Genetic Variation in Tolerance to Iron Deficiency among Species of Oryza

Transplanted rice cultivation has caused groundwater depletion in several regions globally. Direct-seeded under aerobic conditions is a water-saving alternative. However, conditions, iron the soil oxidized from ferrous to ferric forms, which are not easily available crops, resulting iron-deficiency-induced chlorosis (IDIC) and causing significant reductions yield. Cultivated accessions have limited variations IDIC tolerance, while wild Oryza germplasm could be potential source of tolerance. In this study, 313 were evaluated for tolerance at tillering stage 20 IDIC-tolerant lines identified. The twenty showed no signs had high levels content SPAD values, eight cultivated controls exhibited varying degrees symptoms low content. To confirm their selected again subsequent year, they comparable indicating that these efficient uptake utilization, maintained chlorophyll leaf area index. These may useful developing cultivars future studies molecular basis