The quantitative trait loci (QTLs) for low-temperature vigor of germination (LVG) with a germination period of 7 d, 11 d, 14 d, and 17 d at 14 degrees C was identified using F(2:3) population, which included 200 individuals and lines derived from a cross of indica and japonica "Milyang 23/Jileng 1" with microsatellite markers. The correlation coefficient between LVG and other cold tolerance traits was analyzed. LVG and the cold response index for vigor of germination (CIVG) detected when the germination period was 7 d showed a continuous distribution, which was partial to lower LVG and lower CIVG in F(3) lines. LVG and CIVG detected when the germination periods were 11 d, 14 d, and 17 d showed a continuous distribution near normal, which were quantitative traits controlled by multiple genes. LVG detected when the germination period was 14 d was more correlated with other cold tolerance traits than LVG detected when the germination periods were 7 d, 11 d, and 17 d, which was significantly associated with cold tolerance during the bud bursting period, the seedling stage, the booting stage, and the growing ability under cold conditions. qLVG2 located in RM29-RM262 on chromosome 2, qLVG7-2 and qCIVG7-2 located in RM336-RM118 on chromosome 7 were detected when the germination periods were 11 d, 14 d, and 17 d. qCIVG2 located in RM29-RM262 on chromosome 2 was detected when the germination periods were 11 d and 14 d. The variation is due to the observed phenotypic variation by the above QTLs, which was increased following the germination. The variation of qLVG2 related to LVG was increased from 6.9% to 14.2%. The variation of qLVG7-2 associated with LVG was increased from 9.9% to 11.2%. The variation of qCIVG2 correlated with CIVG was increased from 6.3% to 9.0%. The variation of qCIVG7-2 associated with CIVG was increased from 8.3% to 12.9%. These QTL alleles were obtained from the tolerant parent Jileng 1, and the gene action was most likely to be partially dominant.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/S0379-4172(06)60135-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Phytotoxic Activity Analysis of 2-Methoxyphenol and 2,6-Di--butyl-4-methylphenol Present in L. Essential Oil.
Plants (Basel)
December 2024
Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, Spain.
The evaluation of the wide variety of allelochemicals present in allelopathic plants allows the detection of safer bioherbicides with new mechanisms of action. This study tested two phenolic compounds of essential oil (2-Methoxyphenol and 2,6-Di--butyl-4-methylphenol), which are commercially available. At 0.
View Article and Find Full Text PDFRecent progress in proteins regulating the germination of spores.
J Bacteriol
January 2025
College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing of Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory for Food Non-Thermal Processing, China Agricultural University, Beijing, China.
Article Synopsis
- Bacterial spores can stay dormant for years but can germinate when conditions are right, involving complex signal pathways.
- Recent studies have revealed details about proteins crucial for this process, particularly the GerA receptor and SpoVAF/FigP complex, which help with ion release.
- The research also highlights how spore quality impacts germination, focusing on proteins involved in sporulation and factors like glutamate breakdown and coat protein assembly, enhancing our understanding of the germination mechanism.
Genome-wide association study (GWAS) uncovers candidate genes linked to the germination performance of bread wheat (Triticum aestivum L.) under salt stress.
BMC Genomics
January 2025
Botany and Mycology Unit, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland.
Background: Improving the germination performance of bread wheat is an important breeding target in many wheat-growing countries where seedlings are often established in soils with high salinity levels. This study sought to characterize the molecular mechanisms underlying germination performance in salt-stressed wheat. To achieve this goal, a genome-wide association study (GWAS) was performed on 292 Iranian bread wheat accessions, including 202 landraces and 90 cultivars.
View Article and Find Full Text PDFShedding new light on the hidden complexity of seeds: chemically selective imaging of seed coats with stimulated Raman scattering microscopy.
Analyst
January 2025
Physics and Astronomy, University of Exeter, Exeter, EX4 4QL, UK.
The seed coat plays a pivotal role in seed development and germination, acting as a protective barrier and mediating interac-tions with the external environment. Traditional histochemical techniques and analytical methods have provided valuable insights into seed coat composition and function. However, these methods often suffer from limitations such as indirect chemical signatures and lack of spatial resolution.
View Article and Find Full Text PDFMachine learning-based prediction of compost maturity and identification of key parameters during manure composting.
Bioresour Technol
December 2024
School of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. Electronic address:
Evaluating compost maturity, e.g. via manual seed germination index (GI) measurement, is both time-consuming and costly during composting.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!