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WANG Xue-Jing, BU Hai-Yan, ZHOU Xian-Hui, XU Dang-Hui, LIU Wei, QI Wei, GE Wen-Jing. Effect of Seed Shape on Germination in an Alpine Meadow on the Eastern Qinghai-Tibet Plateau[J]. Plant Science Journal, 2016, 34(3): 391-396. DOI: 10.11913/PSJ.2095-0837.2016.30391
Citation: WANG Xue-Jing, BU Hai-Yan, ZHOU Xian-Hui, XU Dang-Hui, LIU Wei, QI Wei, GE Wen-Jing. Effect of Seed Shape on Germination in an Alpine Meadow on the Eastern Qinghai-Tibet Plateau[J]. Plant Science Journal, 2016, 34(3): 391-396. DOI: 10.11913/PSJ.2095-0837.2016.30391

Effect of Seed Shape on Germination in an Alpine Meadow on the Eastern Qinghai-Tibet Plateau

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This work was supported by grants from the National Natural Science Foundation of China(41171046), and the Fundamental Research Funds for the Central Universities(lzujbky-2013-100).

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  • Received Date: December 23, 2015
  • Revised Date: January 31, 2016
  • Available Online: October 31, 2022
  • Published Date: June 27, 2016
  • The relationship between seed germination characteristics and seed shape (three-dimensional variance of length, width, and height), seed volume, and surface/volume ratio were studied. We discussed the influence of seed shape and size on seed germination. The results showed that: (1) germination percentage and germination rate were both significantly positively correlated with variances in dimension and surface/volume ratio, and significantly negatively correlated with seed volume; (2) mean seed germination time was significantly negatively correlated with seed volume, but significantly positively correlated with seed surface/volume ratio, and the variances in dimension and seed volume had no obvious effects on mean germination time. Accordingly, small, elongated seeds had higher germination percentages and rates, while large, compact seeds showed a delay in germination. The small seeds had a larger surface/volume ratio, which might explain their higher germination percentage and rate. Our study provides a theoretical basis for the formation mechanism of a soil seed bank.
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