A study on the changes of physiology and biochemistry during zoysiagrass seed development

Abstract

Abstract: This research aimed to provide a scientific theoretical basis for zoysiagrass seed production by investigating changes of physiology and biochemistry during seed development. Every three or five days, seeds of zoysiagrass were harvested after peak anthesis at Jiaozhou in Shandong province, and the changes in seed development were studied. The seed moisture content rose first, then gradually dropped. The fresh weight and dry weight of seeds slowly increased during seed development and finally decreased a little. The soluble sugar content of seeds decreased by about 5.0%. The starch content increased sharply and then slowly decreased, but stayed about 15.0% towards the end of development. The acid phosphoesterase activity of seeds harvested at different times were significantly increased (P＜0.01). IAA and GA contents slowly reduced with seed development. However, the contents of ABA rose gradually and reached 72.7 μg/100 g fresh weight. In conclusion, the optimal harvest time was the 36th days after peak anthesis (about June 15) in this experiment, and when the seed vigor was better, its moisture content and 1 000-seed weight were 26%-28% and 0.89 g, respectively.

CLC Number:

MA Chun-hui, HAN Jian-guo, SUN Jie-feng, WANG Dong. A study on the changes of physiology and biochemistry during zoysiagrass seed development[J]. Acta Prataculturae Sinica, 2009, 18(6): 174-179.

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