Discovery of the Potato Cyst Nematode, Heterodera rostochiensis WOLLENWEBER, 1923, (Tylenchida : Heteroderidae) from Peru Guano
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چکیده
منابع مشابه
The chemical composition of the cyst wall of the potato cyst-nematode, Heterodera rostochiensis.
1. Cyst walls of the potato cyst-nematode (Heterodera rostochiensis Woll.) were isolated by sieving a suspension of crushed cysts. About 12mg. of dried cyst walls was obtained from 1000 cysts. 2. The cyst walls contained mainly protein (72%, calculated from nitrogen content). On acid hydrolysis about 77% of the cyst wall went into solution. Of 19 amino acids present, proline, glycine, and alani...
متن کاملThe chemical composition of the egg shells of the potato cyst-nematode, Heterodera rostochiensis Woll.
1. Eggs of the potato cyst-nematode (Heterodera rostochiensis Woll.) were isolated by sieving a suspension of crushed cysts. Eggs were broken open by ultrasonic vibration and the egg shells separated from the released larvae by centrifuging in a potassium tartrate density gradient. About 1 mg. of dried egg shells was obtained from 1000 cysts. 2. The major constituent of the egg shells was prote...
متن کاملWater uptake and hatching in the potato cyst nematode, Heterodera rostochiensis, and the root knot nematode, Meloidogyne incognita.
1. The second-stage larva of the plant parasitic nematode Heterodera rostocfaensis shows very little movement while confined to the egg; on the other hand, the larva of the closely related Meloidogyne incognita is very active 2. Using interference microscopy, it is shown that the water content of the Heterodera larva increases immediately it is liberated from the egg while that of the Meloidogy...
متن کاملHeterodera raskii n. sp. (Heteroderidae: Tylenchina), a Cyst Nematode on Grass, from Hyderabad, India.
Heterodera raskii n. sp. is described and illustrated from specimens collected from roots of bulb grass, Cyperus bulbosus, in Hyderabad, India. The new species belongs to the 'goettingiana' group and differs from closely related H. cyperi by the elongate ovoid shaped cysts and females, greater fenestral length, width, vulval slit, and absence of egg sac. The stylet knob shape was round in secon...
متن کاملDescription of a new record species of Heterodera from China (Tylenchida, Heteroderidae).
A new record species Heterodera ripae was found in the rhizosphere soil of nettle (Urtica sp.) on the bank of the Mangniu River in Shenyang City, Liaoning Province, China. The new record species can be characterized by vulval cone bifenestrate with circular or subcircular semifenestrae, vulval slit length averaging 34.2 μm, vulval bridge mostly broad, underbridge weak, bullae absent; the second...
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ژورنال
عنوان ژورنال: Applied Entomology and Zoology
سال: 1973
ISSN: 0003-6862,1347-605X
DOI: 10.1303/aez.8.97