Abstract
Corn seed producers have shown significant concern about variations in the seed storage potential of different hybrids, which may not perform as desired. The objective of this research was to evaluate the effect of storage conditions on the physiological potential of seeds of different corn genotypes. Three experimental corn hybrids, each represented by three seed lots produced by Syngenta Seeds, were evaluated. Seeds were stored for fifteen months under three environments: cold and dry chamber (10 ºC and 30% relative humidity), laboratory environment, and controlled sub-optimal environment (20 ºC and 70% relative humidity). Seed performance was evaluated every three months by germination, accelerated aging and cold tests. Activity of the catalase, alcohol dehydrogenase and α-amilase enzymatic systems was also determined using electrophoresis. The storability of corn seeds from different genotypes can be consistently evaluated by associating germination and vigor test results with isoenzymatic activity. Storage under controlled sub-optimal temperature and relative humidity is an efficient procedure to provoke differences in intensity and speed of deterioration in corn seeds of different genotypes.
Highlights
Different cultivars of the same species may differ as to the vigor and longevity
The storability of corn seeds from different genotypes can be consistently evaluated by associating germination and vigor test results with isoenzymatic activity
The conditions of temperature and relative humidity were different in the three environments, allowing the occurrence of variations in the deterioration rate of seeds of the three hybrids
Summary
Different cultivars of the same species may differ as to the vigor and longevity. Proper storage allows for the conservation of seed viability for prolonged periods. Andrade and Borba (1993) noted that several cultivars of the same species may differ as to the vigor and storage potential. Several authors have emphasized that the main factors responsible for the conservation of seeds during storage are the temperature and the moisture content of the seeds. Harrington (1972), stated that the maintenance of low temperature reduces the activity of enzymes involved in the breathing process and, the speed of decline in viability of the orthodox seeds during storage.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
