| 000 | 03221nab a2200385 a 4500 | ||
|---|---|---|---|
| 001 | 58742 | ||
| 003 | MX-TxCIM | ||
| 005 | 20240105165911.0 | ||
| 008 | 151013s2017 gw |||p|op||| 00| 0 eng d | ||
| 024 | 8 | _ahttps://doi.org/10.1111/pbr.12464 | |
| 040 | _aCI10YT | ||
| 041 | _aeng | ||
| 100 | 1 |
_aTadesse, B. _8001712791 _gGlobal Maize Program _91821 |
|
| 245 | 1 | 0 | _aCombining ability and testcross performance of drought-tolerant maize inbred lines under stress and non-stress environments in Kenya |
| 260 |
_aBerlin, Germany : _bBlackwell Science Ltd, _c2017. |
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| 500 | _aPeer review | ||
| 500 | _aOpen Access | ||
| 520 | _aDrought and poor soil fertility are among the major abiotic stresses affecting maize productivity in sub-Saharan Africa. Maize breeding efforts at the International Maize and Wheat Improvement Center (CIMMYT) have focused on incorporating drought stress tolerance and nitrogen-use efficiency (NUE) into tropical maize germplasm. The objectives of this study were to estimate the general combining ability (GCA) and specific combining ability (SCA) of selected maize inbred lines under drought stress (DS), low-nitrogen (LN) and optimum moisture and nitrogen (optimum) conditions, and to assess the yield potential and stability of experimental hybrids under these management conditions. Forty-nine experimental three-way cross hybrids, generated from a 7 × 7 line by tester crosses, and six commercial checks were evaluated across 11 optimum, DS and LN sites in Kenya in 2014 using an alpha lattice design with two replicates per entry at each site. DS reduced both grain yield (GY) and plant height (PH), while anthesis–silking interval (ASI) increased under both DS and LN. Hybrids ‘L4/T2’ and ‘L4/T1’ were found to be superior and stable, while inbreds ‘L4’ and ‘L6’ were good combiners for GY and other secondary traits across sites. Additive variance played a greater role for most traits under the three management conditions, suggesting that further progress in the improvement of these traits should be possible. GY under optimum conditions was positively correlated with GY under both DS and LN conditions, but GY under DS and LN was not correlated. Our results suggest the feasibility for simultaneous improvement in grain yield performance of genotypes under optimum, DS and LN conditions. | ||
| 546 | _aText in English | ||
| 650 | 7 |
_93104 _aDrought resistance _2AGROVOC |
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| 650 | 7 |
_aMaize _2AGROVOC _91173 |
|
| 650 | 7 |
_91277 _aStress _2AGROVOC |
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| 650 | 7 |
_96302 _aCrossbreeding _2AGROVOC |
|
| 700 | 1 |
_9870 _aBeyene, Y. _gGlobal Maize Program _8INT2891 |
|
| 700 | 1 |
_aDas, B. _gGlobal Maize Program _gExcellence in Breeding _8INT2825 _9863 |
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| 700 | 1 |
_aMugo, S.N. _gFormerly Global Maize Program _8INT2460 _9840 |
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| 700 | 1 |
_9923 _aOlsen, M. _gGlobal Maize Program _8INT3333 |
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| 700 | 1 |
_91927 _aOikeh, S.O. |
|
| 700 | 1 |
_95063 _aJuma, C. |
|
| 700 | 1 |
_92259 _aLabuschagne, M. |
|
| 700 | 1 |
_aPrasanna, B.M. _gGlobal Maize Program _8INT3057 _9887 |
|
| 773 | 0 |
_wu445212 _x0179-9541 _dBerlin (Germany) : Blackwell Science Ltd _tPlant Breeding _gv. 136, no.2, p. 197-205 |
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| 856 | 4 |
_uhttps://hdl.handle.net/10883/18875 _yOpen Access through DSpace |
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| 942 |
_2ddc _cJA _n0 |
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| 999 |
_c58742 _d58734 |
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