Characteristics of Seed Vigor in Rice Varieties with Different Globulin Accumulations |
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| Authors: | Liling Peng Hulun Lu Jiajin Chen Ziyan Wu Zitong Xiao Xindong Qing Jintao Song Zhoufei Wang Jia Zhao |
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| Affiliation: | The Laboratory of Seed Science and Technology, Guangdong Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China |
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| Abstract: | Seed vigor of rice is an important trait for direct seeding. The objective of this study was to reveal the relationship between globulin and seed vigor, and then to explore a method for evaluating seed vigor. Several rice varieties with different levels of 52 kDa globulin accumulation were used to compare seed vigor under normal and aged conditions. Results showed that varieties with high globulin accumulation obtained significantly higher seed vigor, measured by germination percentage and germination index, compared with those varieties with low globulin accumulation under normal and aged conditions. Meanwhile, a significantly higher accumulation of reactive oxygen species (ROS) was observed in the early germinating seeds of varieties with high globulin accumulation compared to those varieties with low globulin accumulation under normal and aged conditions. Collectively, the globulin content could be applied in the evaluation of seed vigor, which contributes to the selection of rice varieties for direct seeding. |
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| Keywords: | rice seed vigor globulin protein reactive oxygen species direct seeding |
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