Person: Yunbi Xu
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Yunbi Xu
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Yunbi Xu
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0000-0003-3361-465029 results
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- Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions(Elsevier BV., 2022) Zhiqin Sang; Zhanqin Zhang; Yuxin Yang; Zhiwei Li; Xiaogang Liu; Yunbi Xu; Weihua Li
Publication - Epistasis activation contributes substantially to heterosis in temperate by tropical maize hybrids(Frontiers Media S.A., 2022) Zhiqin Sang; Hui Wang; Yuxin Yang; Zhanqin Zhang; Xiaogang Liu; Zhiwei Li; Yunbi Xu
Publication - Large-scale analysis of combining ability and heterosis for development of hybrid maize breeding strategies using diverse germplasm resources(Frontiers, 2020) Kanchao Yu; Hui Wang; Xiaogang Liu; Cheng Xu; Zhiwei Li; Xiaojie Xu; Jiacheng Liu; Zhenhua Wang; Yunbi Xu
Publication - Why genomics-assisted breeding in (tropical) maize?(CIMMYT, [2020]) Olsen, M.; Gedil, M.; Gowda, M.; Nair, S.K.; Yunbi Xu; Xuecai Zhang; Prasanna, B.M.
Publication - Favorable haplotypes and associated genes for flowering time and photoperiod sensitivity identified by comparative selective signature analysis and GWAS in temperate and tropical maize(Institute of Crop Sciences, 2020) Zhiwei Li; Xiaogang Liu; Xiaojie Xu; Jiacheng Liu; Zhiqin Sang; Kanchao Yu; Yuxin Yang; Wenshuang Dai; Xin Jin; Yunbi Xu
Publication - Maize genomics and molecular breeding in China: potential benefits of global outreach(CIMMYT, 2019) Yunbi Xu
Publication - Molecular Assisted Breeding in Maize(CIMMYT, 2018) Olsen, M.; Nair, S.K.; Gedil, M.; Xuecai Zhang; Yunbi Xu; Gowda, M.; Beyene, Y.; Ogugo, V.; N’ganga, M.; Murithi, A.
Publication - Factors affecting genomic selection revealed by empirical evidence in maize(Elsevier, 2018) Xiaogang Liu; Hongwu Wang; Hui Wang; Zifeng Guo; Xiaojie Xu; Jiacheng Liu; Shanhong Wang; Wen-Xue Li; Cheng Zou; Prasanna, B.M.; Olsen, M.; Changling Huang; Yunbi XuGenomic selection (GS) as a promising molecular breeding strategy has been widely implemented and evaluated for plant breeding, because it has remarkable superiority in enhancing genetic gain, reducing breeding time and expenditure, and accelerating the breeding process. In this study the factors affecting prediction accuracy (rMG) in GS were evaluated systematically, using six agronomic traits (plant height, ear height, ear length, ear diameter, grain yield per plant and hundred-kernel weight) evaluated in one natural and two biparental populations. The factors examined included marker density, population size, heritability, statistical model, population relationships and the ratio of population size between the training and testing sets, the last being revealed by resampling individuals in different proportions from a population. Prediction accuracy continuously increased as marker density and population size increased and was positively correlated with heritability; rMG showed a slight gain when the training set increased to three times as large as the testing set. Low predictive performance between unrelated populations could be attributed to different allele frequencies, and predictive ability and prediction accuracy could be improved by including more related lines in the training population. Among the seven statistical models examined, including ridge regression best linear unbiased prediction (RR-BLUP), genomic BLUP (GBLUP), BayesA, BayesB, BayesC, Bayesian least absolute shrinkage and selection operator (Bayesian LASSO), and reproducing kernel Hilbert space (RKHS), the RKHS and additive-dominance model (Add + Dom model) showed credible ability for capturing non-additive effects, particularly for complex traits with low heritability. Empirical evidence generated in this study for GS-relevant factors will help plant breeders to develop GS-assisted breeding strategies for more efficient development of varieties.
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