10:21

... transferred to experimental field populations. The architectural analysis of these plants in the future would allow the relationships between plant progeny and growth traits in older plants to be assessed. 4.2. ... the numbers of dead nodes of each of these shoots). 2.3. Data analyses Plants with 1-GU second shoot (297 plants, all progenies pooled) will be referred to as group I plants...

Ngày tải lên: 07/08/2014, 16:21

... small (between 10 and 15%) and of probably limited physiological significance. The most interesting effect of the leaf miner on seedlings’ physiology was observed at the level of plant hydraulics (Fig. ... Seasonal changes of leaf water potential at the turgor loss point (Ψ tlp ) and leaf osmotic potential at full turgor (π 0 ) as estimated from pressure-volume curves for leaves of...

Ngày tải lên: 08/08/2014, 00:21

... A.M. González-Rodríguez et al. [20] Larcher W., La posizione delle piante sempreverdi mediterranee nella evoluzione della resistenza al freddo. Atti dell’Istituto Veneto di Scienze, Lettere ed ... Fernández M., Royo A., Gil L. , Pardos J.A., Effects of temperatura on growth and stress hardening development of phytotron-grown seedlings of Aleppo pine (Pinus halepensis Mill.), An...

Ngày tải lên: 08/08/2014, 00:22

... Copper acquisition by plants is only slightly related to soil pH [48], hence Cu contents of seedlings in all three substrates varied only slightly. Values of elemental concentrations in primary needles (data not ... horizons are difficult to dissolve and hence result in low plant available P in alkaline soil [48]. Hence, high total soils stocks of P were of minor relevance for P acquisi...

Ngày tải lên: 08/08/2014, 00:22