1、involvement of brassinolides in fruit ripening: crosstalk with plant

Brassinolides (BRs) are a kind of endogenous plant hormone that play an important role in regulating fruit ripening. BRs can regulate the process of fruit ripening by interacting with plant growth regulators and transcription factors.

2、Physiological and molecular functions of brassinosteroids during fruit

This review proposes a basis for research of the physiological aspects of BR regulation in fruits and vegetables during their development and post-harvest period, and also points to a direction for in-depth investigation of the molecular mechanisms.

3、Brassinosteroids Application Responses in Fruit Crops

One of the biggest advantages of BRs application is controlling favorable plant responses under abiotic and biotic stresses; plants have been reported to manage these stresses through...

4、Brassinosteroids: An Innovative Compound Family That Could Affect the

It has been proven that exogenous application of BRs in non-climacteric fruits has a high impact on development and compositional changes associated with ripening, apart from increasing tolerance to biotic stress, with the most important being CI.

5、Exogenous application of brassinolide affects ripening, phenotypic

Studies suggested that 24-Epibrassinolide and brassinolide are the most active form of Brassinosteroids. It has a pleiotropic role in the plant system from germination to senescence. Researchers have obtained exciting results of exogenous BRs application on the ripening behaviour of fruits.

Effect of exogenous Brassinolide on improving fruit quality and

Brassinolide can improve fruit quality, increase fruit hardness, regulate fruit endogenous hormone content and increase peel toughness.

What are the functions of brassinolide?

Spraying brassinolide during the crop's growth period regulates vegetative growth, promotes thicker stems and chlorophyll formation, enhances photosynthesis, results in thicker, darker green leaves, and delays leaf senescence.

Brassinosteroids Application Responses in Fruit Crops – A Revi

ses in producing consumer-friendly fruits through BRs application. One of the biggest advantages of BRs application is controlling favorable plant responses under abiotic and biotic stresses; plants have been reported to manage these stresses through modifications in various gene expr.

How to use brassinolide

Brassinolide enhances cucumber seedling resistance and promotes strong seedlings. Usage: Spray the stems and leaves of cucumber with 0.01mg/L solution during the seedling stage, and an additional spray can be added during the growth and fruiting stages.

Brassinosteroids: An Innovative Compound Family That Could

It has been proven that exogenous application of BRs in non-climacteric fruits has a high impact on development and compositional changes associated with ripening, apart from increasing tolerance to biotic stress, with the most important being CI.

The ripening period of pear fruits is a critical stage in the growth cycle of pear trees, during which fruit development and quality formation have a decisive impact on the overall growth and yield of the tree. Brassinolide, a plant growth regulator, is widely used in agriculture, particularly for promoting crop growth, increasing yields, and improving product quality. Below is a detailed explanation of the benefits and application methods of using brassinolide during the pear fruit ripening period.

I. Mechanism of Action of Brassinolide

Brassinolide is a compound with multiple bioactivities, primarily functioning through the following pathways:

1. Inhibition of Ethylene Synthesis: Ethylene, a plant hormone that accelerates fruit ripening and senescence, is effectively suppressed by brassinolide. This delays the ripening process, thereby extending the storage life of pear fruits.
2. Promotion of Cell Division and Elongation: Brassinolide stimulates mitosis and cell elongation, increasing cell numbers and resulting in fuller fruits.
3. Enhancement of Photosynthesis: By improving leaf photosynthetic efficiency, brassinolide boosts the accumulation of photosynthates, providing adequate nutrients for fruit development.
4. Regulation of Water Balance: Brassinolide improves water use efficiency, reduces water loss, and maintains optimal moisture levels in fruits.

II. Application of Brassinolide During Pear Fruit Ripening

Using brassinolide during this period can significantly extend storage duration and reduce losses caused by natural ripening. Specific application methods include:

1. Timing of Application

• Post-Harvest Treatment: Apply brassinolide shortly after harvest (when fruits are not fully ripe) to slow ripening and prolong storage.
• Pre-Harvest Treatment: Apply before fruits enter the ripening phase to prevent premature maturation and ensure quality.

2. Application Methods

• Foliar Spraying: Dilute brassinolide and evenly spray onto pear tree leaves to enhance absorption.
• Root Application: Dissolve brassinolide in water and apply near the roots via irrigation systems or soil injectors to promote uptake.
• Fruit Spraying: For harvested pears, spray with brassinolide solution to extend storage life.

3. Precautions

• Dose Control: Use appropriate dosages to avoid phytotoxicity.
• Environmental Factors: Adjust application rates and frequency based on local climate conditions.
• Compatibility with Pesticides: Exercise caution when mixing brassinolide with other pesticides, and consult professionals to avoid adverse interactions.

III. Evaluation of Brassinolide Application Effects

Trials across different pear varieties, application methods, and environmental conditions demonstrate the following outcomes:

• Extended Storage Life: Brassinolide-treated pears show a 20%–30% longer storage period compared to untreated fruits.
• Improved Quality: Treated fruits exhibit better taste, color, and storage resistance.
• Economic Benefits: Despite higher costs, brassinolide’s ability to reduce losses and increase yields makes it economically viable.

IV. Future Prospects and Challenges of Brassinolide Application

With advancements in modern agriculture, brassinolide’s use during pear ripening is expanding. challenges remain:

• Cost Issues: Higher prices may limit adoption in some regions.
• Resistance Risks: Overreliance could lead to reduced effectiveness due to potential resistance. Adhere to "rational use" principles to minimize risks.

brassinolide is a highly effective growth regulator with significant potential for improving pear storage, yield, and quality. Scientific application can yield substantial economic returns, but careful consideration of costs, resistance, and environmental factors is essential to ensure safe and efficient use.