Identification of Cold-Tolerant Breeding Lines by Quantitative Trait Loci Associated with Cold   Tolerance in Rice
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Low temperature or cold stress is one of the major abiotic stresses limiting rice (Oryza sativa L.) production and productivity in the temperate rice growing regions as well as in tropical high lands worldwide. Low temperature at the reproductive stage causes high sterility and decreases production. In this study, we assessed recombinant inbred lines (RILs) that possessed cold-tolerance genes and/or quantitative trait loci (QTL) from the donor line IR66160-121-4-4-2 in the genetic background of a cold-sensitive japonica cultivar, Geumobyeo. The selected 15 RILs with QTL for cold tolerance were phenotyped for three main agronomic traits-culm length (CL), days to heading (DTH), and spikelet fertility (SF)-which were most affected during cold stress. The RILs with cold-tolerant and cold-sensitive parents were evaluated under cold-water (18' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["QTL"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Low temperature or cold stress is one of the major abiotic stresses limiting rice (Oryza sativa L.) production and productivity in the temperate rice growing regions as well as in tropical high lands worldwide. Low temperature at the reproductive stage causes high sterility and decreases production. In this study, we assessed recombinant inbred lines (RILs) that possessed cold-tolerance genes and/or quantitative trait loci (QTL) from the donor line IR66160-121-4-4-2 in the genetic background of a cold-sensitive japonica cultivar, Geumobyeo. The selected 15 RILs with QTL for cold tolerance were phenotyped for three main agronomic traits-culm length (CL), days to heading (DTH), and spikelet fertility (SF)-which were most affected during cold stress. The RILs with cold-tolerant and cold-sensitive parents were evaluated under cold-water (18' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Low temperature or cold stress is one of the major abiotic stresses limiting rice (Oryza sativa L.) production and productivity in the temperate rice growing regions as well as in tropical high lands worldwide. Low temperature at the reproductive stage causes high sterility and decreases production. In this study, we assessed recombinant inbred lines (RILs) that possessed cold-tolerance genes and/or quantitative trait loci (QTL) from the donor line IR66160-121-4-4-2 in the genetic background of a cold-sensitive japonica cultivar, Geumobyeo. The selected 15 RILs with QTL for cold tolerance were phenotyped for three main agronomic traits-culm length (CL), days to heading (DTH), and spikelet fertility (SF)-which were most affected during cold stress. The RILs with cold-tolerant and cold-sensitive parents were evaluated under cold-water (18
QTL