Hatch and Emergence of Heterodera glycines in Root Leachate from Resistant and Susceptible Soybean Cultivars

Egg hatch and emergence of second-stage juveniles (J2) of Heterodera glycines races 3 and 4 from cysts exposed to soybean root leachate of cv. Fayette (resistant to H. glycines) and H. glycines-susceptible cultivars A2575, A3127, and Williams 82 were determined in three sets of experiments. In the f...

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Veröffentlicht in:Journal of nematology. - 1969. - 28(1996), 4 vom: 10. Dez., Seite 501-9
1. Verfasser: Sikora, E J (VerfasserIn)
Weitere Verfasser: Noel, G R
Format: Aufsatz
Sprache:English
Veröffentlicht: 1996
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Glycine max Heterodera glycines diapause emergence hatch nematode race resistance soybean soybean cyst nematode
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245 1 0 |a Hatch and Emergence of Heterodera glycines in Root Leachate from Resistant and Susceptible Soybean Cultivars 
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520 |a Egg hatch and emergence of second-stage juveniles (J2) of Heterodera glycines races 3 and 4 from cysts exposed to soybean root leachate of cv. Fayette (resistant to H. glycines) and H. glycines-susceptible cultivars A2575, A3127, and Williams 82 were determined in three sets of experiments. In the first experiment, cysts of both race 3 and race 4 were exposed to leachate of 8-week-old plants for a 2-week period. In the second experiment, cysts from populations of races 3 and 4 were raised on cultivars A2575, A3127, and Williams 82. Cysts then were exposed to leachate from 8-week-old plants for a 2-week period in all possible race-per-cultivar combinations. In the third experiment, cysts of races 3 and 4 were exposed at 4-day intervals to leachate from plants as the plants developed 7 to 59 days after planting. In experiments 1 and 2, leachate from 8-week-old Williams 82 and A3127 stimulated more hatch and emergence of H. glycines than leachate from A2575, Fayette, or the control. In the first experiment, cumulative hatch and emergence were greater for race 3 than for race 4. In experiment 2, no apparent relationship developed between leachate from a cultivar and the population developed on that cultivar in terms of stimulation of hatch and emergence. In the third experiment, A2575 stimulated more hatch and emergence of both race 3 and race 4 than A3127, Fayette, and Williams 82. Leachate from Fayette stimulated less hatch and emergence of both race 3 and race 4. Hatch and emergence were greatest during the initial 12 days of the experiment 
650 4 |a Journal Article 
650 4 |a Glycine max 
650 4 |a Heterodera glycines 
650 4 |a diapause 
650 4 |a emergence 
650 4 |a hatch 
650 4 |a nematode race 
650 4 |a resistance 
650 4 |a soybean 
650 4 |a soybean cyst nematode 
700 1 |a Noel, G R  |e verfasserin  |4 aut 
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