| Autor: |
Rembang, Janne Herly Willy, Rosdianti, Ida, Maruapey, Ajang, Afandi, Auliana, Utami, Dwinita Wikan |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 2957 Issue 1, p1-8, 8p |
| Abstrakt: |
The agricultural development in suboptimal specific locations such as in swampy areas become an alternative to increase national rice production. Variability in plant populations is a result of their ability to adapt to environmental and climate changes. However, the use of swampland for agricultural purposes is often hampered by nutrient stress in soils, one of them is iron toxicity which could affect the entire plant growth both during the early and late stages. Rice is one of the plants that are susceptible to iron toxicity. The iron tolerance mechanisms in the plant are through partitioning the excessive Fe uptake contributed partly by OsIRT (Oryza sativa Iron Regulated Transporter) genes. This research aimed to identify the genotype variation of promising rice lines using the OsIRT gene markers. The 15 selected rice lines and two control varieties with distinct Fe tolerance responses were used in this study. Field experiments were conducted in two inland locations (lebak swampy type) both high in Fe2+ in soil solutions at Lampung and Papua. The lines tested showed recovery along the vegetative and generative stages. It showed that they could reduce the toxic effect of Fe absorbed. The root of tolerant and intolerant lines was not significantly different. Therefore, the iron tolerance might not be supported by the uptake mechanism in the roots. The OsIRT genotype performance showed the polymorphism between the tolerance and intolerance lines. So, the contribution of OsIRT alleles might be related to the partitioning mechanism. The results of this study became the basis for plant breeding related to the biofortification of Fe in seasonal horticultural commodities. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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