Effects of electron acceptors on removal of antibiotic resistant Escherichia coli, resistance genes and class 1 integrons under anaerobic conditions
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Reproduction of a root-knot nematode population on flue-cured tobacco homozygous for Rk1 and/or Rk2 resistance genes and the effect of soil temperature on resistance gene efficacy Pollok, Jill (Virginia Tech, 2015-09-01)Utilizing resistant cultivars is a main control strategy for root-knot nematodes in flue-cured tobacco (Nicotiana tabacum L.). Most commercial cultivars possess the Rk1 gene, providing resistance to races 1 and 3 of ...
GROWTH ANALYSES AND PATTERNS OF CROSS-RESISTANCE IN FOUR IMIDAZOLINONE-RESISTANT SMOOTH PIGWEED (Amaranthus hybridus) POPULATIONS Poston, Daniel Hasford (Virginia Tech, 1999-09-28)Studies were conducted in 1996 through 1999 to: (1) evaluate the responses of one imidazolinone (IMI)-susceptible (S) and four -resistant (R1, R2, R3, and R4) smooth pigweed populations to various acetolactate synthase ...