Effect of Microwave Heat Treatment on Inhibition of Corn Seed Germination

Ambrose, Ashabahebwa; Lee, Wang‐Hee; Cho, Byoung‐Kwan

doi:10.5307/jbe.2015.40.3.224

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…For each category, 800 kernels were acquired with 400 seeds used as the different-year sample and the other 400 seeds used as the aged sample for comparison. Artificial aging of seeds was induced in the rice simples using microwave heat treatment at 700 W input power and 60 s exposure time, which was optimized in advance for this experiment in accordance with the study by Ambrose et al [35].…”

Section: Methodsmentioning

confidence: 99%

Rapid and Nondestructive Measurement of Rice Seed Vitality of Different Years Using Near-Infrared Hyperspectral Imaging

Feng

Sun

et al. 2019

Molecules

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Seed vitality is one of the primary determinants of high yield that directly affects the performance of seedling emergence and plant growth. However, seed vitality may be lost during storage because of unfavorable conditions, such as high moisture content and temperatures. It is therefore vital for seed companies as well as farmers to test and determine seed vitality to avoid losses of any kind before sowing. In this study, near-infrared hyperspectral imaging (NIR-HSI) combined with multiple data preprocessing methods and classification models was applied to identify the vitality of rice seeds. A total of 2400 seeds of three different years: 2015, 2016 and 2017, were evaluated. The experimental results show that the NIR-HSI technique has great potential for identifying vitality and vigor of rice seeds. When detecting the seed vitality of the three different years, the extreme learning machine model with Savitzky–Golay preprocessing could achieve a high classification accuracy of 93.67% by spectral data from only eight wavebands (992, 1012, 1119, 1167, 1305, 1402, 1629 and 1649 nm), which could be developed for a fast and cost-effective seed-sorting system for industrial online application. When identifying non-viable seeds from viable seeds of different years, the least squares support vector machine model coupled with raw data and selected wavelengths of 968, 988, 1204, 1301, 1409, 1463, 1629, 1646 and 1659 nm achieved better classification performance (94.38% accuracy), and could be adopted as an optimal combination to identify non-viable seeds from viable seeds.

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Section: Methodsmentioning

confidence: 99%

Rapid and Nondestructive Measurement of Rice Seed Vitality of Different Years Using Near-Infrared Hyperspectral Imaging

Feng

Sun

et al. 2019

Molecules

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“…Some studies have considered the potential of microwave radiation to control invasive and pest species for commercial, agricultural, or ecological purposes, in particular in the interest of developing nonchemical techniques (Ambrose et al 2015; Barker and Craker 1991; Fleming et al 2005; Sahin and Saglam 2015). Microwave radiation causes dielectric heating of moist materials and offers a means of rapidly reaching the temperature needed for loss of seed viability and inhibition of germination (in a 60 to 90 C range, depending on the authors; Barker and Craker 1991; Bebawi et al 2007; Brodie et al 2007b; Mavrogianopoulos et al 2000; Sahin 2014) and can be considered as a thermal weed control method that has no direct environmental drawbacks, especially as there is no residue to contaminate the surroundings, unlike herbicides.…”

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confidence: 99%

Using Microwave Soil Heating to Inhibit Invasive Species Seed Germination

Wilde

Buisson

Yavercovski

et al. 2017

Invasive plant sci. manag.

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Successful invasive plant eradication is rare, because the methods used target the adult stage, not taking into account the development capacity of a large seedbank. Heating by microwave was considered, because it offers a means to quickly reach the temperature required for loss of seed viability and inhibition of germination. Previous results were not encouraging, because homogeneous and deep-wave penetration was not achieved, and the various parameters that can affect treatment effectiveness were incompletely addressed. This study aimed to determine, under experimental conditions, the best microwave treatment to inhibit invasive species seed germination in terms of power (2, 4, 6 kW) and duration (2, 4, 8 min) of treatments and depending on soil moisture (10%, 13%, 20%, 30%) and seed burial depth (2, 12 cm). Three invasive species were tested: Bohemian knotweed, giant goldenrod, and jimsonweed. The most effective treatments required relatively high power and duration (2kW8min, 4kW4min, 6kW2min, and 6kW4min; 4kW8min and 6kW8min were not tested for technical reasons), and their effectiveness diminished with increasing soil moisture with germination percentage between 0% and 2% for the lowest soil moisture, 0% and 56% for intermediate soil moisture, and 27% and 68% in control treatments. For the highest soil moisture, only 2kW8min and 4kW4min reduced germination percentage between 2% and 19%. Occasionally, germination of seeds located at the 12-cm depth was more strongly affected. Giant goldenrod seeds were the most sensitive, probably due to their small size. Results are promising and justify further experiments before developing a field microwave device to treat large volumes of soil infested by invasive seed efficiently and with reasonable energy requirements. Other types of soil, in terms of texture and organic matter content, should be tested in future experiments, because these factors influence soil water content and, consequently, microwave heating.

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