SNP based panel for mediterranean wheat plant selection and breeding

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基于SNP的地中海小麦选育

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来源：

PatSnap

全文链接：

//agri.nais.net.cn/topic/downloadFile/f4dade2f-09c3-4882-a8b1-593d1d2d65d0

来源地址：

https://analytics.zhihuiya.com/patent-view/abst?_type=query&source_type=search_result&rows=100&patentId=7874549f-01a6-4186-9fcd-512c2010532e&sort=sdesc&page=2&q=wheat%20breeding

资源所属：

小麦遗传育种专题

类型：

相关专利

语种：

英语

原文发布日期：

2023-01-04

摘要：

However, the complexity of the wheat genome presents some challenges for applying new technologies in molecular marker identification generating large numbers of molecular markers (SNPs) for use in genetic analyses such as genomics-assisted breeding in a range of plant species.Genomic selection models have already proven to be advantageous but they are still quite laborious requiring the access to high throughput genotyping platforms and well trained and experienced personnel on bioinformatics and biostatistics to conduct prediction based on mathematical models.According to recent data, despite the increasing wheat plantings in 2021 in the United States of America and Canada, adverse climatic conditions decreased yield prospects for the main winter wheat crop and consequently wheat production is expected to be below average.Although in European Union the expansion of winter wheat planting is expected to lead to higher production yields, wheat production in the Southern Mediterranean countries is mostly dependent on weather conditions and water availability, being especially fragile under very high spring temperatures and long periods of land drought.Grain yield (GY) improvement is one of the most challenging objectives in wheat breeding due to the complex genetic architecture and low heritability.Wheat production in the Southern European region is facing problems of long periods of groundwater decreasing, limiting irrigation frequency and causing the abandonment of wheat crop production by farmers.Although conventional breeding attempts to increase grain yield potential, advances are relatively slow as GY is a complex trait, strongly associated with spike number per unit area, kernel number per spike and thousand-kernel weight (TKW).In Mediterranean-climate regions, temperate cereals like wheat are usually exposed to a severe water deficit during the grain filling period.This water deficit leads to reductions in canopy photosynthesis and lower levels of assimilate transfer to the grain, leading to low kernel weights and GY.