Ultraweak chemiluminescence of rice seeds during accelerated aging

Wenli Chen; Da Xing; Yonghong He

doi:10.1117/12.462545

12 April 2002 Ultraweak chemiluminescence of rice seeds during accelerated aging

Wenli Chen, Da Xing, Yonghong He

Proceedings Volume 4536, International Workshop on Photonics and Imaging in Biology and Medicine; (2002) https://doi.org/10.1117/12.462545
Event: International Workshop on Photonics and Imaging in Biology and Medicine, 2001, Wuhan, China

Abstract

Ultraweak Chemiluminescence (UCL) studies of different aging degree of rice (Oryza sativa L.) seeds stored in a high temperature 40 degree(s)C and high relative humidity 90% environment (0 day, 8 days, 15 days, and 22 days) were carried out. We firstly observed that aging degree of rice seeds was positive correlation with ultraweak chemiluminescence during the early imbibition (0-1h). Addition of water to rice seeds stimulates ultraweak chemiluminescence, the intensity of which depends upon aging degree of seeds. The shorter the seed accelerated aging time was, the higher the intensity of the UCL in the early imbibition period, the lower hydrogen peroxide (H₂O₂) concentration of rice seeds, the higher percentage seed germination. The germination and superoxide dismutase (SOD) activity of dry rice seeds was obvious positive correlation with the intensity of UCL. While catalase (CAT) activity of rice seeds was determined. Mechanism of ultraweak chemiluminescence was discussed. It was concluded that the store time of rice seeds could be judged from their UCL characters during the early imbibition period, which might be a way to examine vigor of seeds.

Citation Download Citation

Wenli Chen, Da Xing, and Yonghong He "Ultraweak chemiluminescence of rice seeds during accelerated aging", Proc. SPIE 4536, International Workshop on Photonics and Imaging in Biology and Medicine, (12 April 2002); https://doi.org/10.1117/12.462545

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