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Sunflower cultivation has been used as a raw material for the production of biofuels for some years. Currently, the crop has expanded in different countries as it has characteristics of withstanding extreme climatic conditions compared to other agricultural crops. However, sunflower grains, due to their high oil content, degrade more quickly in the post-harvest stages (Hussain, 2006). Thus, the drying is an important step in a program of production of sunflower grains. With the reduction in the water content of the grains is can store them for a longer time, increasing the marketing and product quality (Palzer

The gibberellins (GA) present an essential role in many aspects of plant development, seed germination, internode elongation, flower and fruit development. Thus, this work aimed to evaluate the growth attributes and the physiological quality of bean seeds from plants submitted to the application of gibberellic acid, revealing great importance in some characters of agronomic interest. Seeds of genotypes (Phaseulus vulgaris) Mouro and BRS Embaixador and four concentrations of gibberellic acid (zero, 50, 100 and 200 mg L -1 ) were used. Seed germination, first count, germination speed, primary root and shoot length, dry matter of seedlings, shoot height, stem diameter, first pod insertion, pod number and seeds per pod were evaluated. Giberelic acid promoted an increase in plant height and a reduction in stem diameter. Seeds produced under doses of GA 3 did not influence seed germination and dry matter of the seedlings at higher doses, being dependent on the cultivar. In this way, the application of increasing doses of GA 3 in bean plants increases the height of insertion of the first pod, while the physiological quality of the seeds produced is affected by the acid doses.

The aim of this work was to evaluate the physiological performance and some attributes of wheat seeds originated from plants submitted to soil flooding at different stages of development. The treatments consisted of periods of soil flooding, absence of flooding, two floods and three floods of the soil. Each flood lasted for three days. For the evaluation of the physiological quality, the seeds were submitted to the tests of germination and first germination count, germination speed index, shoot and primary root length, shoot and primary root dry matter mass, harvest index, thousand seed mass, electrical conductivity and isoenzymatic analysis. The increase of the soil flooding period did not affect germination, while the germination speed andindex, the harvest index and the thousand seed mass were lower in plants under the higher periods of soil flooding. The expression and intensity of bands of acid phosphatase and peroxidase isoenzymes were differently altered by periods of flooding. Thus, soil flooding negatively influences the physiological performance, the thousand seed mass and the harvest index when the plants are submitted to flooding of the soil.