Timper P, Hanna W W
J Nematol. 2005 Jun;37(2):214-9.
Pearl millet (Pennisetum glaucum) has potential as a grain crop for dryland crop production in the southeastern United States. Whether or not pearl millet will be compatible in rotation with cotton (Gossypium hirsutum), corn (Zea mays), and peanut (Arachis hypogaea) will depend, in part, on its host status for important plant-parasitic nematodes of these crops. The pearl millet hybrid 'TifGrain 102' is resistant to both Meloidogyne incognita race 3 and M. arenaria race 1; however, its host status for other plant-parasitic nematodes was unknown. In this study, the reproduction of Belonolaimus longicaudatus, Paratrichodorus minor, Pratylenchus brachyurus, and Meloidogyne javanica race 3 on pearl millet ('HGM-100' and TifGrain 102) was compared relative to cotton, corn, and peanut. Separate greenhouse experiments were conducted for each nematode species. Reproduction of B. longicaudatus was lower on peanut and the two millet hybrids than on cotton and corn. Reproduction of P. minor was lower on peanut and TifGrain 102 than on cotton, corn, and HGM-100. Reproduction of P. brachyurus was lower on both millet hybrids than on cotton, corn, and peanut. Reproduction of M. javanica race 3 was greater on peanut than on the two millet hybrids and corn. Cotton was a nonhost. TifGrain 102 was more resistant than HGM-100 to reproduction of B. longicaudatus, P. minor, and M. javanica. Our results demonstrated that TifGrain 102 was a poor host for B. longicaudatus and P. brachyurus (Rf < 1) and, relative to other crops tested, was less likely to increase densities of P. minor and M. javanica.
珍珠粟（黍稷）有潜力成为美国东南部旱地作物生产中的一种谷类作物。珍珠粟能否与棉花（陆地棉）、玉米（玉米）和花生（落花生）轮作，部分取决于其对这些作物重要植物寄生线虫的寄主状况。珍珠粟杂交种“TifGrain 102”对南方根结线虫3号小种和花生根结线虫1号小种均具有抗性；然而，其对其他植物寄生线虫的寄主状况尚不清楚。在本研究中，将长针线虫、短体针线虫、短尾短体线虫和爪哇根结线虫3号小种在珍珠粟（“HGM - 100”和TifGrain 102）上的繁殖情况与棉花、玉米和花生进行了比较。针对每种线虫分别进行了温室试验。长针线虫在花生和两个珍珠粟杂交种上的繁殖率低于棉花和玉米。短体针线虫在花生和TifGrain 102上的繁殖率低于棉花、玉米和HGM - 100。短尾短体线虫在两个珍珠粟杂交种上的繁殖率低于棉花、玉米和花生。爪哇根结线虫3号小种在花生上的繁殖率高于两个珍珠粟杂交种和玉米。棉花是一种非寄主植物。TifGrain 102比HGM - 100对长针线虫、短体针线虫和爪哇根结线虫的繁殖更具抗性。我们的结果表明，TifGrain 102是长针线虫和短尾短体线虫的不良寄主（繁殖系数<1），并且相对于其他测试作物，它不太可能增加短体针线虫和爪哇根结线虫的密度。
