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QTL Mapping for Protein Content Derived from a Cross between oryza sativa and Weedy Rice

  • Ju-Won Kang;Ji-Yoon Lee;Gi-Un Seong;Youngho Kwon;So-Myeong Lee;Dong Jin Shin;Sais-Beul Lee;Hyunnggon Mang;Dong Soo Park;Jong-Hee Lee;Jun-Hyeon Cho;Gi-Won Oh
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2022년도 추계학술대회
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    • pp.268-268
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    • 2022

  • Protein is a major nutrient of food and has long been studied for nutritional and utility value. Among them, rice protein is attracting attention because of its hypoallergenic characteristics and nutritional value. Mutant DM225 with increased protein content was selected by EMS treatment on the weed rice Dharial. QTL analysis of Protein content was carried out using BC2F2 populations derived from a cross between "Hanareum2" as a recurrent parent and "DM225" as a donor parent. The protein content of populations was between 5~11%, with an average of 7.7%. To identify QTLs related to Protein content, 117 KASP markers(polymorphic ratio: 15%) showing polymorphisms between the parents were genotyped for the BC2F2 population. One QTL was detected between markers SK07 06 and SK07_10 on chromosome 7(LOD: 28.1). This QTL explained 71.4% of the phenotypic variance for Protein content. This QTL will be useful for protein-related rice breeding program.

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Identification of New Isolates of Phytophthora sojae and Selection of Resistant Soybean Genotypes

  • Su Vin Heo;Hye Rang Park;Yun Woo Jang;Jihee Park;Beom Kyu Kang;Jeong Hyun Seo;Jun Hoi Kim;Ji Yoon Lee;Man Soo Choi;Jee Yeon Ko;Choon Song Kim;Sungwoo Lee;Tae-Hwan Jun
    • The Plant Pathology Journal
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    • 제40권3호
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    • pp.329-335
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    • 2024

  • Phytophthora root and stem rot (PRR), caused by Phytophthora sojae, can occur at any growth stage under poorly drained and humid conditions. The expansion of soybean cultivation in South Korean paddy fields has increased the frequency of PRR outbreaks. This study aimed to identify four P. sojae isolates newly collected from domestic fields and evaluate race-specific resistance using the hypocotyl inoculation technique. The four isolates exhibited various pathotypes, with GJ3053 exhibiting the highest virulence complexity. Two isolates, GJ3053 and AD3617, were screened from 205 soybeans, and 182 and 190 genotypes (88.8 and 92.7%, respectively) were susceptible to each isolate. Among these accessions, five genotypes resistant to both isolates were selected. These promising genotypes are candidates for the development of resistant soybean cultivars that can effectively control PRR through gene stacking.

  • https://doi.org/10.5423/PPJ.NT.12.2023.0181 인용 PDF