Theoretical and Applied Genetics最新文献

{"title":"Identification of genetic loci for seed shattering in Italian ryegrass (Lolium multiflorum Lam.).","authors":"Ken-Ichi Tamura, Tatsumi Mizubayashi, Hiromoto Yamakawa, Takafumi Yamaguchi","doi":"10.1007/s00122-024-04801-y","DOIUrl":"10.1007/s00122-024-04801-y","url":null,"abstract":"<p><strong>Key message: </strong>We have identified a unique genetic locus for seed shattering in Italian ryegrass that has an exceedingly large effect and shows partial dominance for reduced seed shattering. Genetic improvement of seed retention in forage grasses can contribute to improving their commercial seed production. The objective of this study was to identify the genetic loci responsible for seed shattering in Italian ryegrass (Lolium multiflorum Lam.) using F₂ and F₃ progeny from a cross between a reduced shattering genotype and a self-fertile shattering genotype. High negative correlations (- 0.622 in F₂ and - 0.737 in F₃) were found between two methods of measuring shattering: (1) the percentage of seed shattering obtained by manually stripping the spike and (2) the non-basal floret breaking tensile strength (BTS). On the other hand, basal floret BTS showed a non-significant (F₂) or low (- 0.226 in F₃) correlation with the percentage of seed shattering by stripping. We identified a quantitative trait locus (QTL) near the start of linkage group 2, designated as qSH2.1, which was associated with both seed shattering measured by stripping and non-basal floret BTS with exceptionally high LOD values (11.0-34.0); in addition, we detected five minor QTLs. qSH2.1 explained about 2/3 of the total variation in the percentage of seed shattering by stripping at the late dough stage in the F₂ population. The reduced shattering trait was partially dominant, in contrast to the genetic mode in many previous reports on other crops. Candidate orthologs for the previously reported seed shattering genes were not found near the qSH2.1 locus in the ryegrass genome, suggesting that this QTL may be due to a yet-undiscovered gene.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"11"},"PeriodicalIF":4.4,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142882946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A GWAS identified loci and candidate genes associated with fiber quality traits in a new cotton MAGIC population.","authors":"Jamal Mohammed, Gregory N Thyssen, Lori Hinze, Jinfa Zhang, Linghe Zeng, David D Fang","doi":"10.1007/s00122-024-04800-z","DOIUrl":"10.1007/s00122-024-04800-z","url":null,"abstract":"<p><strong>Key message: </strong>GWAS of a new MAGIC population containing alleles from five tetraploid Gossypium species identified novel fiber QTL and confirmed previously identified stable QTL. Identification of loci and underlying genes for fiber quality traits will facilitate genetic improvement in cotton fiber quality. In this research, a genome-wide association study (GWAS) was carried out for fiber quality attributes using a new multi-parent advanced generation inter-cross (MAGIC) population consisting of 372 recombinant inbred lines (RILs). Sixteen parents including 12 exotic germplasm lines derived from five tetraploid Gossypium species and 4 Upland cotton varieties were intercrossed to develop the population. Both RILs and parental lines were evaluated at three locations, College Station, Texas; Las Cruses, New Mexico; and Stoneville, Mississippi, from 2016 through 2023. Fiber length (UHM) had positive correlation with strength (STR) and length uniformity (UNI) and a negative correlation with micronaire (MIC) and elongation (ELO). By combining all the data from all locations, we identified significant SNPs for ELO, UHM, and UNI while STR and MIC were location dependent. These results suggest an important role of genotype by environment interaction in a GWAS of fiber traits. Twenty possible novel fiber QTL were identified: 10 for STR, three for UNI, and seven for MIC. The QTL for ELO (Chr.D04: 53-Mb), UHM (Chr.D11: 24-Mb), and UNI (Chr.D04: 34-Mb) were stable across multiple environments and may be useful for marker-assisted selection to improve fiber quality. For STR, we found candidate genes Gh_A07G1574 and Gh_A07G1581 to be present in the previously identified QTL region (Chr.A07: 77-Mb) on chromosome A07. Identified loci and their corresponding candidate genes will be useful to improve fiber quality via marker-assisted selection in a cotton breeding.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"10"},"PeriodicalIF":4.4,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142877783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The analysis of the genetic loci affecting phenotypic plasticity of soybean isoflavone content by dQTG.seq model.","authors":"Zhenhong Yang, Yuhang Zhan, Yina Zhu, Hanhan Zhu, Changjun Zhou, Ming Yuan, Haiyan Li, Miao Liu, Weili Teng, Yongguang Li, Xue Zhao, Yuhe Wang, Yingpeng Han","doi":"10.1007/s00122-024-04798-4","DOIUrl":"10.1007/s00122-024-04798-4","url":null,"abstract":"<p><strong>Key message: </strong>The dQTG.seq model was utilized to investigate the genetic underpinnings of phenotypic plasticity in soybean isoflavone content, leading to the identification of 100 marker sites associated with phenotypic plasticity, including 27 transcription factors. Overexpression of Glyma.18G091600 (GmERF7) hairy roots under low temperature, salt, and drought stress confirmed the regulatory role of GmERF7 in the phenotypic plasticity of soybean isoflavone content. Phenotypic plasticity is characteristic of organisms that undergo phenotypic changes in response to environmental fluctuations. This phenomenon is pivotal in evolutionary processes and the emergence of new traits. Isoflavones, significant secondary metabolites found in soybeans, have garnered considerable attention owing to their beneficial physiological effects on human health. The variation in isoflavone content among different soybean varieties is influenced by diverse environmental factors, thereby influencing the evaluation of high and low isoflavone varieties. In this study, we measured the phenotypic plasticity of isoflavone content in recombinant inbred lines Hefeng 25 and L-28 in three different environments over two years. Utilizing the dQTG.seq model, 100 statistically significant markers were identified, and 101 potential genes, including 27 transcription factors, were screened. Through qRT-PCR analysis, elevated expression levels of Glyma.18G091600, Glyma.09G196200, and Glyma.05G229500 were observed in various parts of soybean plants. Under low temperature, drought or salt stress conditions, the related enzymes involved in the isoflavone synthesis pathway were notably upregulated in Glyma.18G091600 (GmERF7) overexpressed hairy roots compared to wild-type controls, resulting to higher phenotypic plasticity values for DZ, GC, GT, and TI. These results suggest that GmERF7 influences the phenotypic plasticity of soybean isoflavone content, enhancing adaptation to adverse environments, while also promoting the synthesis and accumulation of soybean isoflavones.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"9"},"PeriodicalIF":4.4,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142839691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Low frequency of the wild‑type freezing‑tolerance LsCBF7 allele among lettuce population suggests a negative selection during domestication and breeding.","authors":"Sunchung Park, Ainong Shi, Beiquan Mou","doi":"10.1007/s00122-024-04783-x","DOIUrl":"10.1007/s00122-024-04783-x","url":null,"abstract":"","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"8"},"PeriodicalIF":4.4,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11645422/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142819007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient large-scale genomic prediction in approximate genome-based kernel model.","authors":"Hailan Liu, Jinqing Xu, Xuesong Wang, Handong Wang, Lei Wang, Yuhu Shen","doi":"10.1007/s00122-024-04793-9","DOIUrl":"10.1007/s00122-024-04793-9","url":null,"abstract":"<p><strong>Key message: </strong>Three computationally efficient algorithms of GP including RHBK, RHDK, and RHPK were developed in approximate genome-based kernel model. The drastically growing amount of genomic information contributes to increasing computational burden of genomic prediction (GP). In this study, we developed three computationally efficient algorithms of GP including RHBK, RHDK, and RHPK in approximate genome-based kernel model, which reduces dimension of genomic data via Nyström approximation and decreases the computational cost significantly thereby. According to the simulation study and real datasets, our three methods demonstrated predictive accuracy similar to or better than RHAPY, GBLUP, and rrBLUP in most cases. They also demonstrated a substantial reduction in computational time compared to GBLUP and rrBLUP in simulation. Due to their advanced computing efficiency, our three methods can be used in a wide range of application scenarios in the future.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"6"},"PeriodicalIF":4.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mutations in a Leucine-Rich Repeat Receptor-Like Kinase gene result in male sterility and reduction in the number and size of fruit warts in cucumber (Cucumis sativus L.).","authors":"Haiqiang Zhang, Yanjie Luo, Wenlong Zhen, Xin Li, Mengying Liu, Peng Liu, Gaoyuan Zhang, Peng Chen, Yiqun Weng, Hongzhong Yue, Yuhong Li","doi":"10.1007/s00122-024-04790-y","DOIUrl":"10.1007/s00122-024-04790-y","url":null,"abstract":"<p><strong>Key message: </strong>Mutations in the CsEMS1 gene result in male sterility and reduced wart number and density. Male sterility and fruit wart formation are two significant agronomic characteristics in cucumber (Cucumis sativus), yet knowledge of our underlying genetics is limited. In this study, we identified an EMS-induced male sterility and few small warts mutant (msfsw). Histological observations revealed defects the absence of tapetum, meiotic aberration and impaired microspore formation in the anthers of the mutant. The mutant also exhibits a reduction in both the size and number of fruit spines and fruit tubercules. Genetic analysis revealed that a single recessive gene is responsible for the mutant phenotypes. BSA-Seq and fine genetic mapping mapped the msfsw locus to a 63.7 kb region with four predicted genes. Multiple lines of evidence support CsEMS1(CsaV3_3G016940) as the candidate for the mutant allele which encodes an LRR receptor-like kinase, and a non-synonymous SNP inside the exon of CsEMS1 is the causal polymorphisms for the mutant phenotypes. This function of CsEMS1 in determination of pollen fertility was confirmed with generation and characterization of multiple knockout mutations with CRISPR/Cas9 based gene editing. In the wild-type (WT) plants, CsEMS1 was highly expressed in male flowers. In the mutant, the expression level of CsEMS1, several tapetum identity-related genes, and trichome-related genes were all significantly reduced as compared with the wild-type. Protein-protein interaction assays revealed physical interactions between CsEMS1 and CsTPD1. Quantitation of endogenous phytohormones revealed a reduction in the ethylene precursor ACC in CsEMS1 knockout lines. This work identified an important role of CsEMS1 in anther and pollen development as well as fruit spine/wart development in cucumber.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"7"},"PeriodicalIF":4.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genome-wide association study of haploid female fertility (HFF) and haploid male fertility (HMF) in BS39-derived doubled haploid maize lines.","authors":"Mercy Fakude, Ann Murithi, Ursula K Frei, Paul M Scott, Thomas Lübberstedt","doi":"10.1007/s00122-024-04789-5","DOIUrl":"10.1007/s00122-024-04789-5","url":null,"abstract":"<p><strong>Key message: </strong>Restoration of haploid female and haploid male fertility without colchicine is feasible. Three SNPs and eight gene models for HFF, and one SNP and a gene model for HMF were identified. Doubled haploid (DH) breeding accelerates the development of elite inbred lines and facilitates the incorporation of exotic germplasm, offering a powerful tool for maize improvement. Traditional DH breeding relies on colchicine to induce haploid genome doubling. Colchicine is toxic, and its application is labor-intensive, with most genotypes recording low genome doubling rates (10-30%). This study investigates spontaneous haploid genome doubling (SHGD) as a safer and more efficient alternative to colchicine. We evaluated the effectiveness of SHGD in restoring haploid female fertility (HFF) and haploid male fertility (HMF) without colchicine. Using genome-wide association studies (GWAS), we identified genomic regions influencing HFF and HMF. The plant materials included the BS39-haploid isogenic lines (HILs) and BS39-SHGD-haploid isogenic lines (HILs). Our results revealed significant SNP associations for both traits, with candidate genes involved in cell cycle regulation, cytoskeletal organization, and hormonal signaling. Analysis of variance (ANOVA) revealed significant variation in HFF across haploids and two environments. Similarly, HMF showed substantial differences across haploids and between the two environments. Spearman correlation between HFF and HMF showed no correlation (r = -0.03) between the two traits. HFF showed high heritability (0.8), indicating strong genetic control, whereas HMF displayed moderate heritability (0.5), suggesting additional environmental influences. The findings underscore the potential of SHGD to enhance DH breeding efficiency and support the development of new maize varieties tailored to diverse agricultural needs.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"5"},"PeriodicalIF":4.4,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Map-based cloning revealed BhAPRR2 gene regulating the black peel formation of mature fruit in wax gourd (Benincasa hispida).","authors":"Xuling Zhai, Jinqiang Yan, Wenrui Liu, Zheng Li, Zhenqiang Cao, Ying Deng, Renlian Mo, Baochen Wang, Xiaoxin Cheng, Dasen Xie, Biao Jiang","doi":"10.1007/s00122-024-04796-6","DOIUrl":"10.1007/s00122-024-04796-6","url":null,"abstract":"<p><strong>Key message: </strong>Map-based cloning revealed BhAPRR2, encoding a two-component response-regulating protein that regulates the black peel formation of mature fruit in wax gourd. Wax gourd is an economically significant vegetable crop, and peel color is a crucial agronomic trait that influences its commercial value. Although genes controlling light green or white peel have been cloned in wax gourd, the genetic basis and molecular mechanism underlying black peel remain unclear. Here, we confirmed that the peel color of wax gourd is a qualitative trait governed by single gene, with black being dominant over green. Through bulked segregant analysis sequencing (BSA-seq) and map-based cloning, we identified Bh.pf3chr5g483 as the candidate gene. This gene encodes a two-component response-regulating protein and is homologous to APRR2, referred to as BhAPRR2. Compared to P170, the BhAPRR2 in YD1 exhibits multiple mutations in both its coding and promoter regions. Notably, the mutations in the coding region do not affect its nuclear localization or transcriptional activation activity. However, the mutations in the promoter region substantially increase its expression in the peel of YD1, potentially contributing to the black peel phenotype observed in this variety. Furthermore, we developed an insertion/deletion (InDel) marker based on a 93-base pair (bp) insertion/deletion mutation in the promoter region of BhAPRR2, which achieved up to 95.8% phenotypic accuracy in a natural population comprising 165 wax gourd germplasms. In summary, our findings suggest that mutations in the promoter region of BhAPRR2 may contribute to the development of black peel in wax gourd. This discovery provides new insights into the molecular and genetic mechanisms underlying peel color diversity and offers a valuable molecular marker for wax gourd breeding efforts.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"3"},"PeriodicalIF":4.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142808124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of a physical map for Aegilops geniculata chromosome 7M^g and localization of its novel purple coleoptile gene.","authors":"Huanhuan Li, Fu Guo, Yanlong Zhao, Chaoli Wang, Ziwei Fan, Yajun Feng, Xiang Ji, Luna Tao, Chao Ma, Jiajun Qian, Yue Zhao, Qianwen Liu, Sunish K Sehgal, Cheng Liu, Wenxuan Liu","doi":"10.1007/s00122-024-04792-w","DOIUrl":"10.1007/s00122-024-04792-w","url":null,"abstract":"<p><strong>Key message: </strong>A physical map of Aegilops geniculata chromosome 7M^g was constructed, and a novel purple coleoptile gene was localized at 7M^gS bin FL 0.60-0.65 by development of wheat-Ae. geniculata structural aberrations. The development of wheat-wild relative chromosomal structure aberrations not only provides novel germplasm resources for wheat improvement, but also aids in mapping desirable genes to specific chromosomal regions. Aegilops geniculata (2n = 4x = 28, U^gU^gM^gM^g), a wild relative of common wheat, possesses many favorable genes. In this study, Ae. geniculata chromosome 7M^g was identified as harboring a purple coleoptile gene by phenotypic evaluation of Chinese Spring (CS)-Ae. geniculata addition and substitution lines. To construct a physical map of chromosome 7M^g and localize the purple coleoptile gene, 59 molecular markers specific to 7M^g were developed, and 43 wheat-Ae. geniculata 7M^g chromosome structure aberrations were generated based on chromosome centromeric breakage-fusion and ph1b-induced homoeologous recombination. Segment sizes and breakpoint positions of each 7M^g structure aberration were further characterized using in situ hybridization and molecular marker analysis. Consequently, a physical map of chromosome 7M^g was constructed with 59 molecular markers, comprising six bins with 28 markers on 7M^gS and six bins with 31 markers on 7M^gL, and the purple coleoptile gene was mapped to an interval of FL 0.60-0.65 on 7M^gS. The newly developed wheat-Ae. geniculata 7M^g structural aberrations and the physical map of 7M^g will facilitate the transfer and utilization of desirable genes from 7M^g in the future.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"4"},"PeriodicalIF":4.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142808030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptome-guided breeding for Paspalum notatum: producing apomictic hybrids with enhanced omega-3 content.","authors":"Lara Marino, Silvia Altabe, Carolina Marta Colono, Maricel Podio, Juan Pablo Amelio Ortiz, David Balaban, Juliana Stein, Nicolás Spoto, Carlos Acuña, Lorena Adelina Siena, José Gerde, Emidio Albertini, Silvina Claudia Pessino","doi":"10.1007/s00122-024-04788-6","DOIUrl":"10.1007/s00122-024-04788-6","url":null,"abstract":"<p><strong>Key message: </strong>Transcriptomics- and FAME-GC-MS-assisted apomixis breeding generated Paspalum notatum hybrids with clonal reproduction and increased α-linolenic acid content, offering the potential to enhance livestock product's nutritional quality and reduce methane emissions A low omega-6:omega-3 fatty acid ratio is considered an indicator of the nutritional impact of milk fat on human health. In ruminants, major long-chain fatty acids, such as linoleic acid (18:2, omega-6) and α-linolenic acid (18:3, omega-3), originate from dietary sources and reach the milk via the bloodstream. Since forages are the primary source of long-chain fatty acids for such animals, they are potential targets for improving milk lipid composition. Moreover, a high 18:3 content in their diet is associated with reduced methane emissions during grazing. This work aimed to develop genotypes of the forage grass Paspalum notatum with high leaf 18:3 content and the ability for clonal reproduction via seeds (apomixis). We assembled diploid and polyploid Paspalum notatum leaf transcriptomes and recovered sequences of two metabolism genes associated with the establishment of lipid profiles, namely SUGAR-DEPENDENT 1 (SDP1) and PEROXISOMAL ABC TRANSPORTER 1 (PXA1). Primers were designed to amplify all expressed paralogs in leaves. qPCR was used to analyse SDP1 and PXA1 expression in seven divergent genotypes. Reduced levels of SDP1 and PXA1 were found in the polyploid sexual genotype Q4188. Fatty acid methyl esters/gas chromatography/mass spectrometry (FAME/GC/MS) assays confirmed an increased percentage of 18:3 in this genotype. Crosses between Q4188 and the obligate apomictic pollen donor Q4117 resulted in two apomictic F₁ hybrids (JS9 and JS71) with reduced SDP1 and PXA1 levels, increased 18:3 content, and clonal maternal reproduction. These materials could enhance milk and meat quality while reducing greenhouse gas emissions during grazing.</p>","PeriodicalId":22955,"journal":{"name":"Theoretical and Applied Genetics","volume":"138 1","pages":"2"},"PeriodicalIF":4.4,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11625688/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142792367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}