DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 10-11/1974 str. 30 <-- 30 --> PDF |
high in the course of the last 100 years, which is indicative of a spectacular metamorphosis of nature, a state to be metaphorically compared to the intensity of an explosion within the dimensions of geological time. 3) The efficient protection of the primary genetic resources in the broadest sense (»preservation of the gene pool«). Striving after an unrestricted exploitation of the natural stands of today´s trees and shrubs ought to give up space to an unlimited effort in securing a sustained cyclic abundance of natural variability. 4) A directed evolution of plants by man, which exceeds the forces of individual nations and calls for a coordinated effort not only within the scope of this country but likewise within international dimensions. Through space occupancy and the expansion of the cultural framework, through conveying ever larger amounts of species and cultivated plants, from one area to another, man has essentially cemented the unity of the whole of the biosphere. The forms of his intensive utilization of nature should of necessity be subjected to a control of international dimensions. 5) The development of scientific knonwledge, which leads to an ever greater role of plant improvement in the domain of the life sphere. The whole of humanity is included in the processes of transforming the biosphere into the noosphere, and it is necessary to examine them carefully and from all aspects. This huge task in the re-forming nature on Earth is being outlined by man already today, in which one should not underestimate the numerous difficulties in the exercising the control over the life of our planet. The whole complex of sciences ought to be included in the solution of this priority task, but in this complex of sciences one of the central places is occupied by the teaching of plant improvement, intensified by the contemporary investigations of population and evolution genetics and the plant improvement methods. 6) The work in the sphere of plant improvement which has made it possible to carry out large and far-reaching changes in nature in the course of so many centuries. These changes have been conducive to the creation of fully new cultivated plants and life communities, which had not existed in free nature, and which represent the most expressive form of man´s exploitation of living nature. |