Screening techniques and sources of resistance to nematodes in cool season food legumes |
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Authors: | S. B. Sharma R. A. Sikora N. Greco M. Di Vito G. Caubel |
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Affiliation: | (1) Legumes Pathology, ICRISAT, Patancheru P. O., 502 324, Andhra Pradesh, India;(2) Institut für Pflanzenkrankheiten der Rheinischen, Friedrich Wilhelms Universität, Nussallee 9, 5300 Bonn, Germany;(3) Istituto di Nematologia Agraria, C.N.R., 70126 Bari, Italy;(4) Laboratoire de Zoologie, INRA, 35650 Le Rheu, France |
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Abstract: | Identification of sources of resistance in cool season legumes to cyst (Heterodera spp.), root-knot (Meloidogyne spp.), and stem nematode (Ditylenchus dipsaci) is generally based on number of cysts on roots, root-knot nematode induced gall index, and stem nematode reproduction in shoot tissue, respectively. Various levels of resistance to cyst nematodes have been detected in chickpea and pea. Resistance has also been identified in chickpea, faba bean, and pea to the root-knot nematodes. Broad based durable sources of resistance to plant parasitic nematodes are required. Basic research is needed to develop transgenic plants with resistance based on hatch stimulants, inhibitors, toxins, or repellents found in antagonistic rhizosphere microorganisms. Selection of genotypes that favor development of beneficial rhizosphere microorganisms or root endophytes that increase the plant resistance to nematode infection deserves attention. |
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Keywords: | chickpea cyst nematodes faba bean lentil pea root-knot nematodes stem nematode |
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