دورية أكاديمية
A novel procedure for identifying a hybrid QTL-allele system for hybrid-vigor improvement, with a case study in soybean (Glycine max) yield
| العنوان: | A novel procedure for identifying a hybrid QTL-allele system for hybrid-vigor improvement, with a case study in soybean (Glycine max) yield |
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| المؤلفون: | Jinshe Wang, Jianbo He, Jiayin Yang, Junyi Gai |
| المصدر: | Crop Journal, Vol 11, Iss 1, Pp 177-188 (2023) |
| بيانات النشر: | KeAi Communications Co., Ltd., 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Agriculture LCC:Agriculture (General) |
| مصطلحات موضوعية: | Breeding by design, Diallel hybrid population, PLSRGA (partial least squares regression via genetic algorithm), QTL-allele matrix of additive/dominance effect, Simulation experiment, Soybean [Glycine max (L.) Merr.], Agriculture, Agriculture (General), S1-972 |
| الوصف: | “Breeding by design” for pure lines may be achieved by construction of an additive QTL-allele matrix in a germplasm panel or breeding population, but this option is not available for hybrids, where both additive and dominance QTL-allele matrices must be constructed. In this study, a hybrid-QTL identification approach, designated PLSRGA, using partial least squares regression (PLSR) for model fitting integrated with a genetic algorithm (GA) for variable selection based on a multi-locus, multi-allele model is described for additive and dominance QTL-allele detection in a diallel hybrid population (DHP). The PLSRGA was shown by simulation experiments to be superior to single-marker analysis and was then used for QTL-allele identification in a soybean DPH yield experiment with eight parents. Twenty-eight main-effect QTL with 138 alleles and nine QTL × environment QTL with 46 alleles were identified, with respective contributions of 61.8% and 23.5% of phenotypic variation. Main-effect additive and dominance QTL-allele matrices were established as a compact form of the DHP genetic structure. The mechanism of heterosis superior-to-parents (or superior-to-parents heterosis, SPH) was explored and might be explained by a complementary locus-set composed of OD+ (showing positive over-dominance, most often), PD+ (showing positive partial-to-complete dominance, less often) and HA+ (showing positive homozygous additivity, occasionally) loci, depending on the parental materials. Any locus-type, whether OD+, PD + and HA+, could be the best genotype of a locus. All hybrids showed various numbers of better or best genotypes at many but not necessarily all loci, indicating further SPH improvement. Based on the additive/dominance QTL-allele matrices, the best hybrid genotype was predicted, and a hybrid improvement approach is suggested. PLSRGA is powerful for hybrid QTL-allele detection and cross-SPH improvement. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2214-5141 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S221451412200126X; https://doaj.org/toc/2214-5141 |
| DOI: | 10.1016/j.cj.2022.04.019 |
| URL الوصول: | https://doaj.org/article/ab0d623597244e8eab4f145b8a08bb01 |
| رقم الأكسشن: | edsdoj.b0d623597244e8eab4f145b8a08bb01 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22145141 |
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| DOI: | 10.1016/j.cj.2022.04.019 |