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Study on the Effects and Mechanisms of Putrescine on Kernel Development and Germination of Maize
Polyamine;Kernel development;Germination;Sink activity;Maize
|Issue Date: ||2013-02-05T02:25:40Z
The concents of PUT and SPD of germination seeds of maize of Taninung NO.1 reached the maximum at the 36th hour of germination and then decreased. The contents of polyamines in embryo are much more than in endosperm. The activity of α-amylase at early stage of germination was low and increased significantly at the 48th hour of germination. Treated with D-arginine (D-ARG), an inhibitor of PUT synthesis, results that decreased the fresh weight, the contents of PUT and SPD of embryo and endosperm during germination. In the mean times, treated with D-ARG and PUT ivcreased the fresh weight, the contents PUT and SPD, and the activity of α-amylase.
Germination seeds treated with PEG(an osmotic regulator), NaC1, CaC12(a heavy mental) or low temperature decreased the contents of PUT, increased or decreased the contents of SPD in embryo and endosperm, and decreased the activity of α-amylase in endosperm. However, the cganges of fresh weight by pH treatment seemed not correlation with the contents of PUT, SPD and the activity of α-amylase in seeds.
For those we suggest that the contents of PUT and SPD correlate to the activity of α-amylase during germination of maize under stress.
|Relation: ||國科會計畫, 計畫編號: NSC89-2313-B018-001; 研究期間: 8808-8907|
|Appears in Collections:||[生物學系] 國科會計畫|
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