Abstract
The risk of drought is high in the Sudan savannah zone of West and Central Africa because rainfall in this area is unpredictable in quantity and distribution. Thus, improved maize genotypes tolerant to drought could stabilize maize grain yield in this zone, where recurrent drought threatens grain production. Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces, were evaluated for tolerance to terminal water deficit before flowering. Water deficit significantly reduced growth, grain yield and yield components of the maize genotypes. Significant differences were observed among genotypes for all the traits measured. One hybrid, 9011-30, and two improved OPVs, STR-EV-IWD and IYFD-C0, that showed tolerance to water stress recorded higher grain yield, and accumulated and partitioned more assimilates to the grain than the drought-susceptible genotypes. Also the drought-tolerant genotypes, 9011-30, STR-EV-IWD and IYFD-C0 had more ears/plant and greater numbers of kernels/ear. These genotypes could serve as sources of drought tolerance for the development and improvement of new drought-tolerant maize genotypes.
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Claims 7
Claim · model-written summary
Water deficit significantly reduced growth, grain yield and yield components of maize genotypes.
- Treatment
- Water deficite1
- Outcome
- growth, grain yield and yield componentse1
- Direction
- significantly reducede1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces”
e1“Water deficit significantly reduced growth, grain yield and yield components of the maize genotypes”
Claim · model-written summary
Significant differences among maize genotypes were found for all traits measured.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces”
e2“Significant differences were observed among genotypes for all the traits measured”
Claim · model-written summary
Drought-tolerant maize genotypes 9011-30, STR-EV-IWD and IYFD-C0 recorded higher grain yield than drought-susceptible genotypes under water stress.
- Material
- 9011-30e3
- Treatment
- water stresse3
- Outcome
- grain yielde3
- Direction
- highere3
- Comparator
- drought-susceptible genotypese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces”
e3“One hybrid, 9011-30, and two improved OPVs, STR-EV-IWD and IYFD-C0, that showed tolerance to water stress recorded higher grain yield, and accumulated and partitioned more assimilates to the grain than the drought-susceptible genotypes”
Claim · model-written summary
Drought-tolerant maize genotypes accumulated and partitioned more assimilates to the grain than drought-susceptible genotypes under water stress.
- Material
- 9011-30e3
- Organ / stage
- graine3
- Treatment
- water stresse3
- Outcome
- assimilatese3
- Direction
- moree3
- Comparator
- drought-susceptible genotypese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces”
e3“One hybrid, 9011-30, and two improved OPVs, STR-EV-IWD and IYFD-C0, that showed tolerance to water stress recorded higher grain yield, and accumulated and partitioned more assimilates to the grain than the drought-susceptible genotypes”
Claim · model-written summary
Drought-tolerant maize genotypes had more ears per plant.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces”
e4“Also the drought-tolerant genotypes, 9011-30, STR-EV-IWD and IYFD-C0 had more ears/plant and greater numbers of kernels/ear”
Claim · model-written summary
Drought-tolerant maize genotypes had greater numbers of kernels per ear.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces”
e4“Also the drought-tolerant genotypes, 9011-30, STR-EV-IWD and IYFD-C0 had more ears/plant and greater numbers of kernels/ear”
Claim · model-written summary
The tolerant maize genotypes could serve as sources of drought tolerance for breeding.
- Outcome
- sources of drought tolerancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“These genotypes could serve as sources of drought tolerance for the development and improvement of new drought-tolerant maize genotypes”
The same questions in other papers
drought · yield · Zea mays (maize)Positive and negative results
299 papers in the same direction as this paper · 53 in the opposite direction
- negative
- negative
- negative
349 papers more in this group
See all 353 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.