HEARTWOOD FORMATION IN PINUS RADIATA (D.DON.)
نویسندگان
چکیده
منابع مشابه
Changes in Fats and Resins of Pinus Radiata Associated with Heartwood Formation
In an analysis of Australian grown P. radiata marked changes were found in the relative proportions and compositions of the resin acids. fattY acids, and fatty acid esters associated with heartwood formation. While the proportion of resin acids increased substantially in the heartwood, there was little change in resin acid composition from outer sapwood to inner heartwood. Extracts from wood of...
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Observations and records collected over a six-year period show that, in a seed orchard of Pinus radiata at Kaingaroa Forest, approximately half of all female strobili initiated abort during the first year after pollination. For an average clone this process of conelet drop starts at the time of receptivity, reaches a peak some four to six weeks later, and then decreases in intensity. This time ...
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The yields of char, tar, and non-condensible gases from the pyrolysis of Pinus radiata D. Don bark were measured. Pyrolysis of bark, on a small preparative scale using an airacetylene flame, gave 48% char with ash content 3.5% (mainly aluminium, calcium, potassium, and silica), and recovered tar in 7% yield (on oven-dried bark equivalent). The major components of the pyrolysis tar were catechol...
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The pitch canker fungus Fusarium circinatum was first associated with mortality of P. radiata in California during the 1980s. Since then it has been dispersed to several countries of the Northern hemisphere together with South Africa and Chile in the southern hemisphere. In Chile the disease caused mortality of seedlings in P. radiata at nursery, and in South Africa the pathogen has already com...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1954
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.1954.tb05258.x