Although there have been many studies on wheat seed germination, little information is available concerning the endosperm structural changes affected by exogenous hormones. In this paper, a strong gluten wheat variety, Yannong 19, and a weak gluten variety, Yangmai 13, were used to
analyse the effects of GA3 and ABA on seed germination and structural changes. Soaking seeds in GA3 significantly improved germination and seedling height and accelerated the α-amylase activity at 1-3 days after imbibition (DAI). Starchy endosperm was consumed rapidly
at 3-5 DAI and mostly depleted at 7 DAI. Seeds treated with GA3 could enhance the speed of amyloplast degradation while ABA had the opposite effects. Protein storage vacuoles (PSVs) and cell nucleus in the aleurone layer cells showed obvious structural changes at 5 DAI. Their degradation
occurred later and slower than that of the starchy endosperm, and these processes were accelerated by GA3 but lowered by ABA. There were differences in response to GA3 and ABA between the two varieties. The findings will be helpful to further clarify the relationship
between structure and function of germinating wheat seeds.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
April 1, 2016
This article was made available online on February 16, 2016 as a Fast Track article with title: "Effects of exogenous gibberellic acid and abscisic acid on germination, amylases, and endosperm structure of germinating wheat seeds".
More about this publication?
Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Membership Information
- Ingenta Connect is not responsible for the content or availability of external websites