Resistance to the potato cyst‐nematode, Heterodera rostochiensis, in the plant genus Lycopersicon
Resistance to the potato cyst‐nematode, Heterodera rostochiensis, in the plant genus Lycopersicon
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番茄属植物对马铃薯胞囊线虫 Heterodera rostochiensis 的抗性
DOI：
10.1111/j.1744-7348.1968.tb04518.x
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发表时间：
1968
影响因子：
2.6
通讯作者：
P. Ellis
中科院分区：
文献类型：
--
作者：
P. Ellis
总结
对48个番茄品系和4个茄属品系进行了对12个已知致病型的罗斯托基胞囊线虫种群的抗性筛选。首先通过检查根球外部的孢囊，然后通过洗涤根球以提取所有孢囊来评估植物品系的抗性。可能的抗性植物选择重新测试对三个线虫种群，包括一个，他们首先表现出耐药性。在两个番茄品系、两个番茄品系和两个番茄品系中发现了抗性。番茄属pimpinellifolium crosses，L.番茄变种cerasiforme、L. peruvianum，L.秘鲁变种humifusum，L.多毛变种glabratum和Solanum indicum。由于抗性在L. peruvianum，并且因为它已经在育种计划中用作抗性亲本以并入对根结线虫（Meloidogyne spp.）番茄L.秘鲁似乎是迄今为止测试的植物中最好的抗性来源。
寄主-寄生关系的研究。多毛变种glabratum（B 6013）与感病番茄L.“艾尔莎·克雷格”用三种线虫分离株接种植物，研究了线虫入侵的程度、植物反应和线虫发育。幼虫侵入和渗透的抗性植物的根一样自由和大量，因为他们渗透的敏感番茄的根。在后者中，大量的幼虫成熟，而相反，很少有幼虫在L。多毛变种光滑的L.多毛变种光滑孢囊线虫（L. glabratum）的根扩散体对罗氏胞囊线虫（Heterodera rostochiensis）幼虫的孵化和L.“艾尔莎·克雷格”
H. rostochiensis，通过它们在抗性番茄品系上增加的不同能力来鉴定，在实验中没有清楚地显示。
SUMMARY
Forty-eight lines of Lycopersicon and four lines of Solanum were screened for resistance to twelve Heterodera rostochiensis populations of known patho-type(s). Plant lines were assessed for resistance first by examining the outside of the root ball for cysts and later by washing the root ball to extract all cysts. Possible resistant plant selections were re-tested against three eelworm populations, including the one to which they were first shown resistant. Resistance was discovered in two lines of Lycopersicon pimpinelli-folium, two L. esculentum L. pimpinellifolium crosses, L. esculentum var. cerasiforme, six lines of L. peruvianum, in L. peruvianum var. humifusum, L. hirsutum var. glabratum, and in Solanum indicum. Because resistance was found most commonly in L. peruvianum and because it has already been used as a resistant parent in breeding programmes to incorporate resistance to root-knot nematode (Meloidogyne spp.) in tomato, L. peruvianum seems to be the best source of resistance among plants tested so far.
The host-parasite relationships of resistant L. hirsutum var. glabratum (B 6013) were compared with those of a commercial, susceptible tomato, L. esculentum‘Ailsa Craig’. Plants were inoculated with three eelworm isolates; the extent of eelworm invasion, plant reaction and eelworm development were studied. Larvae invaded and penetrated roots of the resistant plant as freely and in as large numbers as they penetrated roots of the susceptible tomato. In the latter, numerous larvae matured while, in contrast, few larvae matured in the roots of L. hirsutum var. glabratum. L. hirsutum var. glabratum was shown to possess a root diffusate as active in hatching larvae of Heterodera rostochiensis as that of L. esculentum‘Ailsa Craig’.
The existence of pathotypes of H. rostochiensis, identifiable by their differing abilities to increase on resistant tomato lines, was not clearly revealed in the experiments.