Yellow Rust and Stem Rust Resistant wheat

Rust-Resistant Wheat for a Flourishing Future

The rust-resistant wheat varieties are specifically developed to combat wheat rust. They are equipped with two types of resistance genes. The first type, All-stage resistance (ASR) genes, provide strong protection from specific rust fungi during all developmental stages of the plant. However, if only a single ASR gene is deployed, the fungi can evolve to overcome this protection. The second type, Adult plant resistance (APR) genes, provide partial resistance during the later development stages of the plant. APRs can confer longer resistance without developing pathogen evolution and can provide broad-spectrum resistance to all rust fungi races. By combining ASR and APR genes, wheat varieties can achieve a more effective and long-lasting resistance against rust.

This technology is TAAT1 validated.

7•7

Scaling readiness: idea maturity 7/9; level of use 7/9

Adults 18 and over: Positive high

The poor: Positive medium

Under 18: Positive low

Women: Positive medium

Climate adaptability: Highly adaptable

Farmer climate change readiness: Significant improvement

Biodiversity: Positive impact on biodiversity

Carbon footprint: A bit less carbon released

Environmental health: Greatly improves environmental health

Soil quality: Improves soil health and fertility

Water use: Much less water used

Problem

Yellow Rust and Stem Rust Epidemics: Yellow rust and stem rust are destructive diseases that cause significant yield losses (50-90%) and can rapidly devastate wheat crops in Sub-Saharan Africa.
Quick Spread of Rust Diseases: These diseases spread rapidly through wind-borne spores, leading to massive losses, as exemplified by the highly virulent African strain of stem rust, Ug99.
Emergence of New Rust Strains: There is a continuous emergence of new strains of rust diseases, making it challenging to control them effectively.
Infections in Native Grasses: Rust diseases can infect native grasses, making it difficult to eradicate them from agricultural landscapes.

Solution

All-Stage Resistance (ASR): These genes provide strong, race-specific protection against rust fungi at all developmental stages of the plant.
Adult Plant Resistance (APR): These genes offer partial resistance during the later stages of the plant’s development. They can confer longer-lasting resistance and provide broad-spectrum protection against all races of rust fungi.
High Yield Potential: Despite the resistance to rust, these varieties maintain a high yield potential, which is crucial for ensuring food security.
Disease Resistance: In addition to rust resistance, these varieties often have resistance to other diseases, enhancing their overall robustness.
Tolerance to Environmental Stresses: These varieties are often bred to be tolerant to various environmental stresses such as drought, further enhancing their resilience.

Key points to design your program

In the near future, this section will provide an overview of this technology's success in various contexts, details on partners offering technical support, training, and implementation monitoring, along with other valuable insights for your projects and programs. These details will be added progressively.

In the meantime, use the 'Request information' button if you need to contact us.

4.1 Ton/ha

average grain yield

440 USD

Total farming operational costs

Countries with a green colour: Tested & adopted
Countries with a bright green colour: Adopted
Countries with a yellow colour: Tested
Countries with a blue colour: Testing ongoing

Countries where the technology is being tested or has been tested and adopted
Country	Testing ongoing	Tested	Adopted
Ethiopia	–No ongoing testing	Tested	Adopted
Kenya	–No ongoing testing	Tested	Adopted
Mozambique	–No ongoing testing	Tested	Adopted
Somalia	–No ongoing testing	Tested	Adopted
South Africa	–No ongoing testing	Tested	Adopted
Sudan	–No ongoing testing	Tested	Adopted
Tanzania	–No ongoing testing	Tested	Adopted
Uganda	–No ongoing testing	Tested	Adopted
Zambia	–No ongoing testing	Tested	Adopted
Zimbabwe	–No ongoing testing	Tested	Adopted

This technology can be used in the colored agro-ecological zones. Any zones shown in white are not suitable for this technology.

Agro-ecological zones where this technology can be used
AEZ	Subtropic - warm	Subtropic - cool	Tropic - warm	Tropic - cool
Arid
Semiarid
Subhumid	–	–	–	–
Humid	–	–	–	–

Source: HarvestChoice/IFPRI 2009

The United Nations Sustainable Development Goals that are applicable to this technology.

Goal 2: zero hunger

Goal 13: climate action

Verification and Adaptation Trials:
- Verify and adapt rust-resistant wheat varieties.
- Typically takes about one year for this process.
Accelerated Seed Multiplication in Outbreaks:
- In the case of severe outbreaks, accelerate seed multiplication.
- Conduct field testing of new varieties during main- and off-seasons.
- This allows farmers to access resistant germplasm in less than a year from its release.
Seed Multiplication Process:
- Seed multiplication of rust-resistant wheat consists of 2-4 stages.
- Follow the same procedures as for other cultivars.
Production of Early-Generation Seed:
- Agricultural research centers produce early-generation or basic seed.
Multiplication on Farms:
- Private farms, farmer cooperative unions, farmer seed producer associations, and model farmers receive the basic seed.
- They multiply large volumes of certified seed.
In-Field Techniques for Maintaining Planting Material:
- Farmers maintain stocks of rust-resistant planting material using in-field techniques.
- One method is the ear-to-row technique, where the best-performing ears are selected and replanted in single lines.
Crop Cultivation:
- Rust-resistant wheat varieties are cultivated with the same planting density and mineral fertilizer input as other improved cultivars.
- Follow local recommendations for cultivation.
Fungicide Spraying:
- Fungicide spraying may be required to protect the resistant wheat crop, depending on disease pressure and local conditions.