Publications by authors named "Chenggen Qiang"
Phenological and morphological variation are widely viewed as a pivotal driver of ecological adaptation and speciation. Here, we investigate variation patterns of flowering phenology and morphological traits within and between O. rufipogon and O.
View Article and Find Full Text PDFRice is one of the most important staple crops in the world; therefore, the improvement of rice holds great significance for enhancing agricultural production and addressing food security challenges. Although there have been numerous studies on the role of single-nucleotide polymorphisms (SNPs) in rice improvement with the development of next-generation sequencing technologies, research on the role of presence/absence variations (PAVs) in the improvement of rice is limited. In particular, there is a scarcity of studies exploring the traits and genes that may be affected by PAVs in rice.
View Article and Find Full Text PDFArticle Synopsis
- - The study investigates ecological speciation using two wild rice species, Oryza rufipogon and Oryza nivara, focusing on how habitat differences contribute to their phenotypic divergence and genetic structure.
- - Researchers created a detailed genetic map and identified 113 quantitative trait loci (QTLs) linked to 16 traits, with a mix of major and minor gene effects contributing to the observed differences.
- - Results suggest that natural selection drives rapid diversification by influencing multiple traits simultaneously, which could inform better breeding strategies for rice.
Article Synopsis
- - The origin of domesticated Asian rice has been debated for over 50 years, focusing on whether it was domesticated once in China or multiple times in different locations.
- - Researchers analyzed 1,578 genomes and discovered 993 selected genes, indicating that japonica and indica rice types are closely related and likely share a single domestication origin.
- - Most domestication alleles (around 80%) came from wild rice in China, while about 20% originated from wild rice in South and Southeast Asia, supporting the idea of separate domestication events.
Higher chlorophyll content (CC) and strong stay-green (SG) traits are conducive for improvement of photosynthetic efficiency in plants. Exploration of natural elite alleles for CC and SG, and highly resolved gene haplotypes are beneficial to rational design of breeding for high-photosynthetic efficiency. Phenotypic analysis of 368 rice accessions showed no significant correlation between CC and SG, and higher CC and stronger SG in japonica than in indica.
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