48, AQ, and PI 53009, respectively) were also susceptible
Box 30003, MSC 3Q, New Mexico State University, Las E UC individuals.Statistical analysis Continuous variables are Cruces, NM 88003. Half the plots had been pre-infested with M. incognita. Plants were fertilized and irrigated as required all through the season. Pod count, total pod weight, and RKN eggs/g dry root have been recorded at harvest. One Nematador isolate showed the least RKN reproduction (four,533 eggs/g dry root) in comparison with susceptible Mesilla (78,689 eggs/ g dry root). Pod yield and weight were equivalent amongst infested and.48, AQ, and PI 53009, respectively) had been also susceptible with GI ranging from four.five to four.7. Twelve Cucurbita maxima x C. moschata commercial squash hybrid rootstocks had GI ranging from four.two for `Carnivor' to five.0 for Jing Xin No.3. The standard Cucurbita maxima x C. moschata hybrid `Strong Tosa' also was very susceptible with GI=4.9. Field test, Charleston, SC. The scion `Athena' melon (C. melo) was grafted on eight distinctive cucurbit rootstocks and evaluated inside a field that was extremely infested with M. incognita. Rootstocks of Benincasa hispida, Cucurbita maxima x C. moschata, Cucurbita argyrosperma, C. melo, C. maxima, and Cucurbita ficifolia were all extremely susceptible to RKN with numbers of M. incognita eggs per gram fresh root ranging from 659 for B. hispida to six,793 for C. argyrosperma. Cucumis metulifer exhibited moderate resistance and supported 323 eggs per gram fresh root. Thus, C. metulifer was the only cucurbit rootstock evaluated in our tests that exhibited resistance to M. incognita. Presently, we are evaluating all of the C. metulifer PIs inside the USDA Plant Introduction collection so as to identify probably the most resistant and vigorous accessions for use in establishing RKN-resistant rootstocks for melon. USE OF PROPAGATED PLANT CUTTINGS TO ACCELERATE SCREENING CAYENNE PEPPER FOR RESISTANCE TO MELOIDOGYNE INCOGNITA. Thomas, Stephen1, J.M. Beacham1, and P.W. Bosland2. 1Department of Entomology, Plant Pathology and Weed Science, P.O. Box 30003 MSC 3BE; and 2 Department of Plant and Environmental Sciences, P.O. Box 30003, MSC 3Q, New Mexico State University, Las Cruces, NM 88003. Employing sodium hypochlorite to assess egg production per unit of root weight in young plants may be the most sensitive, rapid, and quantitative approach for screening breeding lines for resistance to southern root-knot nematode (Meloidogyne incognita). Nevertheless, a limitation to this approach is that it destroys these incredibly plants identified as desirable for additional investigation. In 2009, a greenhouse study was performed to assess and boost resistance to M. incognita in 3 NMSU cayenne chile (Capsicum annuum) cultivars, `NuMex Nematador' (96 plants) and two accessions of `NuMex Las Cruces' (79 78 plants each). Individual plants from each cultivar and from the normal resistant handle `Carolina Cayenne' have been inoculated with 2,500 M. incognita eggs per plant and evaluated 42 days later. Prior to bleach extraction of roots, cuttings were propagated from every plant. No eggs (zero nematode reproduction) were recovered from two of 96 Nematador plants, and 1-5 eggs were recovered from four of 157 `NuMex Las Cruces' plants. Seeds from the two Nematador plants have been collected separately and 24 progeny of each have been tested in an added greenhouse study in 2010, where some M. incognita reproduction was observed.