oospore sentence in Hindi
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- Oospores survive only 2 3 years in the soil, so crop rotation may be used.
- "P . fragariae " survives in the soil in the form of oospores.
- If the sorghum plants are older, the pathogen will often produce oospores in the leaves.
- The trigger for preferential formation of chamydospores over oospores can be either large temperature or moisture oscillations.
- Only in Mexico and Scandinavia, however, is oospore formation thought to play a role in overwintering.
- Deep tillage also reduces the amount of oospores surviving in the soil and therefore the incidence of the disease.
- The penetration of an oogonium via an antheridium leads to the formation of a sexual spore or an oospore.
- After establishing its haustoria for nutrients, more oospores will begin to form in the cortical cells of the root.
- Studies in Sicily have shown optimum time for oospore germination is between the end of February and the middle of March.
- Oospores, in general, measure around 20-45 micrometers in diameter and have very thick cellulose cell walls for overwintering.
- These oospores can survive for up to 4 years; there are some reports of spores remaining viable 13 15 years.
- Oospores are very sturdy and can remain stagnant in the soil for a long time and therefore crop rotation alone is not effective.
- The germinating oospore undergoes mitosis and gives rise to diploid hyphae which reproduce asexually via mitotic zoospores as long as conditions are favorable.
- The most dependable way to determine if a plant has " P . fragariae " is the presence of microscopic oospores.
- Upon infection, oospores that overwinter on leaf tissue and petioles give rise to sporangiophores which have lemon-shaped sporangia at their tips.
- Searching for the oospores can be like looking for a needle in a haystack-- they are three-hundredths of one millimeter across.
- Oospores are made after the male gamete, antheridium, and female gamete, oogonium, undergo fertilization and then sexual recombination ( meiosis ).
- "Phytophthora cactorum " produces one sexually produced survival spore called an oospore, and one asexually produced survival spore called a chlamydospore.
- "P . halstedii " oospores produce a thin wall which are resistant structures, sexually produced that are essential for its continuation.
- The oospores may directly germinate into a germ tube or indirectly germinate and give rise to sporangia which then indirectly germinates and gives rise to zoospores.
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