منابع مشابه
How conifers adapt to the cold.
I n convergent evolution, different species independently acquire similar traits. Knowing whether divergent species use the same or different genetic solutions to adapt to similar selection pressures can illuminate innate constraints on underlying molecular networks. Most cases of convergence that are understood at the genetic level are relatively simple, involving one or a few genes. On page 1...
متن کاملCan Hardwoods Be Eradicated
The southern pines constitute an important commercial crop, and with proper management their rapid growth insures a renewable resource for the southern United States. On upland pine sites, hardwood shrubs and trees, herbaceous plants, and woody vines all compete with the pines for sunlight, growing space, moisture, and nutrients. The loss in pine volume production that results from this competi...
متن کاملDemand Cardiomyoplasty : Dynamic Girdling is Superior to Ady - namic
In order to avoid full transformation and early degeneration of the latissimus dorsi (LD), giving better systolic assistance, a new stimulation protocol was developed: fewer impulses per day were delivered, providing the LD wrap with daily periods of rest, based on a heart rate cut-off (Demand activation). We aimed to determine whether Demand dynamic girdling (DemDyn) is superior to passive gir...
متن کاملTranscriptional response to petiole heat girdling in cassava
To examine the interactions of starch and sugar metabolism on photosynthesis in cassava, a heat-girdling treatment was applied to petioles of cassava leaves at the end of the light cycle to inhibit starch remobilization during the night. The inhibition of starch remobilization caused significant starch accumulation at the beginning of the light cycle, inhibited photosynthesis, and affected intr...
متن کاملKey to Utilization of Hardwoods Growing on Southern Pine Sites
For every cubic foot of pine on southern pine sites, there is about 0.8 cubic foot of hardwood. The shaping-lathe headrig, now in the final stages of commercialization, is a key to utilizing these small mixed hardwoods for paYets and industrial lumber. Lathe residues in the form of flakes can be the raw material for a new major industry manufacturing exterior structural flakeboard competitive i...
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ژورنال
عنوان ژورنال: The Forestry Chronicle
سال: 1930
ISSN: 0015-7546,1499-9315
DOI: 10.5558/tfc6114-2