Sorghum red stripe virus disease is a relatively new plant illness caused by the Maize Dwarf Mosaic Virus (MDMV). This condition can affect sorghum throughout its entire growth cycle, and symptoms vary depending on the variety of sorghum. In the early stages, small green spots appear between the leaf veins, often in a lobe-like pattern and not uniformly distributed. As the disease progresses, these spots expand across the entire leaf, causing irregular discoloration. The leaves gradually lose their green color, turning yellow or reddish, and eventually forming purplish-red, stripe-like patterns. These lesions are usually restricted by the thick veins of the leaves, and the affected areas become purple and dry over time.
The disease can also appear on the leaf sheaths, stems, and panicles, showing distinct purple stripes. When the ear is infected, it becomes short, the glumes turn red, and the florets may be aborted. In severe cases, the plant fails to head properly or even dies prematurely.
During the seedling stage, infected plants are typically 1/3 to 1/2 the height of healthy plants and may fail to tiller or wither earlier. From the jointing to booting stages, diseased plants reach about 1/2 to 4/5 the height of healthy ones. If the disease appears before heading, the plant height remains relatively normal, leading to only minor yield losses. One key difference between this viral disease and fungal or bacterial infections is the presence of mosaic patterns on young leaves, and no pathogens are found under microscopy when testing severely infected tissues.
In 1996, researchers from Shenyang Agricultural University and the Liaoning Provincial Academy of Agricultural Sciences conducted studies on more than a dozen sorghum varieties in various cities in Liaoning Province, including Huludao, Jinzhou, Shenyang, Tieling, and Yingkou.
The disease generally occurs in sorghum-producing areas, with an average incidence rate of around 10%. In heavily affected regions, the incidence can reach up to 80–90%, sometimes leading to total crop loss. There are significant differences among sorghum cultivars. Hybrids like Shenzha 5 and Liaoza 1, which use T622A as the female parent, are highly susceptible. In contrast, combinations such as Jinza 93, Liaoza 4, and Tieza 10 show less severe symptoms.
The disease is more prevalent on flat land, while hillside and roadside fields tend to have higher infection rates. Stronger plants are generally less affected. Survey results from the Chaoyang County Agricultural Center and the Chaoyang Agricultural School Production Area align with those from Shenyang Agricultural University. Additional findings indicate that plots near villages are more severely affected, especially before rain. After rainfall, the disease tends to be less severe. Liaoza 6 shows strong resistance, and fields treated with organic or bio-organic fertilizers experience lower disease incidence.
To manage Sorghum red stripe virus disease, which has been spreading from Hebei and Shandong provinces and increasing each year, it's crucial to implement comprehensive control strategies. It is recommended to focus on planting disease-resistant varieties, such as Liaoza No. 6.
1. Promote high-resistance hybrid combinations and select resistant parents during breeding.
2. Plant early to ensure timely growth and reduce disease risk.
3. Increase the use of organic and bio-organic fertilizers to improve soil health.
4. Remove weeds, especially those that may act as virus vectors.
5. Ensure proper irrigation, perform regular weeding, and maintain good soil conservation practices.
nutrition powder,Powder healthy food,Powder additive food
Henan chinamian foods CO.LTD , https://www.ooossooo.com