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Stripe Rust
Consider the following statements:
- Stripe Rust of wheat is a viral disease caused by the virus Begomovirus.
- The first sign of stripe rust is the appearance of yellow streaks (pre-pustules), followed by small, bright yellow, elongated uredial pustules arranged in conspicuous rows on the leaves.
Choose the correct answer from the codes given below:
A |
Only 1
|
|
B |
Both 1 and 2
|
|
C |
Only 2
|
|
D |
Neither 1 nor 2
|
Your Ans is
Right ans is C
Your Answer Is Correct
Your Answer Is Wrong
Explanation :
- Yellow rust or stripe rust (Puccinia striiformistritici) is an important disease of wheat (Triticum aestivum), especially in cool climates.
- Ripe rust of wheat is caused by the basidiomycete fungus Puccinia striiformis in the order Uredinales.
- It is considered to be an obligate parasite.
- The symptoms are symmetrical “stripe” lesions along the leaf, bearing orange-yellow pustules. These are located just underneath the upper leaf layer (epidermis), and are much less compact than brown rust pustules.
- The ideal growth conditions for yellow rust are temperatures of between 8-13°C for spore germination and penetration, and 12-15° C for further development and with free water.
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