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Meloidogyne incognita resistance in soybean under Midwest conditions

Zugehörigkeit
Dep. of Botany and Plant Pathology, Purdue Univ., West Lafayette, IN, USA
Kruger, Greg R.;
Zugehörigkeit
Dep. of Botany and Plant Pathology, Purdue Univ., West Lafayette, IN, USA
Xing, Lijuan J.;
Zugehörigkeit
Dep. of Botany and Plant Pathology, Purdue Univ., West Lafayette, IN, USA
LeRoy, Allen R.;
GND
1058931148
Zugehörigkeit
Dep. of Botany and Plant Pathology, Purdue Univ., West Lafayette, IN, USA
Westphal, Andreas

Soybean cultivars of maturity groups II to IV were tested in the greenhouse for resistance to Meloidogyne incognita (Kofoid and White) Chitwood. Selected cultivars were tested in a fi eld of sandy loam soil naturally infested with M. incognita and Heterodera glycines Ichinohe (2004) or in a silt loam soil artifi cially infested with M. incognita (2005). In 2004, H444NRR was resistant to M. incognita, but not to H. glycines; LS94- 3207 and LNX97164-35-5 were resistant to both nematodes; Gateway 427, H444NRR, LNX97164- 35-5, and SB4399CT were moderately resistant to M. incognita in greenhouse tests; HF9665- 2-15 was resistant to M. incognita but highly susceptible to H. glycines. In 2005, LS94-3207, H444NRR, LNX97164-35-5, and Manokin were resistant to M. incognita. In microplots with two sandy loam soils, HF9665-2-15 exhibited tolerance to increasing inoculum levels of M. incognita. High-yielding soybean cultivars in maturity groups II to IV with resistance and tolerance to M. incognita were identifi ed. Under fi eld conditions, resistance to the more widespread nematode H. glycines, combined with resistance to M. incognita, is highly desirable to reduce the risk of yield reduction and to improve cropping sequences that include soybean.

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