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Copyright of Agricultural Research in the Tropics / Pesquisa Agropecuária Tropical is the property of Pesquisa Agropecuaria Tropical and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Agricultural Research in the Tropics / Pesquisa Agropecuária Tropical is the property of Pesquisa Agropecuaria Tropical and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Sementes is the property of Associacao Brasileira de Tecnologia de Sementes and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Sementes is the property of Associacao Brasileira de Tecnologia de Sementes and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of this study was to determine the conditions of the potassium leaching test for evaluating rice seed vigor. Five seed lots of the IRGA 424 variety and five seed lots of the Puita Inta CL variety were tested, and results compared with those from germination tests, first germination count, cold test (without soil), electrical conductivity and seedling germination in the field. The amount of potassium leachate was determined using a flame photometer, after 30, 60, 90, 120, 150 and 180 minutes of immersing 50 seeds in distilled and deionised water at volumes of 20 and 50 mL at 25 °C. The combination of 50 pure seeds submerged in 50 mL of distilled and deionized water at 25 °C for 60 minutes was the most efficient procedure for classifying the physiological quality of rice seed lots. [ABSTRACT FROM AUTHOR]

The objective of the present study was to evaluate the efficiency of X-Rays in identifying fissures in artificially dried rice seeds and the relationship between damage and seed performance in the germination test. Irrigated rice seeds of the IRGA 417 and IRGA 420 cultivars were harvested with 23.3 and 24.5% water content respectively and submitted to stationary drying treatments at 32, 38, 44 and 50 °C. X-Rays were taken of subsamples of 100 seeds for each treatment, using an MX-20 X-ray equipment. The X-Rayed seeds were classified from 1 to 3, where 1 corresponded to seeds without fissures, 2 to seeds with non-severe fissures and 3 to seeds with severe fissures. The same X-Rayed seeds were planted and on the seventh day the seedlings (normal or abnormal) and dead seeds were photographed and evaluated to verify any relationship between the fissures and physiological potential. Higher drying temperature increased the percentage of fissures in the two cultivars, which can adversely affect their germination. Seeds with fissures can be identified using X-Rays. [ABSTRACT FROM AUTHOR]

Copyright of Revista Brasileira de Sementes is the property of Associacao Brasileira de Tecnologia de Sementes and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Sementes is the property of Associacao Brasileira de Tecnologia de Sementes and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Sementes is the property of Associacao Brasileira de Tecnologia de Sementes and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Scientiarum: Agronomy is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This research had the objective of isolate, identifying and select isolates (s) of Fusarium spp. in cucumber seeds and checking the influence of this (these) isolate(s) on the physiological quality. Three batches were used and treatments utilized consisted in: absolute witness; PDA + mannitol - 0.8Mpa; PDA pure; PDA + mannitol - 0.8Mpa + fungi; and PDA + fungi. The physiological quality was assessed by tests carried out in laboratory and greenhouse. Five isolates off Fusarium verticillioides were isolated and it was not possible to affirm its transmission through seed. The hydric restriction technique was efficient to provide the infection of cucumber seeds, since this fungus affected the physiological quality of cucumber seeds of this cultivar. [ABSTRACT FROM AUTHOR]