Abstract
We demonstrate that optical coherence tomography (OCT) is a plausible optical tool for in vivo detection of plant seeds and its morphological changes during growth. To investigate the direct impact of salt stress on seed germination, the experiment was conducted using Capsicum annuum seeds that were treated with different molar concentrations of NaCl. To determine the optimal concentration for the seed growth, the seeds were monitored for nine consecutive days. In vivo two-dimensional OCT images of the treated seeds were obtained and compared with the images of seeds that were grown using sterile distilled water. The obtained results confirm the feasibility of using OCT for the proposed application. Normalized depth profile analysis was utilized to support the conclusions.
Highlights
Germination of seeds is a growth process during which a plant is contained within its seed.Studies on seed germination and their respective morphological changes plays a vital role in attaining quicker harvesting [1,2,3,4,5]
We have demonstrated the usefulness of optical coherence tomography (OCT) as a tool for continuous in vivo monitoring of morphological changes in seeds
Because maintenance of appropriate soil salinity plays a major role for seed growth, we conducted this study by priming Capsicum annuum seeds with different molar concentrations of salt and with sterile distilled water
Summary
Germination of seeds is a growth process during which a plant is contained within its seed.Studies on seed germination and their respective morphological changes plays a vital role in attaining quicker harvesting [1,2,3,4,5]. Germination can be affected by a variety of internal factors as well as by external factors, such as the soil temperature [6], water oxygen content availability, light and dark conditions, soil salinity [7], soil pH [8], and soil chemical composition [9]. Most of these external factors vary with the seed type. An excess amount of salinity will result in the soil degradation or in the inhibition of the germination process in seeds [12]. Rain water usually has NaCl concentrations of 0.003 g NaCl/L and sea water concentrations of up to 0.030 g NaCl/L
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