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Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition

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Title Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition
 
Creator Bankole, F.
Menkir, A.
Olaoye, G.
Olakojo, O.
Gedil, M.
 
Subject MAIZE
ASSOCIATIONS
GRAIN
YIELDS
DROUGHT
PHENOTYPIC VARIATION
ABIOTIC STRESS
BIOTIC STRESS
 
Description Open Access Journal
The study aimed at examining the associations between yield and other traits under drought stress and non-stress conditions. A total of 150 MARS testcrosses were evaluated under both conditions at the International Institute of Tropical Agriculture substation for two years under during the dry season. Genotypic and phenotypic correlation, multiple stepwise regression and path co-efficient analyses were carried out to examine the relationship among the traits under both environments. Results showed anthesis-silking interval, days to silking, husk cover and plant aspect were significantly associated with yield under drought condition at both genotypic and phenotypic levels. Yield was positively correlated with plant and ear height but had a negative correlation with plant and ear aspect at both levels under well-watered condition. Regression analysis showed that ears per plant, plant aspect, ear aspect, days to silking, leaf death and plant height had a direct effect on yield, contributing a total of 71.1 % of observed variation under drought, while ears per plant, ear aspect, plant aspect, days to pollen shed, days to silking and plant height contributed about 31.42 % to yield under well-watered conditions. The study concluded that these traits be used as selection criteria as it will aid improvement of maize yield.
Peer Review
 
Date 2019-11-14T16:16:14Z
2019-11-14T16:16:14Z
2019-10-30
 
Type Journal Article
 
Identifier Bankole, F., Menkir, A., Olaoye, G., Olakojo, O. & Gedil, M. (2019). Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition. Acta Agriculturae Slovenica, 114(1), 75-84.
1581-9175
https://hdl.handle.net/10568/105743
 
Language en
other
 
Rights CC-BY-NC-ND-4.0
 
Format 75-84
 
Source Acta Agriculturae Slovenica