| 000 | 02540nab|a22004097a|4500 | ||
|---|---|---|---|
| 001 | 69467 | ||
| 003 | MX-TxCIM | ||
| 005 | 20251114135500.0 | ||
| 008 | 202510s2025||||-uk|||p|op||||00||0|eng|d | ||
| 022 | _a2045-2322 (Online) | ||
| 024 | 8 | _ahttps://doi.org/10.1038/s41598-025-20383-1 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 0 |
_aSefawdin Berta _940518 |
|
| 245 | 1 | 0 | _aAssessing genetic gain and diversity in Ethiopian bread wheat across six decades |
| 260 |
_aLondon (United Kingdom) : _bNature Research, _c2025. |
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| 500 | _aPeer review | ||
| 500 | _aOpen Access | ||
| 520 | _aAssessing breeding progress and genetic diversity in released varieties is crucial for informing future crop improvement strategies. This study evaluated genetic gain and diversity in 49 Ethiopian wheat varieties released over six decades (1967-2021). Significant yield increases were observed, with 'Shaki' showing the highest gain. However, the average annual genetic gain was modest (0.90% under irrigated, 0.69% under rain-fed). The recent released bread wheat variety '' Shaki '' exhibited a 48.6% increase in grain yield under irrigated conditions and a 37.1% increase under rain-fed conditions over the oldest variety, "Lakech". Genetic diversity analysis revealed a decline in heterozygosity and a skewed allele distribution, suggesting potential inbreeding within the breeding program. Population structure analysis indicated a shared genetic background across decades. The low genetic gain and declining diversity highlight the need for strategies to enhance genetic diversity and incorporate novel yield-associated traits to achieve sustainable genetic improvement in Ethiopian wheat breeding. | ||
| 546 | _aText in English | ||
| 650 | 7 |
_aGenetics _2AGROVOC _91130 |
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| 650 | 7 |
_aGenetic diversity (resource) _2AGROVOC _92974 |
|
| 650 | 7 |
_aGrain _2AGROVOC _91138 |
|
| 650 | 7 |
_aYields _2AGROVOC _91313 |
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| 650 | 7 |
_aRegression analysis _2AGROVOC _95834 |
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| 650 | 7 |
_aAllele frequency _2AGROVOC _99584 |
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| 650 | 7 |
_aWheat _2AGROVOC _91310 |
|
| 651 | 7 |
_aEthiopia _2AGROVOC _92025 |
|
| 700 | 0 |
_aTemesgen Matiwos Menamo _940519 |
|
| 700 | 1 |
_aTarekegn, Z.T. _8001713397 _gGlobal Wheat Program _931150 |
|
| 700 | 0 |
_aTechale Birhan _940520 |
|
| 700 | 0 |
_aAbush Tesfaye Abebe _940521 |
|
| 773 | 0 |
_tScientific Reports _gv. 15, no. 1, art. 36616 _dLondon (United Kingdom) : Nature Research, 2025. _x2045-2322 _wa58025 |
|
| 856 | 4 |
_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/36076 |
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| 942 |
_cJA _n0 _2ddc |
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| 999 |
_c69467 _d69459 |
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