Breeding by selective introgression: Theory, practices, and lessons learned from rice
Future demands for increased productivity and resilience to abiotic/biotic stresses of major crops require new technologies of breeding by design (BBD) built on massive information from functional and population genomics research. A novel strategy of breeding by selective introgression (BBSI) has be...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-06-01
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| Series: | Crop Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514121000726 |
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| author | Fan Zhang Yingyao Shi Jauhar Ali Jianlong Xu Zhikang Li |
| author_facet | Fan Zhang Yingyao Shi Jauhar Ali Jianlong Xu Zhikang Li |
| author_sort | Fan Zhang |
| collection | DOAJ |
| description | Future demands for increased productivity and resilience to abiotic/biotic stresses of major crops require new technologies of breeding by design (BBD) built on massive information from functional and population genomics research. A novel strategy of breeding by selective introgression (BBSI) has been proposed and practiced for simultaneous improvement, genetic dissection and allele mining of complex traits to realize BBD. BBSI has three phases: a) developing large numbers of trait-specific introgression lines (ILs) using backcross breeding in elite genetic backgrounds as the material platform of BBD; b) efficiently identifying genes or quantitative trait loci (QTL) and mining desirable alleles affecting different target traits from diverse donors as the information platform of BBD; and c) developing superior cultivars by BBD using designed QTL pyramiding or marker-assisted recurrent selection. Phase (a) has been implemented massively in rice by many Chinese research institutions and IRRI, resulting in the development of many new green super rice cultivars plus large numbers of ILs in 30 + elite genetic backgrounds. Phase (b) has been demonstrated in a series of proof-of-concept studies of high-efficiency genetic dissection of rice yield and tolerance to abiotic stresses using ILs and DNA markers. Phase (c) has also been implemented by designed QTL pyramiding, resulting in a prototype of BBD in several successful cases. The BBSI strategy can be easily extended for simultaneous trait improvement, efficient gene and QTL discovery and allele mining of complex traits using advanced breeding lines from crosses between a common “backbone” parent and a set of elite parents in conventional pedigree breeding programs. BBSI can be relatively easily adopted by breeding programs with small budgets, but the BBSI-based BBD strategy can be fully and more efficiently implemented by large seed companies with sufficient capacity. |
| first_indexed | 2024-12-22T02:21:58Z |
| format | Article |
| id | doaj.art-44316877f13244c48bbc86efcf782702 |
| institution | Directory Open Access Journal |
| issn | 2214-5141 |
| language | English |
| last_indexed | 2024-12-22T02:21:58Z |
| publishDate | 2021-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj.art-44316877f13244c48bbc86efcf7827022022-12-21T18:42:07ZengKeAi Communications Co., Ltd.Crop Journal2214-51412021-06-0193646657Breeding by selective introgression: Theory, practices, and lessons learned from riceFan Zhang0Yingyao Shi1Jauhar Ali2Jianlong Xu3Zhikang Li4Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; College of Agronomy, Anhui Agricultural University, Hefei 230036, Anhui, ChinaCollege of Agronomy, Anhui Agricultural University, Hefei 230036, Anhui, ChinaRice Breeding Platform, International Rice Research Institute (IRRI), Los Baños, Laguna 4031, PhilippinesInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, Guangdong, China; Corresponding authors.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; College of Agronomy, Anhui Agricultural University, Hefei 230036, Anhui, China; Corresponding authors.Future demands for increased productivity and resilience to abiotic/biotic stresses of major crops require new technologies of breeding by design (BBD) built on massive information from functional and population genomics research. A novel strategy of breeding by selective introgression (BBSI) has been proposed and practiced for simultaneous improvement, genetic dissection and allele mining of complex traits to realize BBD. BBSI has three phases: a) developing large numbers of trait-specific introgression lines (ILs) using backcross breeding in elite genetic backgrounds as the material platform of BBD; b) efficiently identifying genes or quantitative trait loci (QTL) and mining desirable alleles affecting different target traits from diverse donors as the information platform of BBD; and c) developing superior cultivars by BBD using designed QTL pyramiding or marker-assisted recurrent selection. Phase (a) has been implemented massively in rice by many Chinese research institutions and IRRI, resulting in the development of many new green super rice cultivars plus large numbers of ILs in 30 + elite genetic backgrounds. Phase (b) has been demonstrated in a series of proof-of-concept studies of high-efficiency genetic dissection of rice yield and tolerance to abiotic stresses using ILs and DNA markers. Phase (c) has also been implemented by designed QTL pyramiding, resulting in a prototype of BBD in several successful cases. The BBSI strategy can be easily extended for simultaneous trait improvement, efficient gene and QTL discovery and allele mining of complex traits using advanced breeding lines from crosses between a common “backbone” parent and a set of elite parents in conventional pedigree breeding programs. BBSI can be relatively easily adopted by breeding programs with small budgets, but the BBSI-based BBD strategy can be fully and more efficiently implemented by large seed companies with sufficient capacity.http://www.sciencedirect.com/science/article/pii/S2214514121000726BackcrossTrait-specific introgression lineBreeding by selective introgressionDesigned QTL pyramiding |
| spellingShingle | Fan Zhang Yingyao Shi Jauhar Ali Jianlong Xu Zhikang Li Breeding by selective introgression: Theory, practices, and lessons learned from rice Crop Journal Backcross Trait-specific introgression line Breeding by selective introgression Designed QTL pyramiding |
| title | Breeding by selective introgression: Theory, practices, and lessons learned from rice |
| title_full | Breeding by selective introgression: Theory, practices, and lessons learned from rice |
| title_fullStr | Breeding by selective introgression: Theory, practices, and lessons learned from rice |
| title_full_unstemmed | Breeding by selective introgression: Theory, practices, and lessons learned from rice |
| title_short | Breeding by selective introgression: Theory, practices, and lessons learned from rice |
| title_sort | breeding by selective introgression theory practices and lessons learned from rice |
| topic | Backcross Trait-specific introgression line Breeding by selective introgression Designed QTL pyramiding |
| url | http://www.sciencedirect.com/science/article/pii/S2214514121000726 |
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