Family variation in nutritional and growth traits in Douglas-fir seedlings
نویسندگان
چکیده
منابع مشابه
Adaptive significance of intermittent shoot growth in Douglas-fir seedlings.
We tested the hypothesis that intermittent (lammas) shoot growth in Douglas-fir (Pseudotsuga menziesii var menziesii (Mirb.) Franco) seedlings from dry regions of southwest Oregon is adaptively significant. Seedlings from open-pollinated families (160 total) from two inland (dry) and two coastal (wet) sources were grown under either well-watered or intermittent drought conditions (temporary dro...
متن کاملRate of Respiration of Douglas-Fir Seedlings
The rate of photorespiration of Douglas-fir seedlings was measured under different light intensities by: (1) extrapolating the curve for CO., uptake in reilation to atmospheric CO, content to zero CO2, content, and (2) measuring CO, evolution of the plants into a CO2-free airstream. Different results, obtained from these techniques, were lelieved to be caused by 'a severe restriction of the pho...
متن کاملGenetic variation in drought hardiness of coastal Douglas-fir seedlings from British Columbia1
1716 Abstract: Genetic variation in drought hardiness traits and their genetic correlations with growth potential and recovery traits were investigated in 39 full-sib families of coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) from southwestern British Columbia. Seedlings of these families were grown in raised nursery beds and subjected to three moisture regimes each i...
متن کاملEvidence for red:far red signaling and photomorphogenic growth response in Douglas-fir (Pseudotsuga menziesii) seedlings.
In a greenhouse experiment, potted coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were grown in miniature "Nelder" (Nelder 1962) plots where growing space varied from 265 to 2555 cm(2) per plant. After thirty weeks, mean plant height, crown biomass and branch number increased significantly (P = 0.0141) with decreasing growing space (increasing plant density). Differences i...
متن کاملMaturation in Douglas-fir: II. Maturation characteristics of genetically matched Douglas-fir seedlings, rooted cuttings and tissue culture plantlets during and after 5 years of field growth.
Seedlings, rooted cuttings from juvenile stock plants, and cotyledon-derived tissue culture plantlets were propagated from several coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) full-sib families so that the rooted cuttings and plantlets were clonally identical. The stock types (seedlings, rooted cuttings and plantlets) were planted in the field in spring 1987. In fall 1991, after f...
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ژورنال
عنوان ژورنال: Tree Physiology
سال: 2007
ISSN: 0829-318X,1758-4469
DOI: 10.1093/treephys/27.6.911