| 000 | 03136nab a22003617a 4500 | ||
|---|---|---|---|
| 001 | G91454 | ||
| 003 | MX-TxCIM | ||
| 005 | 20220512225053.0 | ||
| 008 | 220512s2008 at |||p|op||| 00| 0 eng d | ||
| 022 | _a1835-2707 | ||
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 090 | _aCIS-5497 | ||
| 100 | 1 |
_9862 _aZaidi, P.H. _gGlobal Maize Program _8INT2823 |
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| 245 | 1 | 0 | _aRelationship between drought and excess moisture tolerance in maize (Zea mays L.) |
| 260 |
_aAustralia : _bSouthern Cross Publishing, _c2008. |
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| 340 | _aComputer File Printed | ||
| 500 | _aPeer review | ||
| 500 | _aOpen Access | ||
| 520 | _aMaize crops grown during summer-rainy season in Asian tropics are prone to face both drought and excess moisture stress due uneven distribution patterns of monsoon rains in the region. We attempted to identify the relationship between drought and excess moisture tolerance through evaluation of a set of elite maize inbred lines, including lines with known performance under drought, excess moisture and normal inbred lines with unknown performance under either of the stresses. Under normal moisture, performance of normal lines was slightly better than drought and excess moisture lines. However, under stress condition performance of normal lines was very poor with average yield 9.1% under drought and 18.7% under excess moisture stress in comparison to normal moisture. On the other hand, drought lines yielded up to 61.8% under drought and 52.1% under excess moisture in comparison to their yields under normal moisture. Performance of excess moisture lines was also good across stress environments with average yield 68.2% under excess moisture and 35.6% under drought. Relationship between yields under drought and excess moisture stress was strong and significant with drought lines (R2 = 0.587**), but it was relatively weak with excess moisture lines (R2 = 0.288*), while the relationship highly weak with normal lines (R2 = 0.043ns). Our results suggest that improved performance of drought tolerant lines across environments might be related to constitutive changes in stress-adaptive secondary traits such as - anthesis-silking interval <5.0 days, reduced barrenness, delayed senescence and minimum loss of leaf chlorophyll under stress conditions. These constitutive changes with selection and improvement for flowering stage drought tolerance might resulted in improved performance of genotypes under both drought and excess moisture stress, without any yield penalty under normal moisture. | ||
| 536 | _aGlobal Maize Program|Global Wheat Program | ||
| 546 | _aText in English | ||
| 594 | _aINT2823|INT0610 | ||
| 650 | 7 |
_91080 _aDrought _2AGROVOC |
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| 650 | 7 |
_91314 _aZea mays _2AGROVOC |
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| 650 | 7 |
_92241 _aWaterlogging _2AGROVOC |
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| 700 | 1 |
_aYadav, M. _927449 |
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| 700 | 1 |
_aSingh, D.K. _915107 |
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| 700 | 1 |
_aSingh, R.P. _gGlobal Wheat Program _8INT0610 _9825 |
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| 773 | 0 |
_tAustralian Journal of Crop Sciences _n635397 _gv. 1, no. 3, p. 78-96 _dAustralia : Southern Cross Publishing, 2008. _x1835-2707 |
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| 856 | 4 |
_yOpen Access through DSpace _uhttp://hdl.handle.net/10883/3074 |
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| 942 |
_cJA _2ddc _n0 |
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| 999 |
_c27329 _d27329 |
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