González-Verdejo Clara Isabel, Fernández-Aparicio Mónica, Córdoba Eva María, López-Ráez Juan Antonio, Nadal Salvador
IFAPA Centro Alameda del Obispo, Área de Genómica y Biotecnología, Apdo. 3092, 14080 Córdoba, Spain.
Instituto de Agricultura Sostenible-CSIC, Avda. Menéndez Pidal s/n, 14004 Córdoba, Spain.
Plants (Basel). 2021 Feb 12;10(2):348. doi: 10.3390/plants10020348.
Bitter vetch ( (L.) Willd.) is a legume well adapted to cultivation in marginal areas, being an important source of protein for animal feed in low input cropping systems. Surprisingly, it is an underutilized crop as it could be a good alternative to increase the sustainability of extensive rainfed cropping systems. In Mediterranean rainfed cropping systems, the productivity of bitter vetch is severely reduced by the parasitic weed species (Forsk). To date, few resistant bitter vetch genotypes have been identified. infection process initiates with the recognition of germination factors exuded by roots of susceptible hosts. In this work, the interaction of a collection of bitter vetch accessions and has been analyzed in order to discover accessions with low germination induction activity. Through a combination of field and rhizotron experiments, two bitter vetch accessions were selected showing low germination-induction activity, which resulted in less infection. In addition, in vitro germination assays revealed that the low germination activity was due to low exudation of germination factors and not due to the exudation of germination inhibitors. The selected low germination-inducers genotypes could be the basis for a new breeding program generating locally adapted alternatives with resistance to .
苦巢菜（(L.) Willd.）是一种非常适合在边缘地区种植的豆科植物，是低投入种植系统中动物饲料蛋白质的重要来源。令人惊讶的是，它是一种未得到充分利用的作物，因为它可能是提高粗放雨养种植系统可持续性的一个很好的替代选择。在地中海雨养种植系统中，苦巢菜的生产力会因寄生杂草物种（Forsk）而严重降低。到目前为止，已鉴定出的抗苦巢菜基因型很少。感染过程始于识别易感宿主根系分泌的萌发因子。在这项工作中，分析了一系列苦巢菜种质与该寄生杂草的相互作用，以发现萌发诱导活性低的种质。通过田间试验和根箱试验相结合，选择了两个萌发诱导活性低的苦巢菜种质，其感染较少。此外，体外萌发试验表明，低萌发活性是由于萌发因子分泌少，而不是由于萌发抑制剂的分泌。所选的低萌发诱导基因型可能是一个新育种计划的基础，该计划将培育出对该寄生杂草具有抗性的本地适应性替代品种。
