Resumé uit de ingeleverde vragenlijst omtrent het “Haveraaltje” (Heterodera Schachtii)
نویسندگان
چکیده
منابع مشابه
Host Suitability of Rapeseed for Heterodera schachtii.
Because rapeseed, especially canola, has the potential to be grown in rotation with sugarbeet in the north-central region of the United States, this study was initiated to assess its susceptibility to infection by Heterodera schachtii and to develop a screening method for Brassica germplasm. Existing methodology was adapted for growing Brassica juncea, B. napus, B. rapa, Brassica hybrids, and s...
متن کاملPathological Differences in Heterodera schachtii Populations.
Five populations of Heterodera schachtii Schm. from Oregon, Idaho, and Utah did not differ significantly in seedling penetration and rate of emergence and virulence. Another Utah H. schachtii population (Utah 2), however, differed from these five populations in all of the above-mentioned characteristics. More H. schachtii larvae of the Utah 2 population than the other populations penetrated sug...
متن کاملInvasion of Sugarbeet Leaf Blades by Larvae of Heterodera schachtii.
Although Polychronopolis and Lownsbery (1) found that Heterodera schachtii invaded the radicle, hypocotyl, and cotyledons of seedling sugarbeet, they observed no histological or cytological changes other than cellular death and disorganization. Ross (2) reported development of females and brown cysts accompanied by formation of giant cells and hypertrophy in leaves of white clover inoculated wi...
متن کاملImproved methods of hatching Heterodera schachtii larvae for screening chemicals.
The rate of hatching of Heterodera schachtii larvae was greatly increased by placing cysts in sieves enclosed by small disposable cups. An apparatus that permitted rapid storage of second-stage larvae at 10 C prolonged the viability of the larvae.
متن کاملHost-Parasite Interaction of Resistant Sugarbeet and Heterodera schachtii.
The host-parasite relationships between Heterodera schachtii Schm. and the nematode-resistant diploid Beta vulgaris L. line '51501' were examined via serial sections of secondary rootlets. Second-stage larvae penetrated sugarbeet roots and migrated up to 1.95 mm before establishing permanent feeding sites. Most sedentary larvae were oriented parallel to the root axis or in various diagonal or f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Tijdschrift Over Plantenziekten
سال: 1905
ISSN: 0926-3454,1573-8469
DOI: 10.1007/bf02810006