Inhibition of Ethylene: Methods and Mechanisms

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What is the primary effect of ethylene on seed germination?

Stimulation of germination (correct)

Inhibition of germination

No effect on germination

Variable effect on germination depending on the crop

What is the effect of ethylene on the color of snap beans?

Enhances green color

Loss of green color (correct)

Turns color to yellow

No effect on color

What is the role of ethylene in the ripening of fruits?

No effect on fruit ripening

Stimulates fruit ripening (correct)

Inhibits fruit ripening

Variable effect on fruit ripening depending on the fruit type

What is the effect of ethylene on the flavor of carrots and parsnip?

Develops bitter flavor Signup and view all the answers

What is the effect of ethylene on the stems of certain vegetables?

Stimulates thickening of stems Signup and view all the answers

What is the effect of ethylene on the growth of adventitious roots on the stems of certain vegetables?

Promotes adventitious root growth Signup and view all the answers

What is the primary effect of reducing temperature on climacteric fruits?

Delay in the onset of ripening Signup and view all the answers

How does cooling affect the starch-sugar balance in certain vegetables?

It alters the starch-sugar balance Signup and view all the answers

What is the benefit of rapid pre-cooling of produce?

Helps maintain desired storage temperature Signup and view all the answers

Why is cooling below 10°C not beneficial for produce sensitive to chilling injuries?

It causes cellular damage Signup and view all the answers

What is the effect of lowering temperature on ethylene production in produce?

Decreases ethylene production Signup and view all the answers

What is the primary goal of harvesting produce in the morning when the temperature is low?

To minimize temperature fluctuations Signup and view all the answers

What is the primary mechanism by which 1-MCP inhibitors control the detrimental effects of ethylene in fruit tissues?

By blocking ethylene receptor sites through binding Signup and view all the answers

What is the effect of temperature on the rate of enzymic reactions involved in respiration in fruits and vegetables?

The rate of reaction approximates doubles for each 10°C rise in temperature Signup and view all the answers

What is the role of potassium permanganate in controlling the detrimental effects of ethylene?

It absorbs ethylene gas through oxidation Signup and view all the answers

What is the purpose of using ethylene filters/screens and sachets in fruit storage?

To absorb ethylene gas and reduce its detrimental effects Signup and view all the answers

What is the formula used to calculate the Q10 value or unknown rate for any temperature difference in enzymic reactions involved in respiration?

Q10 = (R1/R2)10(t2 –t1) = constant Signup and view all the answers

What is the relationship between Q10 and the physiological temperature range?

Q10 does not remain constant over the physiological temperature range Signup and view all the answers