Broomrape weeds (Orobanche spp.) are root holoparasitic plants that cause serious damage to a range of legume crops in the Mediterranean and sub‐Saharan African regions. Grain yield of cultivated species of grass pea (Lathyrus sativus L.) is almost negligible at the highest infection severity of Orobanche. Crop wild relatives (CWRs) have emerged as a novel source for many traits in diverse crops. Lathyrus is one of the largest genera with more than 160 species. In the present study, we screened 285 accessions representing 13 Lathyrus species for their reactions against two common broomrape species, Orobanche crenata Forsk. and O. foetida Poir, under field conditions. Screening at hot spots in Morocco and Tunisia resulted in the identification of resistant accessions of wild Lathyrus species against the parasitic weed. The level of resistance to O. foetida was higher among wild species compared with O. crenata. Field results showed complete resistance for O. crenata and O. foetida by L. articulatus L. and moderate resistance by L. aphaca L. and L. ochrus (L.) DC. Resistance to O. crenata in L. sativus accessions was validated in a pot experiment under controlled conditions. Two accessions—namely, IG64782 and IG65197—showed complete resistance to O. crenata. A moderately resistant accession, IG116989, that revealed low infestation in the field showed high susceptibility in pot experiment. The results indicated that the resistance against O. crenata and O. foetida was associated with slow development of the established tubercles and low induction of parasite germination.

中文翻译：

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野生山thy豆物种是抵御扫帚杂草（Orobanche crenata Forsk。和Orobanche foetida Poir。）进入栽培豌豆（Lathyrus sativus L.）的重要抗性来源。

room帚杂草（Orobanche spp。）是根类全寄生植物，会对地中海和撒哈拉以南非洲地区的一系列豆类作物造成严重破坏。在最高的Orobanche感染严重程度下，豌豆栽培种（Lathyrus sativus L.）的谷物产量几乎可以忽略不计。作物野生近缘种（CWR）已成为多种作物许多性状的新颖来源。山thy豆属是最大的属之一，有160多种。在本研究中，我们筛选了代表13个山thy豆属物种的285个种质，它们对两种常见的b帚物种Orobanche crenata Forsk的反应。和O. foetida在野外条件下会发ir。在摩洛哥和突尼斯的热点地区进行筛选，结果确定了野生山thy豆属物种对寄生杂草的抗性种质。野生物种对foetida的抗性水平高于樱桃栎。字段结果显示为完全的抗性O.籽和O.蚓通过L. articulatus L.和中度抗性L. aphaca L.和L. ochrus（L.）DC。耐O.籽中L.红花在盆栽实验中在受控条件下验证了这些种质。两个国家加入，即IG64782和IG65197，显示出完整的阻力O.籽。表现出田间低度侵染的中等抗性种质IG116989在盆栽试验中表现出很高的敏感性。结果表明，对小叶蝉和拟南芥的抗性与已建立的结核的缓慢发育和寄生虫萌发的诱导率低有关。