What is senescence in cut flowers?

What is senescence in cut flowers?

• A. The process of photosynthesis
• B. The aging process resulting in wilting and death
• C. The development of new roots
• D. The rapid growth phase

Answer: (B)

Senescence is the aging process of plant tissues that leads to wilting and death. In cut flowers, senescence begins after harvest as water uptake declines and cellular processes shift toward breakdown. This aging is often sped up by ethylene, a hormone that accelerates petal wilting, color fading, and tissue degradation, ultimately shortening vase life. Understanding senescence explains why flowers fade and die even under good conditions, and it highlights why postharvest practices aim to slow this aging—cool temperatures, proper hydration, and managing ethylene exposure help keep blooms fresh longer. The other options describe energy production, root formation, or growth phases, which are not the aging process that causes wilting in cut flowers.

Senescence is the aging process of plant tissues that leads to wilting and death. In cut flowers, senescence begins after harvest as water uptake declines and cellular processes shift toward breakdown. This aging is often sped up by ethylene, a hormone that accelerates petal wilting, color fading, and tissue degradation, ultimately shortening vase life. Understanding senescence explains why flowers fade and die even under good conditions, and it highlights why postharvest practices aim to slow this aging—cool temperatures, proper hydration, and managing ethylene exposure help keep blooms fresh longer. The other options describe energy production, root formation, or growth phases, which are not the aging process that causes wilting in cut flowers.