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<p>Grass pea (<i>L. sativus</i>), is a legume crop, primarily used for animal feed shows promise for the future due to its ability to adapt to climate change scenarios. Yellow and wilt disease caused by <i>Fusarium</i> spp. is one of the most significant diseases threatening the sustainable productivity of the crop globally. In May 2018, grass pea fields in the west and northwest of Iran were visited for yellow syndrome, and ten isolates were collected from each field. Representative isolates were selected based on colony characteristics, and through morphological and molecular techniques, the isolates were identified as <i>Fusarium curvatum</i>. These isolates were used to screen thirty advanced grass pea genotypes from the national grass pea breeding program in both glasshouse and semi-field conditions. The results showed that the interaction between isolates and genotypes was highly significant, indicating existing pathogenic differentiation, which can be interpreted as the existence of races in this pathosystem. Ten genotypes that showed resistance to both isolates of GP-1 and GP-7 in the glasshouse conditions were selected for the second round of screening in semi-field conditions. Based on mortality rate and infection type, five genotypes (accessions 6, 15, 21, 25, and 38) were identified as resistant and suitable for release as new varieties or to use in breeding programs as resistant sources.</p>

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Exploring host plant resistance in Lathyrus sativus to yellow and wilt disease caused by Fusarium curvatum in Iran

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Hamid Reza Pouralibaba,
  • Masoud Abrinbana,
  • Mozhgan Tabrizivand Taheri

摘要

Grass pea (L. sativus), is a legume crop, primarily used for animal feed shows promise for the future due to its ability to adapt to climate change scenarios. Yellow and wilt disease caused by Fusarium spp. is one of the most significant diseases threatening the sustainable productivity of the crop globally. In May 2018, grass pea fields in the west and northwest of Iran were visited for yellow syndrome, and ten isolates were collected from each field. Representative isolates were selected based on colony characteristics, and through morphological and molecular techniques, the isolates were identified as Fusarium curvatum. These isolates were used to screen thirty advanced grass pea genotypes from the national grass pea breeding program in both glasshouse and semi-field conditions. The results showed that the interaction between isolates and genotypes was highly significant, indicating existing pathogenic differentiation, which can be interpreted as the existence of races in this pathosystem. Ten genotypes that showed resistance to both isolates of GP-1 and GP-7 in the glasshouse conditions were selected for the second round of screening in semi-field conditions. Based on mortality rate and infection type, five genotypes (accessions 6, 15, 21, 25, and 38) were identified as resistant and suitable for release as new varieties or to use in breeding programs as resistant sources.