Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya
In Kenya and many other African countries, improving rice productivity is vital for future food security. To improve rice productivity in Kenya, near-isogenic lines (NIL) were developed by introducing Gn1a and WFP, genes that function to increase grain number per panicle by increasing secondary and...
| Autores principales: | , , , , , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Informa UK Limited
2023
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/163919 |
| _version_ | 1855520344726568960 |
|---|---|
| author | Kikuta, Mayumi Menge, Daniel Makori Gichuhi, Emily Waringa Samejima, Hiroaki Tomita, Rena Kimani, John Munji Musila, Ruth Nzisa Doi, Kazuyuki Ashikari, Motoyuki Angeles-Shim, Rosalyn Jena, Kshirod Kumar Makihara, Daigo |
| author_browse | Angeles-Shim, Rosalyn Ashikari, Motoyuki Doi, Kazuyuki Gichuhi, Emily Waringa Jena, Kshirod Kumar Kikuta, Mayumi Kimani, John Munji Makihara, Daigo Menge, Daniel Makori Musila, Ruth Nzisa Samejima, Hiroaki Tomita, Rena |
| author_facet | Kikuta, Mayumi Menge, Daniel Makori Gichuhi, Emily Waringa Samejima, Hiroaki Tomita, Rena Kimani, John Munji Musila, Ruth Nzisa Doi, Kazuyuki Ashikari, Motoyuki Angeles-Shim, Rosalyn Jena, Kshirod Kumar Makihara, Daigo |
| author_sort | Kikuta, Mayumi |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In Kenya and many other African countries, improving rice productivity is vital for future food security. To improve rice productivity in Kenya, near-isogenic lines (NIL) were developed by introducing Gn1a and WFP, genes that function to increase grain number per panicle by increasing secondary and primary rachis-branches, into NERICA 1, a registered variety in Kenya. The aim of this study was to determine whether the introduction of these genes has the potential to improve rice productivity under tropical highland conditions in central Kenya. Field experiments were conducted in 2016 and 2017 at a lowland rice field in Mwea, Kenya, under different nitrogen fertilization conditions using three lines of NERICA 1 introgressed with Gn1a and/or WFP (NIL-Gn1a, NIL-WFP, and NIL-Gn1a+WFP) and their recurrent parents, NERICA 1. Two years of field experiments revealed that the introgression lines enhanced grain yield by increasing the number of primary and secondary rachis-branches and the number of grains per panicle. Gn1a and WFP showed additive effects and the introgression of both genes alleviated the negative effects on yield components observed in the introgressed lines, resulting in higher grain yield. Sufficient nitrogen fertilization was required to increase yield in the single-gene introgression lines. However, the line with both Gn1a and WFP achieved reasonable yields even under low fertilizer conditions in Mwea, Kenya. As these introgression lines have similar growing characteristics to their parent variety, they are expected to contribute to increased rice production in Kenya and similar environments in sub-Saharan Africa. |
| format | Journal Article |
| id | CGSpace163919 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1639192025-02-19T14:24:54Z Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya Kikuta, Mayumi Menge, Daniel Makori Gichuhi, Emily Waringa Samejima, Hiroaki Tomita, Rena Kimani, John Munji Musila, Ruth Nzisa Doi, Kazuyuki Ashikari, Motoyuki Angeles-Shim, Rosalyn Jena, Kshirod Kumar Makihara, Daigo grain yield africa south of sahara highlands tropics In Kenya and many other African countries, improving rice productivity is vital for future food security. To improve rice productivity in Kenya, near-isogenic lines (NIL) were developed by introducing Gn1a and WFP, genes that function to increase grain number per panicle by increasing secondary and primary rachis-branches, into NERICA 1, a registered variety in Kenya. The aim of this study was to determine whether the introduction of these genes has the potential to improve rice productivity under tropical highland conditions in central Kenya. Field experiments were conducted in 2016 and 2017 at a lowland rice field in Mwea, Kenya, under different nitrogen fertilization conditions using three lines of NERICA 1 introgressed with Gn1a and/or WFP (NIL-Gn1a, NIL-WFP, and NIL-Gn1a+WFP) and their recurrent parents, NERICA 1. Two years of field experiments revealed that the introgression lines enhanced grain yield by increasing the number of primary and secondary rachis-branches and the number of grains per panicle. Gn1a and WFP showed additive effects and the introgression of both genes alleviated the negative effects on yield components observed in the introgressed lines, resulting in higher grain yield. Sufficient nitrogen fertilization was required to increase yield in the single-gene introgression lines. However, the line with both Gn1a and WFP achieved reasonable yields even under low fertilizer conditions in Mwea, Kenya. As these introgression lines have similar growing characteristics to their parent variety, they are expected to contribute to increased rice production in Kenya and similar environments in sub-Saharan Africa. 2023-07-03 2024-12-19T12:53:11Z 2024-12-19T12:53:11Z Journal Article https://hdl.handle.net/10568/163919 en Open Access Informa UK Limited Kikuta, Mayumi; Menge, Daniel Makori; Gichuhi, Emily Waringa; Samejima, Hiroaki; Tomita, Rena; Kimani, John Munji; Musila, Ruth Nzisa; Doi, Kazuyuki; Ashikari, Motoyuki; Angeles-Shim, Rosalyn; Jena, Kshirod Kumar and Makihara, Daigo. 2023. Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya. Plant Production Science, Volume 26 no. 3 p. 309-319 |
| spellingShingle | grain yield africa south of sahara highlands tropics Kikuta, Mayumi Menge, Daniel Makori Gichuhi, Emily Waringa Samejima, Hiroaki Tomita, Rena Kimani, John Munji Musila, Ruth Nzisa Doi, Kazuyuki Ashikari, Motoyuki Angeles-Shim, Rosalyn Jena, Kshirod Kumar Makihara, Daigo Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya |
| title | Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya |
| title_full | Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya |
| title_fullStr | Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya |
| title_full_unstemmed | Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya |
| title_short | Contribution of genes related to grain number (Gn1a and WFP) introgressed into NERICA 1 to grain yield under tropical highland conditions in central Kenya |
| title_sort | contribution of genes related to grain number gn1a and wfp introgressed into nerica 1 to grain yield under tropical highland conditions in central kenya |
| topic | grain yield africa south of sahara highlands tropics |
| url | https://hdl.handle.net/10568/163919 |
| work_keys_str_mv | AT kikutamayumi contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT mengedanielmakori contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT gichuhiemilywaringa contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT samejimahiroaki contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT tomitarena contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT kimanijohnmunji contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT musilaruthnzisa contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT doikazuyuki contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT ashikarimotoyuki contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT angelesshimrosalyn contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT jenakshirodkumar contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya AT makiharadaigo contributionofgenesrelatedtograinnumbergn1aandwfpintrogressedintonerica1tograinyieldundertropicalhighlandconditionsincentralkenya |