Abstract
The purpose of the present work was to highlight the effect of the climatic conditions of the year 2007, which is characterized through an extreme drought, on a set of 10 hybrids of sunflower found in the tests at SCDA ?imnic. The knowledge of this aspect has great importance in the zoning of the sunflower hybrids. It was detected that in such conditions the seeds of sunflower can remain in the latent state (an enough long period) until they find the optimal conditions of germination. Also, the complex metabolic and physiological whole of the plant modified, the phonological phase of development became shorter and the physiological maturity was rushed.
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