Genetic Studies of Crop Breeding

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Plant Genetics and Genomics".

Deadline for manuscript submissions: 25 July 2024 | Viewed by 1302

Special Issue Editor


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Guest Editor
College of Life Science, Linyi University, Linyi, China
Interests: plant sciences; crop genetic improvement; crop yield potential; climate change and crop production; crop physiology

Special Issue Information

Dear Colleagues,

Food security is confronted by great threats from crop yield stagnation; growing demand for high quality crops; and global climate change in the form of frequent extreme weather events, increasing occurrence of various pests and diseases, and shortage of water and other resources. The benefits of genetic studies of crop breeding globally are thought to be imperative for realizing high-yielding crop production. Breeding practices for modern crops are critical in facing these challenges, and a deep understanding of these practices is crucial to uncover how to identify genetic improvements for productive crops. This Special Issue explores the basic mechanism of the breeding of high yield and high-quality crops. It is expected that development and integration of new technology into established breeding schemes will contribute significantly to crop genetic improvements, for instance, with the breeding of varieties with better quality and improved disease resistance, improving yield potential, and enhancing resistance or tolerance to biotic stress such as drought and heat. This Special Issue gives priority to articles that are of direct relevance to plant breeders, inviting original research, technology reports, opinion articles, perspectives, reviews, and mini reviews. This publication also welcomes studies on cereals, beans, potatoes, fiber, oilseeds, sugar, seasoning, medicinal, green manure, and aromatic crops.

Prof. Dr. Depeng Wang
Guest Editor

Manuscript Submission Information

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Keywords

  • agronomy
  • plant protection
  • biological sciences
  • plant breeding
  • genetics
  • molecular biology
  • biotechnology
  • plant pathology
  • plant biochemistry

Published Papers (1 paper)

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Research

19 pages, 6055 KiB  
Article
Genome-Wide Association Study Reveals the Genetic Basis of Total Flavonoid Content in Brown Rice
by Haijian Xia, Xiaoying Pu, Xiaoyang Zhu, Xiaomeng Yang, Haifeng Guo, Henan Diao, Quan Zhang, Yulong Wang, Xingming Sun, Hongliang Zhang, Zhanying Zhang, Yawen Zeng and Zichao Li
Genes 2023, 14(9), 1684; https://doi.org/10.3390/genes14091684 - 25 Aug 2023
Viewed by 932
Abstract
Flavonoids have anti-inflammatory, antioxidative, and anticarcinogenic effects. Breeding rice varieties rich in flavonoids can prevent chronic diseases such as cancer and cardio-cerebrovascular diseases. However, most of the genes reported are known to regulate flavonoid content in leaves or seedlings. To further elucidate the [...] Read more.
Flavonoids have anti-inflammatory, antioxidative, and anticarcinogenic effects. Breeding rice varieties rich in flavonoids can prevent chronic diseases such as cancer and cardio-cerebrovascular diseases. However, most of the genes reported are known to regulate flavonoid content in leaves or seedlings. To further elucidate the genetic basis of flavonoid content in rice grains and identify germplasm rich in flavonoids in grains, a set of rice core collections containing 633 accessions from 32 countries was used to determine total flavonoid content (TFC) in brown rice. We identified ten excellent germplasms with TFC exceeding 300 mg/100 g. Using a compressed mixed linear model, a total of 53 quantitative trait loci (QTLs) were detected through a genome-wide association study (GWAS). By combining linkage disequilibrium (LD) analysis, location of significant single nucleotide polymorphisms (SNPs), gene expression, and haplotype analysis, eight candidate genes were identified from two important QTLs (qTFC1-6 and qTFC9-7), among which LOC_Os01g59440 and LOC_Os09g24260 are the most likely candidate genes. We also analyzed the geographic distribution and breeding utilization of favorable haplotypes of the two genes. Our findings provide insights into the genetic basis of TFC in brown rice and could facilitate the breeding of flavonoid-rich varieties, which may be a prevention and adjuvant treatment for cancer and cardio-cerebrovascular diseases. Full article
(This article belongs to the Special Issue Genetic Studies of Crop Breeding)
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