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Relationships of Brassica Seed Physical Characteristics with Germination Performance and Plant Blindness

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  • Pedro Bello

    (Seed Biotechnology Center, Department of Plant Sciences, University of California, Davis, CA 95616, USA)

  • Kent J. Bradford

    (Seed Biotechnology Center, Department of Plant Sciences, University of California, Davis, CA 95616, USA)

Abstract

Brassica oleracea is an important crop species that at early growth stages may exhibit failure of the apical growing point, an abnormality called “blindness”. The occurrence of blindness is promoted by exposure to low temperatures during imbibition and germination, but the causes of sensitivity to such conditions are unknown. We combined three analytical seed technology instruments to explore seed physical properties that are highly correlated with quality parameters and might be used directly for grading or sorting seed lots into subpopulations varying in potential susceptibility to blindness. For image analysis, we used the VideometerLab instrument, which can scan 19 wavelengths from ultraviolet to infrared and utilize that information in any combination to potentially identify unique criteria related to seed quality. The iXeed CF Analyzer was utilized to obtain chlorophyll fluorescence values for individual seeds. Chlorophyll contents of many seeds can be used as an indicator of seed maturity, a major contributor to seed quality. Finally, oxygen consumption measurements of individual seeds as obtained with the Q2 instrument are highly correlated with their performance under a wide variety of conditions. Six Brassica seed lots differed in their susceptibility to induction of blindness or loss of viability due to 48 h hydrated incubation at 1.5 ∘ C. Analysis of physical and respiratory parameters identified some measurements that were highly correlated with the occurrence of blindness. Higher chlorophyll content, as detected by the CF-Mobile and certain wavelengths in the Videometer, was associated with greater occurrence of blindness or death following the induction treatment, suggesting that more immature seeds may be susceptible to blindness. Further research is required, but methods to detect and sort such seeds based on physical characteristics appear to be feasible.

Suggested Citation

  • Pedro Bello & Kent J. Bradford, 2021. "Relationships of Brassica Seed Physical Characteristics with Germination Performance and Plant Blindness," Agriculture, MDPI, vol. 11(3), pages 1-21, March.
  • Handle: RePEc:gam:jagris:v:11:y:2021:i:3:p:220-:d:512711
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    References listed on IDEAS

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    1. Lê, Sébastien & Josse, Julie & Husson, François, 2008. "FactoMineR: An R Package for Multivariate Analysis," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 25(i01).
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    1. Alina Maciejewska & Janusz Sobieraj & Dominik Metelski, 2024. "Assessing the Impact of Lignite-Based Rekulter Fertilizer on Soil Sustainability: A Comprehensive Field Study," Sustainability, MDPI, vol. 16(8), pages 1-27, April.
    2. Alan G. Taylor & Masoume Amirkhani & Hank Hill, 2021. "Modern Seed Technology," Agriculture, MDPI, vol. 11(7), pages 1-6, July.
    3. Hamidreza Balouchi & Vida Soltani Khankahdani & Ali Moradi & Majid Gholamhoseini & Ramin Piri & Seyedeh Zahra Heydari & Beata Dedicova, 2023. "Seed Fatty Acid Changes Germination Response to Temperature and Water Potentials in Six Sesame ( Sesamum indicum L.) Cultivars: Estimating the Cardinal Temperatures," Agriculture, MDPI, vol. 13(10), pages 1-17, October.

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