sporangium Learn more about sporangium
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Control of frost blight of growing litchi
Litchi from young fruit to ripe fruit, fruit stalk and fruiting branchlets can be damaged by litchi downy blight, and the leaves can also occur at high humidity. Local chlorosis on the symptomatic leaves, white mildew layer on the back, fruiting body of the pathogen, but usually at the peak of the disease, the leaves have aged, so the field
2020-11-08 Species litchi frost blight disease control from childhood fruit to -
The main characteristics of the microstructural plants of the sporangium of the common mosses
Thin sac moss is a kind of bryophyte that grows between 900m and 2200 m above sea level. this kind of bryophyte grows mainly in peat bogs of high mountains and plains, as well as on wet rock surfaces and sandy soil. A thin sac moss is a tufted moss.
2019-03-28 Common moss species thin sac sporangium conspicuous -
The blight of impatiens
[symptoms] mainly damage the stem. The first root and stem showed oil-stained dark green strip patches, which became black-brown and irregular after rapid expansion, and in severe cases, the stems and leaves all blackened, and the plant was quickly folded and the root neck sunken, resulting in plant lodging and death. Under the condition of humidity saturation and long duration, the disease developed sparse white mold, that is, the sporangium and sporangium of the pathogen. [morphological characteristics of pathogens] grow fast and produce more spores on CMA, OMA and V4A medium, and grow on PDA medium
2019-01-16 -
Symptoms and Control methods of Salvia miltiorrhiza Blight
Symptoms and Control methods of Salvia miltiorrhiza Blight
2018-06-29 -
Sorghum downy mildew
Sorghum seedling blight-symptom sorghum can occur when it grows to 4-5 leaves. It begins with the lower leaf and expands upward. The infected leaves produce purplish red stripes and gradually unite, causing the leaves to die gradually from the top and the seeds turn brown. Sorghum seedling blight-pathogen. Fusarium oxysporum, which is called Fusarium moniliforme, is a subphylum fungus. In PDA medium.
2018-09-11 -
Tomato late blight
Tomato late blight, which is called persimmon blight by vegetable farmers, is a destructive disease of tomato. -symptom recognition can occur in both seedling and adult stage. When the seedlings fell ill, the leaves appeared dark green flooding spots, which quickly expanded to the petiole and stem, making it thinner and dark brown, causing the whole plant to wilt or fold. When the humidity is high, the disease department.
2018-09-15 -
Control methods of Rhizopus soft rot of lily bulb
First, the symptoms of damage: during the storage or transportation of the lily bulb, there are primary water stains on the outer skin, and then the color becomes darker, with a slightly pungent smell, the bulb becomes soft, and in serious cases, the bulb has destructive decay, and sometimes there is a thick mycelium layer on the bulb, that is, the cyst peduncle and sporangium of the pathogen. Second, the shape of the pathogen is special.
2018-09-10 -
Soybean disease control: downy mildew
[distribution and damage] it occurs in all soybean producing areas all over the country, especially in Northeast and North China where the temperature is cold. The disease is caused by fungal infection of Peronosporamanschurica (Naum.) Jyd.etGaum in Northeast China. Generally, the output is reduced by 6%, the price of beans is reduced by 15%, and the damage rate of beans is about 10%. Except for the great harm.
2018-09-12 -
How does ginseng gray mildew prevent?
How does ginseng gray mildew prevent? Please introduce the method of ginseng gray mold symptoms: damage ginseng leaves, leaf spots limited by veins, polygonal or irregular shape. Light brown, the back of the spot sparsely grayish white or yellowish thin mold layer, that is, the sporangium and sporangium of the pathogen. The late stage of the disease is easy to break...
2018-07-18 -
Is the fern poisonous? what if the leaves turn yellow?
Dryopteris is a good plant to purify the air, and it can also be used as a potted plant, so is it poisonous? What if the leaves of Dryopteris fern turn yellow? Is the fern poisonous: Dryopteris is not poisonous. Clematis, also known as iron grass, young girl's hair, iron grass, water pig hair soil, etc., taste light, bitter, cool, non-toxic.
2019-01-24 -
What is the flower language of Dryopteris?
What is the flower language of Dryopteris?
2018-07-05 -
Is Iron Poison?
Is Iron Poison?
2018-07-05 -
Disease Ganoderma lucidum Mucor
Mucormucedo (L.) Brefeld, belonging to the subphylum Zygomycetes, Mucor order, Mucor. It can infect edible fungi such as Ganoderma lucidum, Tremella fuciformis, Pleurotus ostreatus and so on. In serious cases, it can lead to the scrapping of bacteria. Symptom Mucor can secrete organic acids and toxins and inhibit the growth of Ganoderma lucidum hyphae. After the injury of the culture medium, the mycelium is gray and stout, and the growth rate is fast. In the later stage, many small yellow-white round granules were produced at the top of the aerial hyphae, and then gradually turned black.
2019-01-15 -
How to maintain kidney fern
Kidney fern is named grate grass. It is a perennial evergreen herb of Orchidaceae. Leaf blade pinnately parted, lanceolate, bright green, densely clustered. The sporangium is born at the top of the upper veinlet of each lateral vein of the leaflet, and the sporangium is kidney-shaped. The common cultivated plants of the same genus are Dryopteris Dryopteris, Dryopteris przewalskii, Dryopteris przewalskii and so on.
2019-01-05 -
How to cure grape downy mildew?
How to cure grape downy mildew?
2018-08-13 -
Seedling cultivation technique of porphyra yezoensis planting technique of porphyra yezoensis
Illumination: light should be regulated in time, starting with 3000 lux, then decreasing to about 500 lux after forming sporangium branches. Temperature: when the temperature reaches 24 ℃, porphyra yezoensis will be inoculated from fruit spores to nursery seedlings, and the seedlings will be picked early after inoculation.
2020-11-08 Stripe porphyra seedling technology planting summary lighting should timely -
What is the last word in the Qur 'an?
Adiantum is also known as iron wire grass, iron wire grass, water pig hair soil, etc., black petiole slender and shiny, similar to human hair, plus its texture is very soft, like a girl's soft hair, so it is also known as a girl's hair, below we will look at a card iron wire
2020-11-10 The latest clematis fern flower language what is alias iron wire -
Potato cancer disease
(pathogen name) Synchytriumendobioticum (Schilb.) Percival (host crop) potato, tomato, Solanum nigrum, etc. (disease diagnosis) it mainly damages the underground part of the plant, and it is common on potato tubers and stolons. The bud eyes and stolons of the killed tubers, because the bacteria stimulate the cells to divide continuously, forming tumors of different sizes, irregular shapes and rough protuberances, shaped like cauliflower. The surface of the damaged potato is often cracked. The cancer tissue in the early stage is yellow and white, exposed to the earth.
2019-01-16 -
Control of downy mildew of Radix Isatidis
Symptoms: yellow-white disease spots with inconspicuous edges appeared on the leaves, gradually enlarged and limited by leaf veins. Become polygonal or irregular. There is a layer of gray downy mildew on the corresponding back, that is, the pathogen cyst peduncle and spores exposed outside the host.
2020-11-08 Species Radix Isatidis frost mildew control symptoms disease leaves in -
Is the latest clematis poisonous?
Dryopteris is a perennial herb of the genus Dryopteris of the family Pteridaceae, which has high ornamental and medicinal value, strong adaptability, easy cultivation and suitable for indoor perennial potted plants. it is one of the most popular potted foliage plants in the home. Let's do it together.
2020-11-10 The latest clematis ferns poisonous moth pteridaceae