Publications by authors named "Weixia Lei"
Purpose: To explore the mechanisms of tolerance of Brassica napus to ultra-high concentration cadmium pollution and the synergistic effects of biochar (BC) and Arbuscular mycorrhizal fungi (AMF) on plant growth under cadmium (Cd) stress.
Results: The application of 5 % BC and inoculation with 10 g AMF significantly promoted the growth and development of B. napus.
Article Synopsis
- Rapeseed is a key source of plant oil, and silique length (SL) is a critical trait that affects its yield, controlled by multiple genes.
- Researchers mapped twenty-six quantitative trait loci (QTL) for SL across different environments, identifying eight consensus QTL including two major ones that account for significant variability in SL.
- By analyzing candidate genes and gene expression, they identified an ideal QTL combination (A02C06) that produced the longest silique length, which could enhance rapeseed breeding efforts.
Article Synopsis
- Researchers developed a fast transformation system for a new short-cycle rapeseed line, Sef1, which has potential for large-scale gene studies in controlled environments.
- Sef1 is a semi-winter-type Brassica napus with early-flowering and dwarf characteristics, overcoming challenges of long growth cycles and complex genomes associated with previous rapeseed studies.
- The study identified a key mutation in Sef1 that affects flowering time and established an efficient transformation process, yielding up to 20.37% success rate, facilitating quicker functional gene analysis in rapeseed.
Research on the flowering habit of rapeseed is important for the selection of varieties adapted to specific ecological environments. Here, quantitative trait loci (QTL) for the days-to-flowering trait were identified using a doubled haploid population of 178 lines derived from a cross between the winter type SGDH284 and the semi-winter type 158A. A linkage map encompassing 3268.
View Article and Find Full Text PDFThe combination effects of nitrogen (N) fertilizer and planting density on maize yield, N use efficiency and the characteristics of canopy radiation capture and radiation use efficiency are not well documented in the Huanghuaihai Plain region in China. A 2-year field experiment was conducted from 2017 to 2018 in a split plot design with two N levels (240 and 204 kg N ha) applied to main plots and three plant densities (67,500, 77,625 and 87,750 plants ha) allocated to sub plots. Our results show that a 30% greater plant density combined with a 15% lower N rate (basal N) enhanced N partial factor productivity (NPFP) by 24.
View Article and Find Full Text PDFBackground: Cold stress is one of the primary environmental factors that affect plant growth and productivity, especially for crops like Brassica napus that live through cold seasons. Till recently, although a number of genes and pathways involved in B. napus cold response have been revealed by independent studies, a genome-wide identification of the key regulators and the regulatory networks is still lack.
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