Morphological and Biological Parameters of the Knapweed Nematode, Subanguina picridis.
نویسنده
چکیده
Specimens of the knapweed nematode Subanguina picridis (Kirjanova) Brzeski obtained from different host plants were highly variable in measurement and structure. This variability refutes the validity of six Subanguina species attacking plants in the Asteraceae.
منابع مشابه
Biology of Subanguina picridis, a Potential Biological Control Agent of Russian Knapweed.
The knapweed nematode, Subanguina picridis, forms galls on the leaves, stems, and root collar of Russian knapweed, Acroptilon repens. After being revived from a dormant, cryptobiotic state, second-stage juveniles required at least 1 month in a free-living state before becoming infective. Galls were induced on relatively slow-growing host plants that retained their apical meristems at or near th...
متن کاملHost Range of, and Plant Reaction to, Subanguina picridis.
The host range of the knapweed nematode, Subanguina picridis (Kirjanova) Brzeski, under controlled environmental conditions was extended to include, in addition to Russian knapweed, Acroptilon repens (L.) DC., plant species within the Centaureinae, and Carduinae subtribes of the Cynareae tribe of the Asteraceae family. Examination of host response to nematode infection revealed that Russian kna...
متن کاملMass Culture of Subanguina picridis and Its Bioherbicidal Efficacy on Acroptilon repens.
A Russian knapweed (Acroptilon repens) shoot culture system, initiated from shoot tip culture, was used to generate a source of host plant tissue for the rearing of the nematode Subanguina picridis, a biocontrol agent for Russian knapweed. Young shoots growing on solid B5G medium in petri dishes developed galls on leaves, petioles, and shoot tips 7 days after release of 50 nematodes onto the su...
متن کاملEffects of Temperature, Shoot Age, and Medium on Gall Induction by Subanguina picridis in Vitro.
The influence of temperature, shoot age, and medium on gall induction by Subanguina picridis on Russian knapweed (Acroptilon repens) was examined in vitro. The optimal temperature for gall formation was 20 C. Gall induction was delayed as the temperature decreased, and decreased as shoot age increased. Bud primordia (0-day-old shoots and 5-day-old shoots) with an average length of 4.2 mm and 7....
متن کاملDraft Genome Sequence of Rathayibacter sp. Strain VKM Ac-2630 Isolated from Leaf Gall Induced by the Knapweed Nematode Mesoanguina picridis on Acroptilon repens
A draft genome sequence of Rathayibacter sp. strain VKM Ac-2630 was derived using Ion Torrent sequencing technology. The genome size of this strain is 3.88 Mb, with an average G+C content of 72.0%. Genomic evidence of an aerobic mode of respiration and a heterotrophic lifestyle of this bacterium was obtained.
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ورودعنوان ژورنال:
- Journal of nematology
دوره 18 2 شماره
صفحات -
تاریخ انتشار 1986