Altered Fine Structure of Amylopectin Is Induced by Exogenous Gibberellin During Rice Grain Ripening

When GA₄ was applied to heading stage, it was examined to understand the change of plant hormones and starch during grain filling and ripening. Exogenous gibberellin caused a dramatic decrease in endogenous ABA content. Endogenous GA₄ content in both superior and inferior part was more promoted in G...

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Published inKorean journal of crop science Vol. 51; no. 6
Main Authors Kim, S.K. (Gyeongbuk Provincial Agricultural Technology Administration, Andong, Republic of Korea), Park, S.Y. (Cheju Halla College, Jeju, Republic of Korea), Lee, S.C. (Kyungpook National University, Daegu, Republic of Korea), Lee, I.J. (Kyungpook National University, Daegu, Republic of Korea), E-mail: ijlee@knu.ac.kr
Format Journal Article
LanguageEnglish
Published 01.12.2006
Subjects
ALMIDON
AMIDON
gibberellin A
ORYZA SATIVA
STARCH
superior and inferior grain
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Summary:When GA₄ was applied to heading stage, it was examined to understand the change of plant hormones and starch during grain filling and ripening. Exogenous gibberellin caused a dramatic decrease in endogenous ABA content. Endogenous GA₄ content in both superior and inferior part was more promoted in GA₄-treated rice grain than in the control. GA₁ content of an inferior part was not detected in the control and GA₄-treated rice otherwise GA₄ was detected in all grain parts. Ripened grain rate in GA₄-treated rice grain was lower than that of the control plant.
Bibliography:2007000797
F01
ISSN:0252-9777