Relationships between changes of kernel nutritive components and seed vigor during development stages of F_1 seeds of sh_2 sweet corn |
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| Authors: | Dong-dong CAO Jin HU Xin-xian HUANG Xian-ju WANG Ya-jing GUAN Zhou-fei WANG |
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| Institution: | Dong-dong CAO1,Jin HU1,Xin-xian HUANG1,Xian-ju WANG1,Ya-jing GUAN1,Zhou-fei WANG1,2 (1Seed Science Center,College of Agriculture , Biotechnology,Zhejiang University,Hangzhou 310029,China) (2State Key Laboratory of Crop Genetics , Germplasm Enhancement,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | The changes of kernel nutritive components and seed vigor in F1 seeds of sh2 sweet corn during seed development stage were investigated and the relationships between them were analyzed by time series regression (TSR) analysis. The results show that total soluble sugar and reducing sugar contents gradually declined, while starch and soluble protein contents increased throughout the seed development stages. Germination percentage, energy of germination, germination index and vigor index gradually increased along with seed development and reached the highest levels at 38 d aider pollination (DAP). The TSR showed that, during 14 to 42 DAP, total soluble sugar content was independent of the vigor parameters determined in present experiment, while the reducing sugar content had a significant effect on seed vigor. TSR equations between seed reducing sugar and seed vigor were also developed. There were negative correlations between the seed reducing sugar content and the germination percentage, energy of germination, germination index and vigor index, respectively. It is suggested that the seed germination, energy of germination, germination index and vigor index could be predicted by the content of reducing sugar in sweet corn seeds during seed development stages. |
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| Keywords: | Sh2 sweet corn Kernel nutritive component Seed vigor Time series regression (TSR) analysis |
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