How do endogenous hormone levels change in rubber trees treated with GA3 and CCC?
Label:chem
Topic
Hormones such as gibberellin (GA), indole-3-acetic acid (IAA), and abscisic acid (ABA) play crucial roles in regulating plant growth and development, including flowering. Understanding the changes in endogenous hormone levels can provide insights into the mechanisms underlying flowering inhibition in rubber trees.
Answer
Endogenous hormone levels in rubber trees treated with GA3 and CCC show significant changes. GA3 treatment significantly increases endogenous GA3 and IAA levels, while CCC treatment increases endogenous GA3 levels but does not significantly affect IAA levels. CCC treatment also reduces endogenous ABA levels. These changes in hormone levels suggest that GA3 and CCC regulate flowering through different mechanisms, with GA3 promoting GA and IAA accumulation and CCC affecting GA and ABA levels. The study indicates that these hormonal changes contribute to the inhibition of flowering in rubber trees.
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