Soler Salvador, Díez M José, Nuez Fernando
Departamento de Biotecnología, Universidad Politécnica de Valencia, Valencia 46022, Spain.
Plant Dis. 1998 Nov;82(11):1199-1204. doi: 10.1094/PDIS.1998.82.11.1199.
We studied the resistance to tomato spotted wilt virus in plant introduction accession (PI)-151225 and PI-159236 under Mediterranean climatic conditions. Two temperature regimes were utilized, corresponding to early and late cultivation cycles. Inoculations were made at 2- and 4-leaf stages to determine the effect of early infection. The existence of interaction between temperature regime and developmental stage was also studied. When plants of both PIs were maintained at 30/18°C (day/night), all plants at both growth stages when inoculated developed systemic infection. At 25/18°C, only those plants inoculated at 2-leaf stage became systematically infected; however, those inoculated at the 4-leaf stage behaved as resistant. Thus, there was an interaction between temperature regime and growth stage. There is potential for using this type of resistance in areas with mild climates, providing seedling infections are avoided.
我们研究了植物引进种质（PI）-151225和PI-159236在地中海气候条件下对番茄斑萎病毒的抗性。采用了两种温度模式，分别对应早期和晚期栽培周期。在2叶期和4叶期进行接种，以确定早期感染的影响。还研究了温度模式与发育阶段之间相互作用的存在情况。当两个PI的植株都维持在30/18°C（昼/夜）时，接种的两个生长阶段的所有植株都发生了系统感染。在25/18°C时，只有在2叶期接种的植株发生了系统感染；然而，在4叶期接种的植株表现出抗性。因此，温度模式与生长阶段之间存在相互作用。在气候温和的地区，如果能避免幼苗感染，利用这种抗性具有潜力。
