Abstract
Abstract: Several factors affect the electrical conductivity test efficiency, with emphasis given to the initial water content and the temperature during imbibition. This study aimed to evaluate the effect of the initial water content of pea seeds and the temperature on the electrical conductivity test efficiency. Six lots of ‘Mikado’ pea were used, which were previously tested for initial characterization. In the first trial, based on the initial value of the samples, the seed moisture content was adjusted to 9, 11, 13 and 15% and then the seeds were submitted to the electrical conductivity test. In the second trial, the water for seed imbibition was kept for 24 hours at 10, 15, 20, 25 and 30 ºC, and after that time the seeds were added and soaked for other 24 hours at the temperatures already mentioned. It was observed that initial seed moisture content and water temperature during imbibition influenced the results of the electrical conductivity test. This test should be carried out with distilled water, previously maintained for 24 hours at 25 °C for temperature stabilization. Then, the seeds with seed moisture content between 11 and 15% should be put to soak at 25 °C, and maintained at this temperature for 24 hours.
Highlights
The seed is one of the most important agricultural inputs
The aim of this study was to elucidate the effect of the initial pea seed moisture content and the imbibition temperature on the results of the electrical conductivity test, and its capacity to differentiate seed lots in terms of vigor
The initial pea seed moisture content and the imbibition temperature affect the results of the electrical conductivity test
Summary
It is responsible for bringing to the rural areas the advances of genetics and plant breeding. It guarantees the maintenance of plant population in these areas, that below the minimum necessary may cause irreparable damages (Marcos-Filho, 2015). The use of high quality seeds for the implantation of an agricultural area is a fundamental requirement for the success of a crop. The physiological quality of the seeds is usually evaluated by germination and vigor tests, which, in addition to inform the maximum potential of a lot, may generate data about its performance under stress conditions. The electrical conductivity test stands out due to its simplicity, fast results and low cost
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