Response of seed vigor to experimental warming in a double rice cropping system
Climate warming affects rice seed vigor during ripening, which plays a crucial role in seed quality. However, the actual response of rice seed vigor to warming is still unclear. In this study, seeds after warming treatment in a double rice cropping system were used to determine seed vigor and relate...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Crop and Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2773126X24000261 |
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| author | Shiqi Yang Taotao Yang Ruoyu Xiong Xueming Tan Yongjun Zeng Xiaohua Pan Yanhua Zeng |
| author_facet | Shiqi Yang Taotao Yang Ruoyu Xiong Xueming Tan Yongjun Zeng Xiaohua Pan Yanhua Zeng |
| author_sort | Shiqi Yang |
| collection | DOAJ |
| description | Climate warming affects rice seed vigor during ripening, which plays a crucial role in seed quality. However, the actual response of rice seed vigor to warming is still unclear. In this study, seeds after warming treatment in a double rice cropping system were used to determine seed vigor and related physiological traits during germination. Warming treatment significantly improved the germination index (GI), seed vigor index (VI), and seedling dry weight (SDW) for the late-season rice seeds but had no effect on hull thickness, grain weight, and starch and protein contents for both early- and late-season rice seeds, and these parameters were highly associated with germination rate, GI, VI, and SDW. Warming treatment increased gibberellin (GA) content and α-amylase and β-amylase activities in endosperm and coleoptile in both seasons during the later stage of germination, reaching a significant level on the 7th d. Moreover, indole-3-acetic acid (IAA) content was consistently increased in the coleoptile but decreased in the endosperm in response to warming, and warming did not affect zeatin content. These results suggest that future global warming will improve rice seed vigor by regulating the synthesis of endogenous hormones and amylases, especially in the late-season rice. |
| format | Article |
| id | doaj-art-e8a6c87584b54c85b5457dcd5b748c8f |
| institution | OA Journals |
| issn | 2773-126X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Crop and Environment |
| spelling | doaj-art-e8a6c87584b54c85b5457dcd5b748c8f2025-08-20T02:35:04ZengElsevierCrop and Environment2773-126X2024-12-013419420210.1016/j.crope.2024.07.002Response of seed vigor to experimental warming in a double rice cropping systemShiqi Yang0Taotao Yang1Ruoyu Xiong2Xueming Tan3Yongjun Zeng4Xiaohua Pan5Yanhua Zeng6Ministry of Education and Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, ChinaRice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, ChinaMinistry of Education and Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, China; Crop Breeding and Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, ChinaMinistry of Education and Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, ChinaMinistry of Education and Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, ChinaMinistry of Education and Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, ChinaMinistry of Education and Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, China; Corresponding author.Climate warming affects rice seed vigor during ripening, which plays a crucial role in seed quality. However, the actual response of rice seed vigor to warming is still unclear. In this study, seeds after warming treatment in a double rice cropping system were used to determine seed vigor and related physiological traits during germination. Warming treatment significantly improved the germination index (GI), seed vigor index (VI), and seedling dry weight (SDW) for the late-season rice seeds but had no effect on hull thickness, grain weight, and starch and protein contents for both early- and late-season rice seeds, and these parameters were highly associated with germination rate, GI, VI, and SDW. Warming treatment increased gibberellin (GA) content and α-amylase and β-amylase activities in endosperm and coleoptile in both seasons during the later stage of germination, reaching a significant level on the 7th d. Moreover, indole-3-acetic acid (IAA) content was consistently increased in the coleoptile but decreased in the endosperm in response to warming, and warming did not affect zeatin content. These results suggest that future global warming will improve rice seed vigor by regulating the synthesis of endogenous hormones and amylases, especially in the late-season rice.http://www.sciencedirect.com/science/article/pii/S2773126X24000261AmylaseGerminationGlobal warmingHormoneRiceSeed vigor |
| spellingShingle | Shiqi Yang Taotao Yang Ruoyu Xiong Xueming Tan Yongjun Zeng Xiaohua Pan Yanhua Zeng Response of seed vigor to experimental warming in a double rice cropping system Crop and Environment Amylase Germination Global warming Hormone Rice Seed vigor |
| title | Response of seed vigor to experimental warming in a double rice cropping system |
| title_full | Response of seed vigor to experimental warming in a double rice cropping system |
| title_fullStr | Response of seed vigor to experimental warming in a double rice cropping system |
| title_full_unstemmed | Response of seed vigor to experimental warming in a double rice cropping system |
| title_short | Response of seed vigor to experimental warming in a double rice cropping system |
| title_sort | response of seed vigor to experimental warming in a double rice cropping system |
| topic | Amylase Germination Global warming Hormone Rice Seed vigor |
| url | http://www.sciencedirect.com/science/article/pii/S2773126X24000261 |
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