Abstract
The effect of drought stress on yield and its components was studied on six (6) Iranian commercial corn hybrids at the Khorasan Razavi Agricultural Research and Natural Resources Institute Mashhad, Iran in 2010. The study was conducted in a randomized complete block design with three replications under drought stress conditions. There were significant differences among hybrids for all traits except plant height, ear height and upper leaves number, which demonstrated existence of high diversity among hybrids studied for drought tolerance. Among all hybrids, KSC704 (5.13 ton/ha) had the highest and KSC700 (3.16 ton/ha) produced the lowest yields in stress conditions. Correlation coefficients between the studied variables and total yield showed that only kernel no./row and 10 ear weight were significantly positive correlated with total yield under drought condition. We also used cluster analysis (Ward’s method) based on all investigated traits and grain yield under drought stress conditions to classify different hybrids in three groups with low intra-group and high extra-group similarities. Key words: Corn, commercial hybrid, correlation coefficient, cluster analysis.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Significant differences among maize hybrids exist for all traits except plant height, ear height and upper leaves number under drought stress.
- Material
- Iranian commercial corn hybridse0
- Treatment
- drought stresst0
- Outcome
- all traitse1
- Qualifier
- except plant height, ear height and upper leaves numbere1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of drought stress on yield and yield components of maize hybrids”
e0“studied on six (6) Iranian commercial corn hybrids”
e1“There were significant differences among hybrids for all traits except plant height, ear height and upper leaves number”
Claim · model-written summary
KSC704 has the highest yield under drought stress, at 5.13 ton/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of drought stress on yield and yield components of maize hybrids”
e2“Among all hybrids, KSC704 (5.13 ton/ha) had the highest and KSC700 (3.16 ton/ha) produced the lowest yields in stress conditions”
Claim · model-written summary
KSC700 has the lowest yield under drought stress, at 3.16 ton/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of drought stress on yield and yield components of maize hybrids”
e2“Among all hybrids, KSC704 (5.13 ton/ha) had the highest and KSC700 (3.16 ton/ha) produced the lowest yields in stress conditions”
Claim · model-written summary
Total yield is positively correlated with kernel number per row and 10-ear weight under drought condition.
- Treatment
- drought conditione3
- Outcome
- total yielde3
- Direction
- positive correlatede3
- Qualifier
- kernel no./row and 10 ear weighte3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of drought stress on yield and yield components of maize hybrids”
e3“only kernel no./row and 10 ear weight were significantly positive correlated with total yield under drought condition”
Claim · model-written summary
Cluster analysis classified the hybrids into three groups under drought stress.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of drought stress on yield and yield components of maize hybrids”
e4“to classify different hybrids in three groups with low intra-group and high extra-group similarities”
Claim · model-written summary
The hybrids show high diversity in drought tolerance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of drought stress on yield and yield components of maize hybrids”
e5“which demonstrated existence of high diversity among hybrids studied for drought tolerance”