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Identification of Quantitative Trait Loci for Spikelet Fertility at the Booting Stage in Rice (Oryza sativa L.) under Different Low-Temperature Conditions
| Content Provider | MDPI |
|---|---|
| Author | Jeong, Jong-Min Mo, Youngjun Hyun, Ung-Jo Jeung, Ji-Ung |
| Copyright Year | 2020 |
| Description | Cold stress in rice is a critical factor limiting growth and yield in temperate regions. In this study, we identified quantitative trait loci (QTL) conferring cold tolerance during the booting stage using a recombinant inbred line population derived from a cross between a cold-susceptible Tongil-type cultivar Milyang23 and a cold-tolerant japonica cultivar Giho. A phenotypic evaluation was performed in a cold-water-irrigated field (17 °C) and a temperature-controlled (17 °C/17 °C air and water) greenhouse at the booting stage. Four QTL, including two on chromosome 1 and one each on chromosomes 6 and 9, were identified in the cold-water-irrigated field, with an R2 range of 6.3%–10.6%. Three QTL, one on each of chromosomes 2, 6 and 9, were identified under the temperature-controlled greenhouse condition, with an R2 range of 5.7%–15.1%. Among these, two QTL pairs on chromosomes 6 (qSFF6 and qSFG6) and 9 (qSFF9 and qSFG9) were detected in the cold treatments of both field and greenhouse screenings. Our results provide a reliable dual-screening strategy for rice cold tolerance at the booting stage. |
| Starting Page | 1225 |
| e-ISSN | 20734395 |
| DOI | 10.3390/agronomy10091225 |
| Journal | Agronomy |
| Issue Number | 9 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-08-19 |
| Access Restriction | Open |
| Subject Keyword | Agronomy Rice Recombinant Inbred Line Cold Tolerance Booting Stage Qtl |
| Content Type | Text |
| Resource Type | Article |
