Rondon Silvia I, Hane Danny C, Brown Charles R, Vales M Isabel, Dŏgramaci Mahmut
Oregon State University, Hermiston Agricultural Research and Extension Center, Hermiston, OR 97838, USA.
J Econ Entomol. 2009 Aug;102(4):1649-53. doi: 10.1603/029.102.0432.
The evaluation of potato germplasm for resistance to potato tuberworm, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae), is a valuable component of integrated pest management; however, few attempts have been made to identify natural genetic tuber resistance to tuberworm on potato germplasm. The objective of this study was to screen potato germplasm with potential tuberworm resistance for tuber resistance under field and laboratory conditions. Experiments were conducted over a 2-yr period at the Hermiston Agricultural Research and Extension Center, Hermiston, OR. Of 125 germplasm that were tested in 2006, q13 were selected for further screening in 2007. These germplasm were: A0008-1TE, A97066LB, NY123, PA00N10-5, PA99N2, PA99N82, Paciencia, Q174-2, Russet Burbank, Rubi, Ranger Russet, Spunta G2, and T88-4. Tuber resistance of potato germplasm was determined based on the number of mines per tuber and the number of live larvae. Tubers of transgenic clone Spunta G2 were resistant to tuberworm damage. All other germplasm tested in this study, including Russet Burbank and Ranger Russet, were susceptible to tuberworm in the field and laboratory experiments. Incorporation of host plant resistance to tuber penetration by larvae together with appropriate cultural practices including limiting exposure time of tubers in the field may provide the best management option in the future.
对马铃薯种质资源进行抗马铃薯块茎蛾[Phthorimaea operculella (Zeller)，鳞翅目：麦蛾科]评价是害虫综合治理的一项重要内容；然而，在马铃薯种质资源中，针对块茎蛾的天然遗传块茎抗性鉴定工作开展得较少。本研究的目的是在田间和实验室条件下，筛选具有潜在块茎蛾抗性的马铃薯种质资源的块茎抗性。试验在俄勒冈州赫米斯顿市的赫米斯顿农业研究与推广中心进行，为期两年。2006年对125份种质资源进行了测试，2007年从中挑选了13份进行进一步筛选。这些种质资源分别是：A0008 - 1TE、A97066LB、NY123、PA00N10 - 5、PA99N2、PA99N82、帕西恩西亚、Q174 - 2、褐皮伯班克、鲁比、兰杰褐皮、斯蓬塔G2和T88 - 4。根据每个块茎上的蛀道数量和存活幼虫数量来确定马铃薯种质资源的块茎抗性。转基因克隆品系斯蓬塔G2的块茎对块茎蛾损害具有抗性。在本研究中测试的所有其他种质资源，包括褐皮伯班克和兰杰褐皮，在田间和实验室试验中均对块茎蛾敏感。将寄主植物对幼虫块茎穿透的抗性与适当的栽培措施（包括限制块茎在田间的暴露时间）相结合，可能是未来最佳的治理选择。
