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TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik

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https://www.readbyqxmd.com/read/28916922/evaluation-of-zmcct-haplotypes-for-genetic-improvement-of-maize-hybrids
#1
Yipu Li, Lixiu Tong, Lele Deng, Qiyu Liu, Yuexian Xing, Chao Wang, Baoshen Liu, Xiaohong Yang, Mingliang Xu
The elite ZmCCT haplotypes which have no transposable element in the promoter could enhance maize resistance to Gibberella stalk rot and improve yield-related traits, while having no or mild impact on flowering time. Therefore, they are expected to have great value in future maize breeding programs. A CCT domain-containing gene, ZmCCT, is involved in both photoperiod response and stalk rot resistance in maize. At least 15 haplotypes are present at the ZmCCT locus in maize germplasm, whereas only three of them are found in Chinese commercial maize hybrids...
September 15, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28913655/quantitative-trait-loci-for-resistance-to-stripe-rust-of-wheat-revealed-using-global-field-nurseries-and-opportunities-for-stacking-resistance-genes
#2
Firdissa E Bokore, Richard D Cuthbert, Ron E Knox, Harpinder S Randhawa, Colin W Hiebert, Ron M DePauw, Asheesh K Singh, Arti Singh, Andrew G Sharpe, Amidou N'Diaye, Curtis J Pozniak, Curt McCartney, Yuefeng Ruan, Samia Berraies, Brad Meyer, Catherine Munro, Andy Hay, Karim Ammar, Julio Huerta-Espino, Sridhar Bhavani
Quantitative trait loci controlling stripe rust resistance were identified in adapted Canadian spring wheat cultivars providing opportunity for breeders to stack loci using marker-assisted breeding. Stripe rust or yellow rust, caused by Puccinia striiformis Westend. f. sp. tritici Erikss., is a devastating disease of common wheat (Triticum aestivum L.) in many regions of the world. The objectives of this research were to identify and map quantitative trait loci (QTL) associated with stripe rust resistance in adapted Canadian spring wheat cultivars that are effective globally, and investigate opportunities for stacking resistance...
September 14, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28913578/loci-on-chromosomes-1a-and-2a-affect-resistance-to-tan-yellow-spot-in-wheat-populations-not-segregating-for-tsn1
#3
Manisha Shankar, Dorthe Jorgensen, Julian Taylor, Ken J Chalmers, Rebecca Fox, Grant J Hollaway, Stephen M Neate, Mark S McLean, Elysia Vassos, Hossein Golzar, Robert Loughman, Diane E Mather
QTL for tan spot resistance were mapped on wheat chromosomes 1A and 2A. Lines were developed with resistance alleles at these loci and at the tsn1 locus on chromosome 5B. These lines expressed significantly higher resistance than the parent with tsn1 only. Tan spot (syn. yellow spot and yellow leaf spot) caused by Pyrenophora tritici-repentis is an important foliar disease of wheat in Australia. Few resistance genes have been mapped in Australian germplasm and only one, known as tsn1 located on chromosome 5B, is known in Australian breeding programs...
September 14, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28887658/genetic-dissection-of-grain-traits-in-yamadanishiki-an-excellent-sake-brewing-rice-cultivar
#4
Satoshi Okada, Miki Suehiro, Kaworu Ebana, Kiyosumi Hori, Akio Onogi, Hiroyoshi Iwata, Masanori Yamasaki
The grain traits of Yamadanishiki, an excellent sake-brewing rice cultivar in Japan, are governed by multiple QTLs, namely, a total of 42 QTLs including six major QTLs. Japanese rice wine (sake) is produced using brewing rice (Oryza sativa L.) that carries traits desirable for sake-brewing, such as a larger grain size and higher white-core expression rate (WCE) compared to cooking rice cultivars. However, the genetic basis for these traits in brewing rice cultivars is still unclear. We performed analyses of quantitative trait locus (QTL) of grain and days to heading over 3 years on populations derived from crosses between Koshihikari, a cooking rice, and Yamadanishiki, an excellent sake-brewing rice...
September 8, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28887657/fine-mapping-of-the-soybean-aphid-resistance-genes-rag6-and-rag3c-from-glycine-soja-85-32
#5
Shichen Zhang, Zhongnan Zhang, Zixiang Wen, Cuihua Gu, Yong-Qiang Charles An, Carmille Bales, Chris DiFonzo, Qijian Song, Dechun Wang
Rag6 and Rag3c were delimited to a 49-kb interval on chromosome 8 and a 150-kb interval on chromosome 16, respectively. Structural variants in the exons of candidate genes were identified. The soybean aphid, an invasive species, has significantly threatened soybean production in North America since 2000. Host-plant resistance is known as an ideal management strategy for aphids. Two novel aphid-resistance loci, Rag6 and Rag3c, from Glycine soja 85-32, were previously detected in a 10.5-cM interval on chromosome 8 and a 7...
September 8, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28887628/development-of-a-set-of-pcr-markers-specific-to-aegilops-longissima-chromosome-arms-and-application-in-breeding-a-translocation-line
#6
Kunyang Wang, Zhishan Lin, Long Wang, Ke Wang, Qinghua Shi, Lipu Du, Xingguo Ye
Transcriptome data were used to develop 134 Aegilops longissima specific PCR markers and their comparative maps were constructed by contrasting with the homologous genes in the wheat B genome. Three wheat- Ae. longissima 1BL·1S (l) S translocation lines were identified using the correspondence markers. Aegilops longissima is an important wild species of common wheat that harbors many genes that can be used to improve various traits of common wheat (Triticum aestivum L.). To efficiently transfer the traits conferred by these Ae...
September 8, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28887587/a-deletion-of-the-gene-encoding-amino-aldehyde-dehydrogenase-enhances-the-pandan-like-aroma-of-winter-melon-benincasa-hispida-and-is-a-functional-marker-for-the-development-of-the-aroma
#7
Saowalak Ruangnam, Samart Wanchana, Nongnat Phoka, Chatree Saeansuk, Sugunya Mahatheeranont, Simon Jan de Hoop, Theerayut Toojinda, Apichart Vanavichit, Siwaret Arikit
The gene conferring a "pandan-like" aroma of winter melon was identified. The sequence variation (804-bp deletion) found in the gene was used as the target for functional marker development. Winter melon (Benincasa hispida), a member of the Cucurbitaceae family, is a commonly consumed vegetable in Asian countries that is popular for its nutritional and medicinal value. A "pandan-like" aroma, which is economically important in crops including rice and soybean, is rarely found in most commercial varieties of winter melon, but is present in some landraces...
September 8, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28887586/increased-genomic-prediction-accuracy-in-wheat-breeding-using-a-large-australian-panel
#8
Adam Norman, Julian Taylor, Emi Tanaka, Paul Telfer, James Edwards, Jean-Pierre Martinant, Haydn Kuchel
Genomic prediction accuracy within a large panel was found to be substantially higher than that previously observed in smaller populations, and also higher than QTL-based prediction. In recent years, genomic selection for wheat breeding has been widely studied, but this has typically been restricted to population sizes under 1000 individuals. To assess its efficacy in germplasm representative of commercial breeding programmes, we used a panel of 10,375 Australian wheat breeding lines to investigate the accuracy of genomic prediction for grain yield, physical grain quality and other physiological traits...
September 8, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28884205/development-of-brassica-oleracea-nigra-monosomic-alien-addition-lines-genotypic-cytological-and-morphological-analyses
#9
Chen Tan, Cheng Cui, Yi Xiang, Xianhong Ge, Zaiyun Li
We report the development and characterization of Brassica oleracea - nigra monosomic alien addition lines (MAALs) to dissect the Brassica B genome. Brassica nigra (2n = 16, BB) represents the diploid Brassica B genome which carries many useful genes and traits for breeding but received limited studies. To dissect the B genome from B. nigra, the triploid F1 hybrid (2n = 26, CCB) obtained previously from the cross B. oleracea var. alboglabra (2n = 18, CC) × B. nigra was used as the maternal parent and backcrossed successively to parental B...
September 7, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28852802/an-ultra-dense-integrated-linkage-map-for-hexaploid-chrysanthemum-enables-multi-allelic-qtl-analysis
#10
Geert van Geest, Peter M Bourke, Roeland E Voorrips, Agnieszka Marasek-Ciolakowska, Yanlin Liao, Aike Post, Uulke van Meeteren, Richard G F Visser, Chris Maliepaard, Paul Arens
We constructed the first integrated genetic linkage map in a polysomic hexaploid. This enabled us to estimate inheritance of parental haplotypes in the offspring and detect multi-allelic QTL. Construction and use of linkage maps are challenging in hexaploids with polysomic inheritance. Full map integration requires calculations of recombination frequency between markers with complex segregation types. In addition, detection of QTL in hexaploids requires information on all six alleles at one locus for each individual...
August 29, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28852799/selection-for-water-soluble-carbohydrate-accumulation-and-investigation-of-genetic%C3%A2-%C3%A3-%C3%A2-environment-interactions-in-an-elite-wheat-breeding-population
#11
Ben Ovenden, Andrew Milgate, Chris Lisle, Len J Wade, Greg J Rebetzke, James B Holland
Water-soluble carbohydrate accumulation can be selected in wheat breeding programs with consideration of genetic × environmental interactions and relationships with other important characteristics such as relative maturity and nitrogen concentration, although the correlation between WSC traits and grain yield is low and inconsistent. The potential to increase the genetic capacity for water-soluble carbohydrate (WSC) accumulation is an opportunity to improve the drought tolerance capability of rainfed wheat varieties, particularly in environments where terminal drought is a significant constraint to wheat production...
August 29, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28840266/accelerating-wheat-breeding-for-end-use-quality-with-multi-trait-genomic-predictions-incorporating-near-infrared-and-nuclear-magnetic-resonance-derived-phenotypes
#12
B J Hayes, J Panozzo, C K Walker, A L Choy, S Kant, D Wong, J Tibbits, H D Daetwyler, S Rochfort, M J Hayden, G C Spangenberg
Using NIR and NMR predictions of quality traits overcomes a major barrier for the application of genomic selection to accelerate improvement in grain end-use quality traits of wheat. Grain end-use quality traits are among the most important in wheat breeding. These traits are difficult to breed for, as their assays require flour quantities only obtainable late in the breeding cycle, and are expensive. These traits are therefore an ideal target for genomic selection. However, large reference populations are required for accurate genomic predictions, which are challenging to assemble for these traits for the same reasons they are challenging to breed for...
August 24, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28836114/investigating-successive-australian-barley-breeding-populations-for-stable-resistance-to-leaf-rust
#13
L A Ziems, J D Franckowiak, G J Platz, E S Mace, R F Park, D Singh, D R Jordan, L T Hickey
Genome-wide association studies of barley breeding populations identified candidate minor genes for pairing with the adult plant resistance gene Rph20 to provide stable leaf rust resistance across environments. Stable resistance to barley leaf rust (BLR, caused by Puccinia hordei) was evaluated across environments in barley breeding populations (BPs). To identify genomic regions that can be combined with Rph20 to improve adult plant resistance (APR), two BPs genotyped with the Diversity Arrays Technology genotyping-by-sequencing platform (DArT-seq) were examined for reaction to BLR at both seedling and adult growth stages in Australian environments...
August 23, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28835997/chromosomes-1bs-and-1rs-for-control-of-male-fertility-in-wheats-and-triticales-with-cytoplasms-of-aegilops-kotschyi-ae-mutica-and-ae-uniaristata
#14
Adam J Lukaszewski
Engineered chromosomes 1BS and 1RS offer a new alternative in the development of hybrid systems in bread wheat and triticale. In the cytoplasmic male sterility system for hybrid wheat based on the cytoplasm of Triticum timopheevi fertility restoration is difficult, with few good restorer genes available. In the system based on the cytoplasms of Aegilops kotschyi, Ae. uniaristata and Ae. mutica, essentially all chromosomes 1B carry locus Rf (multi) that restores male fertility; male sterility manifests itself in wheats with the 1RS...
August 23, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28831522/quantitative-trait-locus-mapping-under-irrigated-and-drought-treatments-based-on-a-novel-genetic-linkage-map-in-mungbean-vigna-radiata-l
#15
Changyou Liu, Jing Wu, Lanfen Wang, Baojie Fan, Zhimin Cao, Qiuzhu Su, Zhixiao Zhang, Yan Wang, Jing Tian, Shumin Wang
A novel genetic linkage map was constructed using SSR markers and stable QTLs were identified for six drought tolerance related-traits using single-environment analysis under irrigation and drought treatments. Mungbean (Vigna radiata L.) is one of the most important leguminous food crops. However, mungbean production is seriously constrained by drought. Isolation of drought-responsive genetic elements and marker-assisted selection breeding will benefit from the detection of quantitative trait locus (QTLs) for traits related to drought tolerance...
August 22, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28828506/an-innovative-procedure-of-genome-wide-association-analysis-fits-studies-on-germplasm-population-and-plant-breeding
#16
Jianbo He, Shan Meng, Tuanjie Zhao, Guangnan Xing, Shouping Yang, Yan Li, Rongzhan Guan, Jiangjie Lu, Yufeng Wang, Qiuju Xia, Bing Yang, Junyi Gai
The innovative RTM-GWAS procedure provides a relatively thorough detection of QTL and their multiple alleles for germplasm population characterization, gene network identification, and genomic selection strategy innovation in plant breeding. The previous genome-wide association studies (GWAS) have been concentrated on finding a handful of major quantitative trait loci (QTL), but plant breeders are interested in revealing the whole-genome QTL-allele constitution in breeding materials/germplasm (in which tremendous historical allelic variation has been accumulated) for genome-wide improvement...
August 21, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28825113/fine-mapping-and-identification-of-a-novel-locus-rsc15-underlying-soybean-resistance-to-soybean-mosaic-virus
#17
Ren Rui, Shichao Liu, Adhimoolam Karthikeyan, Tao Wang, Haopeng Niu, Jinlong Yin, Yunhua Yang, Liqun Wang, Qinghua Yang, Haijian Zhi, Kai Li
Rsc15, a novel locus underlying soybean resistance to SMV, was fine mapped to a 95-kb region on chromosome 6. The Rsc15- mediated resistance is likely attributed to the gene GmPEX14 , the relative expression of which was highly correlated with the accumulation of H 2 O 2 along with the activities of POD and CAT during the early stages of SMV infection in RN-9. Soybean mosaic virus (SMV) causes severe yield losses and seed quality deterioration in soybean [Glycine max (L.) Merr.] worldwide. A series of single dominant SMV resistance genes have been identified on respective soybean chromosomes 2, 13 and 14, while one novel locus, Rsc15, underlying resistance to the virulent SMV strain SC15 from soybean cultivar RN-9 has been recently mapped to a 14...
August 19, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28821914/breeding-progress-genotypic-and-environmental-variation-and-correlation-of-quality-traits-in-malting-barley-in-german-official-variety-trials-between-1983-and-2015
#18
Friedrich Laidig, Hans-Peter Piepho, Dirk Rentel, Thomas Drobek, Uwe Meyer
Evaluation of breeding progress for spring barley varieties in Germany showed that both grain yield and malting quality were considerably improved during the last 33 years, and that genetic effects of protein concentration and malting traits were not associated. Based on historical data, this study aimed to investigate yield potential and malting quality of 187 varieties tested and released in German registration trials to evaluate the value for cultivation and use (VCU) during 1983-2015, and to quantify the environmental variability and the association among traits...
August 18, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28821913/molecular-insights-into-the-origin-of-the-brown-rust-resistance-gene-bru1-among-saccharum-species
#19
Heng-Bo Wang, Ping-Hua Chen, Yan-Qing Yang, Angelique D'Hont, Yun-Hai Lu
Analysis of 387 sugarcane clones using Bru 1 diagnostic markers revealed two possible sources of Bru 1 in Chinese cultivars: one from Saccharum spontaneum and another from Saccharum robustum of New Guinea. Sugarcane brown rust (SBR) is an important fungal disease in many sugarcane production areas around the world, and can cause considerable yield losses in susceptible sugarcane cultivars. One major SBR resistance gene, named Bru1, initially identified from cultivar R570, was shown to be a major SBR resistance source in most of the sugarcane producing areas of the world...
August 18, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28815278/phenotypic-genetic-and-molecular-characterization-of-7b-1-a-conditional-male-sterile-mutant-in-tomato
#20
Anna Pucci, Maurizio Enea Picarella, Andrea Mazzucato
We characterized the photoperiod-sensitive 7B - 1 male-sterile mutant in tomato, showing its allelism with stamenless - 2 . Mapping experiments indicated SlGLO2 , a B-class MADS-box family member, as a strong candidate to underlie the 7B - 1 mutation. The interest in male sterility (MS) dates back to a long time due to its perspective use in hybrid seed production. Here, we characterize 7B-1, a photoperiod-sensitive male-sterile (ms) mutant in tomato (Solanum lycopersicum L.), in which stamens are restored to fertility by permissive growth conditions in short days (SD)...
August 16, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
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