Abstract
ABSTRACT The adoption of quick and reliable laboratory techniques and equipment to choose the best seed lots for marketing will influence the production of soybeans with superior physiological quality, among other areas in the sector. Therefore, the objective of this study was to evaluate the CO2 concentrations produced by water-soaked soybean seeds and to verify the effectiveness of new equipment to help choose lots with different vigor levels. To evaluate the physical and physiological quality of the seeds, eight soybean lots were evaluated with the following tests: water content, weight of thousand seeds, first germination count, germination, electrical conductivity, emergence, and respiration evaluated by the Pettenkoffer apparatus and with equipment designed to measure CO2 in seeds. The results were subjected to analysis of variance with means compared by Tukey’s test at p ≤ 0.05. Conventional methods showed significant differences in vigor and viability in soybean seeds. The equipment designed was efficient in detecting CO2 produced by seeds soaked in water for 8 hours. The CO2 readings with the equipment presented satisfactory results to predict the vigor in soybean seeds through respiration.
Highlights
Seed vigor is the set of properties that determines the physiological potential for rapid and uniform emergence and development of normal seedlings under a wide range of environmental conditions (Rocha et al, 2017)
The results for the water content variable show differences between the tested lots, classifying lots 3, 4, 5, and 7, with means statistically similar and superior to the others (Table 1)
According to Tunes et al (2012), when the water content of the seeds is relatively low, greater reliability is allowed for the results obtained in the physiological quality tests, because, within certain limits, the more humid seeds are, the more susceptible they are to deterioration
Summary
Seed vigor is the set of properties that determines the physiological potential for rapid and uniform emergence and development of normal seedlings under a wide range of environmental conditions (Rocha et al, 2017). The ambient temperature, water content, and chemical composition of the seeds influence the preservation of physiological quality by altering biological activities and accelerating the respiratory one (Tillmann et al, 2019). During this process, the stored glucose is used as an energy source, consuming oxygen, and producing CO2 with subsequent release of water and energy (Silva et al, 2017). Researchers have opted for reliable and economically viable checks, which help in deciding the fate of certain seed lots through vigor tests to identify less advanced stages of deterioration, according to Wendt et al (2017)
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 callMore From: Revista Brasileira de Engenharia Agrícola e Ambiental
Disclaimer: 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.
