Coping with spring frost-effects on polyamine metabolism of Scots pine seedlings
نویسندگان
چکیده
منابع مشابه
Effects of timing of soil frost thawing on Scots pine.
Effects of the timing of soil thawing in the spring on Scots pine (Pinus sylvestris L.) were studied under controlled laboratory conditions. Sixteen 6-year-old saplings were lifted from the field, replanted in containers and placed in four treatments in controlled environment (CE) chambers with four replicate saplings per chamber. The saplings were held in the CE chambers during one simulated w...
متن کاملEffects of foliar potassium concentration on morphology, ultrastructure and polyamine concentrations of Scots pine needles.
We examined the effects of three foliar potassium concentrations (high, intermediate and low) on the morphology, ultrastructure and polyamine concentrations of current-year and 1- and 2-year-old needles of 30-year-old Scots pine (Pinus sylvestris L.) trees. Foliar K concentration had only a slight effect on needle morphology. The sclerenchyma cell walls were thinner, the xylem area was larger, ...
متن کاملElongation of Scots Pine Seedlings under Blue Light Depletion
The effect of blue light (400–500 nm) removal on the elongation of Scots pine (Pinus sylvetris L.) seedlings was investigated in a field experiment in Northern Finland during two growing seasons. The seedlings were grown in plexiglass chambers and ambient control plots. The blue wavelengths were removed from the light spectrum by using chambers made of orange plexiglass. The results of nearly d...
متن کاملSoil temperature and intermittent frost modulate the rate of recovery of photosynthesis in Scots pine under simulated spring conditions.
An earlier onset of photosynthesis in spring for boreal forest trees is predicted as the climate warms, yet the importance of soil vs air temperatures for spring recovery remains to be determined. Effects of various soil- and air-temperature conditions on spring recovery of photosynthesis in Scots pine (Pinus sylvestris) seedlings were assessed under controlled environmental conditions. Using w...
متن کاملGrowth responses of scots pine seedlings grown in peat-based media amended with natural zeolite.
Zeolite has many good features that makes it very attractive for nursery use as a growing media over others. This study was designed to investigate influence of different growing media and their mixtures (with zeolite and without zeolite) on morphological characters of scots pine seedlings. Twenty-one treatments of varying amounts of peat, fine pumice, coarse pumice, river sand, perlite and riv...
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ژورنال
عنوان ژورنال: iForest - Biogeosciences and Forestry
سال: 2017
ISSN: 1971-7458
DOI: 10.3832/ifor2003-009