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Good-eating-quality QTLs detected in two breeding populations by genome-wide association mapping increase eating quality of the Japanese rice cultivar 'Koshihikari'. 通过全基因组关联定位,在两个育种群体中检测到良好的食用品质qtl,提高了日本水稻品种“光”的食用品质。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-10-24 DOI: 10.1270/jsbbs.25025
Yoshinobu Takeuchi, Toshio Yamamoto, Jun-Ichi Yonemaru, Yoko Takemoto-Kuno, Shuichi Fukuoka, Makoto Kuroki, Akitoshi Goto, Kazuki Matsubara, Hiroyuki Sato, Hideyuki Hirabayashi, Nobuya Kobayashi, Masayuki Yamaguchi, Takuro Ishii, Ikuo Ando
{"title":"Good-eating-quality QTLs detected in two breeding populations by genome-wide association mapping increase eating quality of the Japanese rice cultivar 'Koshihikari'.","authors":"Yoshinobu Takeuchi, Toshio Yamamoto, Jun-Ichi Yonemaru, Yoko Takemoto-Kuno, Shuichi Fukuoka, Makoto Kuroki, Akitoshi Goto, Kazuki Matsubara, Hiroyuki Sato, Hideyuki Hirabayashi, Nobuya Kobayashi, Masayuki Yamaguchi, Takuro Ishii, Ikuo Ando","doi":"10.1270/jsbbs.25025","DOIUrl":"https://doi.org/10.1270/jsbbs.25025","url":null,"abstract":"<p><p>To identify QTLs controlling the eating quality of 'Akidawara', 'Satojiman', and 'Ikuhikari' rice, we performed a genome-wide association mapping analysis using two breeding populations in 2013 and 2014 derived from crosses between these and another parental line. Through sensory tests by a trained panel, we evaluated five components of the eating quality of cooked rice. Fifty-eight QTLs for these components were detected in breeding lines in 2013 (seven regions of chromosome [chr.] 1, 4, and 11) and 2014 (ten of chr. 1, 2, 4, 8, 9, and 11). The Akidawara, Satojiman, or Ikuhikari alleles at these QTLs increased eating quality. QTLs on the short arm of chr. 4, the middle of the long arm of chr. 4, the distal end of the long arm of chr. 4, and the short arm of chr. 11, were identified in both years. The genetic effects of the Satojiman alleles at QTLs on the distal end of the long arm of chr. 4 and on the short arm of chr. 11 were confirmed by analysis of two chromosome segment substitution lines containing a Satojiman segment in the 'Koshihikari' background in 2016 and 2017, in which the Satojiman alleles increased the level of eating quality of Koshihikari.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"358-368"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low amylose content in rice lowac2 mutant is caused by a new allele of C2H2 zinc-finger protein that regulates pre-mRNA splicing of Wxb. 水稻lowac2突变体直链淀粉含量低是由C2H2锌指蛋白的一个新等位基因引起的,该等位基因调节Wxb的pre-mRNA剪接。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-11-01 DOI: 10.1270/jsbbs.25037
Rina Sakaguchi, Yuko Kozakura, Koume Monma, Naoko Crofts, Hiroyuki Ito, Dong-Jin Kang, Shigeki Hamada
{"title":"Low amylose content in rice <i>lowac2</i> mutant is caused by a new allele of C<sub>2</sub>H<sub>2</sub> zinc-finger protein that regulates pre-mRNA splicing of <i>Wx<sup>b</sup></i>.","authors":"Rina Sakaguchi, Yuko Kozakura, Koume Monma, Naoko Crofts, Hiroyuki Ito, Dong-Jin Kang, Shigeki Hamada","doi":"10.1270/jsbbs.25037","DOIUrl":"https://doi.org/10.1270/jsbbs.25037","url":null,"abstract":"<p><p>The isolated rice mutant, designated <i>lowac2</i>, exhibited low amylose content. Whole-genome resequencing and single-nucleotide polymorphism (SNP) fragment analysis revealed that a mutation in the gene encoding the C<sub>2</sub>H<sub>2</sub> zinc-finger protein in the long-arm terminal of Chromosome 6 was responsible for this low amylose phenotype. An SNP from G to A was observed in the 5' splice junction of intron11, resulting in the production of a protein lacking the C-terminal. Mutation of the C<sub>2</sub>H<sub>2</sub> zinc-finger protein specifically affected the splicing efficiency of intron1 in <i>Waxy<sup>b</sup></i> (<i>Wx<sup>b</sup></i> ). This reduced the levels of granule-bound starch synthase I, which is encoded by <i>Wx<sup>b</sup></i> . Mutations in <i>lowac2</i> increased the mRNA expression levels of several starch biosynthetic enzymes, especially starch synthase IIa and starch branching enzyme I. This was consistent with the presence of amylopectin with reduced short glucan chains in <i>lowac2</i> seeds compared to wild-type seeds. Furthermore, the crossed lines possessing a gene combination between <i>Wx<sup>a</sup></i> from indica variety and <i>lowac2</i> also showed a decrease in amylose content and <i>Wx<sup>a</sup></i> expression; however, this did not affect splicing in <i>Wx<sup>a</sup></i> . The new allele of the C<sub>2</sub>H<sub>2</sub> zinc-finger protein found in this study affects both <i>Wx</i> genes differently.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"421-429"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129570/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co-identification of candidate regions associated with ovule number per ovary through QTL analysis and GWAS in Raphanus sativus L. 利用QTL分析和GWAS联合鉴定萝卜单子房胚珠数相关候选区域。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-11-08 DOI: 10.1270/jsbbs.25016
Jie Ji, Hui-Cong Xue, Xing-Yu Zhu, Hiroto Kobayashi, Ainan Tian, Kenta Shirasawa, Hideki Hirakawa, Nobuko Fukino, Masaya Yamamoto, Hiroyasu Kitashiba
{"title":"Co-identification of candidate regions associated with ovule number per ovary through QTL analysis and GWAS in <i>Raphanus sativus</i> L.","authors":"Jie Ji, Hui-Cong Xue, Xing-Yu Zhu, Hiroto Kobayashi, Ainan Tian, Kenta Shirasawa, Hideki Hirakawa, Nobuko Fukino, Masaya Yamamoto, Hiroyasu Kitashiba","doi":"10.1270/jsbbs.25016","DOIUrl":"https://doi.org/10.1270/jsbbs.25016","url":null,"abstract":"<p><p>Ovule number per ovary (ONPO) directly determines seed quantity in plants. In this study, two radish (<i>Raphanus sativus</i> L.) accessions exhibiting marked phenotypic variation in ONPO and seed number per pod (SNPP) were selected to generate bi-parental populations for quantitative trait locus (QTL) analysis. Additionally, genome-wide association studies (GWAS) on ONPO using 206 radish accessions were conducted. Through an integrated analysis of QTL mapping and GWAS results, a major common QTL was identified spanning a 0.6 Mb region on the terminal of chromosome 5. Based on genomic position, gene ontology, and expression analyses, <i>RsFLK</i> was highlighted as the primary candidate, along with two other selected genes <i>RsSGT</i> and <i>RsEMB3004</i>. Subsequent comparison of the <i>RsFLK</i> promoter sequences in the parental lines revealed unique InDels that may affect its expression, potentially contributing to the high-ONPO. These findings provide new insights into the genetic regulation of ovule number in radishes.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"400-411"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129575/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
QTL mapping of key phenological and morphological traits in grain amaranth (Amaranthus hypochondriacus L.). 粒状苋菜主要物候和形态性状的QTL定位。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-11-14 DOI: 10.1270/jsbbs.25032
Ahmad Zaelani, Sachiko Isobe, Kenta Shirasawa, Yosuke Yoshioka
{"title":"QTL mapping of key phenological and morphological traits in grain amaranth (<i>Amaranthus hypochondriacus</i> L.).","authors":"Ahmad Zaelani, Sachiko Isobe, Kenta Shirasawa, Yosuke Yoshioka","doi":"10.1270/jsbbs.25032","DOIUrl":"https://doi.org/10.1270/jsbbs.25032","url":null,"abstract":"<p><p>Grain amaranth is a promising alternative food grain owing to its nutrient-rich composition and ability to grow under poor environmental conditions. In this study, we aimed to identify quantitative trait loci (QTLs) associated with key morphological and phenological traits using an F<sub>2</sub> population of <i>Amaranthus hypochondriacus</i> derived from two commercial cultivars, Golden and Pygmy Torch. Nine traits were evaluated across three cultivation trials, and single nucleotide polymorphism (SNP) genotyping conducted using double digest restriction site-associated DNA sequencing analysis. Genetic linkage maps were constructed based on SNP markers, and QTL analysis independently conducted for each trial. Three linkage maps were constructed, spanning 5640, 5970.3, and 6960.2 cM, respectively. In total, 12 QTLs were associated with the nine traits detected on Chr. 4, 6, 9, 10, and 16 in at least two cultivations, with QTL regions of the five traits overlapping on Chr. 4. Notably, seven QTLs (<i>AhPH6</i>, <i>AhSTD4</i>, <i>AhNN4</i>, <i>AhBI4</i>, <i>AhHC16</i>, <i>AhIFC16</i>, and <i>AhSCC9</i>) related to important morphological traits were consistently detected in all three cultivation trials. The study results provide valuable genetic insights for the improvement of <i>A. hypochondriacus</i> and suggest the possibility of using molecular markers for the selection of important traits to establish breeding programs more efficiently.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"392-399"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129576/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of an early-heading mutant in Indonesian native rice cultivar: 'Gemdjah Beton-10'. 印度尼西亚本地水稻品种‘吉吉-白顿-10’早抽穗突变体的鉴定。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-11-01 DOI: 10.1270/jsbbs.25024
Asanga D Nagalla, Ryouhei Morita, Hiroyuki Ichida, Yoriko Hayashi, Yuki Shirakawa, Kazuki Ohshiro, Tadashi Sato, Yoshimichi Fukuta, Kinya Toriyama, Hiroki Saito, Yutaka Okumoto, Tomoko Abe
{"title":"Identification of an early-heading mutant in Indonesian native rice cultivar: 'Gemdjah Beton-10'.","authors":"Asanga D Nagalla, Ryouhei Morita, Hiroyuki Ichida, Yoriko Hayashi, Yuki Shirakawa, Kazuki Ohshiro, Tadashi Sato, Yoshimichi Fukuta, Kinya Toriyama, Hiroki Saito, Yutaka Okumoto, Tomoko Abe","doi":"10.1270/jsbbs.25024","DOIUrl":"https://doi.org/10.1270/jsbbs.25024","url":null,"abstract":"<p><p>Rice is one of the world's most widely cultivated field crops and a short-day adapted plant. It possesses a complex genetic regulatory mechanism for heading date determination. Gemdjah Beton (GB) is an Indonesian rice cultivar that takes approximately 17 weeks to flower after being transplanted into a rice field in Japan. We isolated early-heading mutant line GB-10 (flowers around two to three weeks earlier than GB in the field). Under long-day (LD) conditions, GB-10 flowered approximately two weeks earlier than GB. Under short-day conditions, the heading date between GB-10 and GB plants shows no apparent difference. In agreement with the heading date, <i>Hd3a</i> and <i>RFT1</i> expressions show around a 10-time relative transcript quantity difference under LD conditions in GB-10 compared to GB. Interestingly, <i>Ghd7</i> expression was significantly reduced in GB-10, which may trigger the <i>Hd3a</i> and <i>RFT1</i> activation. A bulk segregation analysis indicated that a single nucleotide variant on chromosome 7 was genetically linked to the early heading phenotype of GB-10 lines. Taken together, we reported the successful isolation of GB-10 as an early-heading mutant.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"412-420"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detection and validation of QTLs for flowering time in morning glory. 牵牛花开花时间qtl的检测与验证。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-10-15 DOI: 10.1270/jsbbs.24067
Hiroaki Katsuyama, Takuro Ito, Kyousuke Ezura, Emdadul Haque, Atsushi Hoshino, Eiji Nitasaka, Michiyuki Ono, Shusei Sato, Sachiko Isobe, Hiroyuki Fukuoka, Nobuyoshi Watanabe, Tsutomu Kuboyama
{"title":"Detection and validation of QTLs for flowering time in morning glory.","authors":"Hiroaki Katsuyama, Takuro Ito, Kyousuke Ezura, Emdadul Haque, Atsushi Hoshino, Eiji Nitasaka, Michiyuki Ono, Shusei Sato, Sachiko Isobe, Hiroyuki Fukuoka, Nobuyoshi Watanabe, Tsutomu Kuboyama","doi":"10.1270/jsbbs.24067","DOIUrl":"https://doi.org/10.1270/jsbbs.24067","url":null,"abstract":"<p><p>Japanese morning glory (<i>Ipomoea nil</i>), a short day plant, has been used for studying flowering times. Here, quantitative trait loci (QTL) analysis for days from sowing to flowering (DTF) of F<sub>2</sub> between <i>I. nil</i> var. Tokyo Kokei Standard (TKS) and <i>I. hederacea</i> line var. Q65, an early flowering variety, revealed seven QTLs: <i>QTL Ipomoea Flowering 1-7</i> (<i>qIF1-7</i>). The position of <i>qIF3</i>, which had the most significant effect among the seven QTLs, corresponds with that of <i>I. nil</i> (or <i>I.</i> <i>hederacea</i>) <i>CONSTANS</i> (<i>InCO/IhCO</i>) in the linkage map. There is a single-base InDel in the coding sequence of <i>InCO/IhCO</i>. The single-base deletion (SBD) causes a frame-shift mutation and loss of function in TKS allele (<i>inco-1</i>). <i>I. nil</i> accessions bearing <i>inco-1</i> tend to flower early, similarly to rice varieties bearing the loss of function allele of <i>CO</i> ortholog, <i>hd1</i>. The TKS allele of <i>qIF3</i> reduces DTF and corresponds with the inferred effect of <i>inco-1</i>. Based on the distribution of <i>inco-1</i>, a hypothesis was proposed that the SBD in <i>inco-1</i> might have played an important role in the expansion of Japanese morning glories, originally native to the tropical regions of the Americas, into temperate Asia.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"339-348"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129579/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification and characterization of QTLs for brown planthopper resistance from wild rice, Oryza rufipogon. 野生稻抗褐飞虱qtl的鉴定与鉴定。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-11-21 DOI: 10.1270/jsbbs.25027
Hoang Nam Nguyen, Takashige Ishii, Sachiyo Sanada-Morimura, Shao-Hui Zheng, Daisuke Fujita
{"title":"Identification and characterization of QTLs for brown planthopper resistance from wild rice, <i>Oryza rufipogon</i>.","authors":"Hoang Nam Nguyen, Takashige Ishii, Sachiyo Sanada-Morimura, Shao-Hui Zheng, Daisuke Fujita","doi":"10.1270/jsbbs.25027","DOIUrl":"https://doi.org/10.1270/jsbbs.25027","url":null,"abstract":"<p><p>The brown planthopper (<i>Nilaparvata lugens</i> (Stål); BPH) is a serious pest of rice (<i>Oryza sativa</i> L.). Host plant resistance is an effective means of controlling it; at least 46 BPH resistance genes have been identified. However, BPH can overcome resistance genes, so we need to detect more genes. To find new BPH resistance genes in <i>Oryza rufipogon</i>, we analysed quantitative trait loci (QTLs) associated with BPH resistance. Using 161 backcross recombinant inbred lines derived from <i>O. rufipogon</i> accession W0630, we identified eight loci associated with resistance. <i>qBPH5</i> and <i>qBPH6</i>, on chromosomes 5 and 6, were validated in F<sub>2</sub> and F<sub>2:3</sub> populations derived from crosses between <i>O. sativa japonica</i> variety 'Nipponbare' and the inbred lines. BPH resistance of a line carrying both QTLs was higher than that of lines carrying just one. Pyramiding improved resistance and can be used in breeding BPH-resistant rice.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"455-462"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13148877/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147833717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Breeding and characterization of a new sweetpotato cultivar, 'Miyaakari', with bright yellow flesh for confectionery processing. 甘薯新品种“Miyaakari”的选育和特性,具有用于糖果加工的亮黄色果肉。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-10-18 DOI: 10.1270/jsbbs.25017
Keisuke Suematsu, Yumi Kai, Rie Kurata, Akira Kobayashi, Takeo Sakaigaichi, Yukari Kawata, Tetsufumi Sakai, Yasuhiro Takahata, Masaru Yoshinaga, Kenji Katayama, Toshiro Fujita
{"title":"Breeding and characterization of a new sweetpotato cultivar, 'Miyaakari', with bright yellow flesh for confectionery processing.","authors":"Keisuke Suematsu, Yumi Kai, Rie Kurata, Akira Kobayashi, Takeo Sakaigaichi, Yukari Kawata, Tetsufumi Sakai, Yasuhiro Takahata, Masaru Yoshinaga, Kenji Katayama, Toshiro Fujita","doi":"10.1270/jsbbs.25017","DOIUrl":"https://doi.org/10.1270/jsbbs.25017","url":null,"abstract":"<p><p>We developed a new sweetpotato cultivar, 'Miyaakari', for confectionery processing. It was released in 2023. Herein we observed that Miyaakari shows a significantly higher yield compared to two major sweetpotato cultivars in Japan, 'Kokei No. 14' and 'Beniharuka'. Miyaakari has a higher carotenoid content than Kokei No. 14 and Beniharuka, and the flesh color of heat-cooked Miyaakari sweetpotato is bright yellow. The quality of heat-cooked Miyaakari sweetpotato (i.e., hardness and sweetness) is more stable during storage compared to Beniharuka. These characteristics are suitable for food processing. Indeed, a primary food manufacturer concluded that Miyaakari is suitable for ingredients of paste and diced food products. Miyaakari will thus both contribute to an increased production of ingredients for confectionery processing and improve the quality of sweetpotato sweets.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"463-469"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129569/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification and characterization of QTLs for brown planthopper resistance from wild rice, Oryza nivara (Sharma et Shastry). 野生水稻Oryza nivara (Sharma et Shastry)抗褐飞虱qtl的鉴定与鉴定。
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-10-25 DOI: 10.1270/jsbbs.25038
Hoang Nam Nguyen, Cuong Dinh Nguyen, Sachiyo Sanada-Morimura, Shao-Hui Zheng, Daisuke Fujita
{"title":"Identification and characterization of QTLs for brown planthopper resistance from wild rice, <i>Oryza nivara</i> (Sharma et Shastry).","authors":"Hoang Nam Nguyen, Cuong Dinh Nguyen, Sachiyo Sanada-Morimura, Shao-Hui Zheng, Daisuke Fujita","doi":"10.1270/jsbbs.25038","DOIUrl":"https://doi.org/10.1270/jsbbs.25038","url":null,"abstract":"<p><p>The brown planthopper (<i>Nilaparvata lugens</i> (Stål); BPH) is a serious insect pest of rice (<i>Oryza sativa</i> L.). Host plant resistance is an effective means of controlling this pest; up to date at least 46 BPH resistance genes have been identified. However, BPH can overcome resistance conferred by single resistance genes. Therefore, it is necessary to detect new and durable resistance genes. Here, we identified quantitative trait loci (QTLs) for BPH resistance from the wild rice <i>Oryza nivara</i> (Sharma et Shastry) IRGC 89073. Using backcrossed populations derived from IRGC 89073 × the susceptible 'Taichung 65', we detected two resistance QTLs, <i>qBPH4</i> on chromosome 4 and <i>qBPH11</i> on chromosome 11. <i>qBPH11</i> was validated in the BC<sub>3</sub>F<sub>2</sub> population. A near-isogenic line carrying <i>qBPH11</i> showed significant resistance to BPH in antibiosis, antixenosis, MSST, and honeydew tests. These results suggest that IRGC 89073 harbors valuable genetic resources that could enhance BPH resistance in rice breeding programs, particularly through pyramiding strategies using marker-assisted selection.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"75 5","pages":"369-377"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129573/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification and evaluation of important agronomic traits in 49 synthetic hexaploid wheat (AABBDD) germplasm resources grown on the Qinghai-Tibet Plateau, China. 青藏高原49个合成六倍体小麦(AABBDD)种质资源重要农艺性状鉴定与评价
IF 2.2 4区 农林科学
Breeding Science Pub Date : 2025-12-01 Epub Date: 2025-11-13 DOI: 10.1270/jsbbs.25015
Shuxiang Yin, Jicheng Shen, Fahui Ye, Xia Li, Caixia Zhao, Chaobo Liu, Meixi Song, Qingxu Wang, Demei Liu, Ruijuan Liu, Shunzong Ning, Lianquan Zhang, Huaigang Zhang, Yuhu Shen, Wenjie Chen
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