Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments

Annor, Benjamin; Badu‐Apraku, B.; Nyadanu, Daniel; Akromah, R.; Fakorede, M. A. B.

doi:10.1038/s41598-019-50345-3

Cited by 20 publications

(35 citation statements)

References 35 publications

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“…However, production of hybrids with high chlorophyll content would be effective using this set of inbred lines. The results of the present study were in agreement with that of Badu-Apraku under HN conditions in this study is in agreement with the results of other researchers (Ertiro et al, 2017;Obeng-Bio et al, 2019;Annor et al, 2019) The potential value of an inbred line in a breeding program is determined by the GCA effects of the line and the SCA effects of its hybrid (Ertiro et al, 2017). Inbred lines with good GCA effects contribute invaluably to breeding programs as they serve as parents for superior hybrid development.…”

Section: Discussionsupporting

confidence: 93%

“…The results are also An entry/tester genotype and genotype × environment (GGE) biplot of 29 (best 15, worst 10, and 4 checks) extra-early quality protein maize (QPM) hybrids evaluated across low-N (LN), Striga, and high N (HN) environments in Ghana and Nigeria during the major and minor growing season, 2018inconsistent with those of Badu-Apraku,Menkir, and Lum (2007), who reported that additive gene action controlled the inheritance of Striga damage, whereas nonadditive gene action conditioned the inheritance of the number of emerged Striga plants. The predominance of additive gene action detected for GY and other traits under HN conditions in this study is in agreement with the results of other researchers(Annor et al, 2019;Ertiro et al, 2017;Obeng-Bio et al, 2019) but is inconsistent with the findings ofFan et al (2014), who reported nonadditive gene action. Although the inbred lines used for this study were extracted from Striga-resistant populations, the prominence of the additive gene action for GY and most measured traits was not limited to the Striga management conditions.…”

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confidence: 51%

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Genetics of extra‐early‐maturing yellow and orange quality protein maize inbreds and derived hybrids under low soil nitrogen and Striga infestation

et al. 2020

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Ideas 1. General combining ability (GCA) effects were superior over specific combining ability (SCA) effects indicating that additive genes largely controlled grain yield and other traits among the newly developed extra-early quality protein maize inbred lines under low nitrogen, Striga-infested and high nitrogen conditions. 2. Maternal genetic effects influenced plant height under Striga-infested condition which suggested that inbred lines that exhibited significant and positive GCA-female effects for plant height should not be used as female parents to avoid production of tall hybrids that are liable to lodging. 3. Genetic distances were significantly associated with grain yield under low nitrogen, Strigainfested and high nitrogen conditions which implied that inbred lines that had high pairwise genetic distances should be considered for hybrid production to maximize heterosis. This article is protected by copyright. All rights reserved. 2 4. TZEEQI 358 displayed significant and desirable GCA effects for grain yield and other important traits across low nitrogen, Striga-infested and high nitrogen conditions and could be a useful source of valuable alleles for population improvements. 5. TZEEIORQ 58 x TZEEQI 397 exhibited high grain yield and stability across the low nitrogen, Striga-infested and high nitrogen environments and could potentially address the food and nutritional insecurities prevailing in sub-Saharan Africa.

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Section: Discussionsupporting

confidence: 93%

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confidence: 51%

Genetics of extra‐early‐maturing yellow and orange quality protein maize inbreds and derived hybrids under low soil nitrogen and Striga infestation

et al. 2020

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“…One of the primary concerns of plant breeders and agronomists is to investigate the effectiveness of plants under biotic and abiotic stress conditions [ 23 ]. Thus, for this purpose, popcorn genotypes were grown under different N levels and harvested at different vegetative stages.…”

Section: Discussionmentioning

confidence: 99%

Limited Nitrogen and Plant Growth Stages Discriminate Well Nitrogen Use, Uptake and Utilization Efficiency in Popcorn

Khan

Júnior

Ferreira

et al. 2020

Plants

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The extensive use of nitrogen (N) in agriculture has caused negative impacts on the environment and costs. In this context, two pot experiments were performed under different N levels and harvested at different vegetative stages to assess two popcorn inbred lines (P2 and L80) and their hybrid (F1 = P2 × L80) for the N use, uptake and utilization efficiency (with the inclusion and exclusion of root N content); to find the contrasting N levels and vegetative stages that effect nitrogen use efficiency (NUE) and to understand the relationship between the traits related to NUE. The hybrid and P2 were confirmed better than L80 for all the studied traits. NUE is mainly affected by the shoot dry weight, uptake and utilization efficiency. Extremely low and high N levels were found to be more discriminating for N use and dry weight, respectively. At the V6 (six fully expanded leaf) stage, root N content (RNC) should be considered; in contrast, at the VT (tasseling stage) stage, RNC should not be considered for the uptake and utilization efficiency. The genetic parameter performance for N use, uptake, shoot dry weight and N content could favor the achievement of the genetic gain in advanced segregating generations.

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“…This can result in variation in their nutritional and bioactive components. Striga-resistant yellow-orange maize hybrids can mature early under low soil nitrogen and drought condition (Benjamin et al, 2019). Thus, breeding Striga-resistant hybrids will increase maize production and lead to improved incomes and livelihoods of farmers as well as enhance the sustainability of the seed companies (Menkir, 2006;Menkir et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Striga-Resistant Yellow-Orange Maize Hybrids for Bioactive, Carbohydrate, and Pasting Properties

Elemosho

Irondi

Alamu

et al. 2020

Front. Sustain. Food Syst.

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Understanding the bioactive constituents and physicochemical components in cereals can provide insights into their potential health benefits and food applications. This study evaluated some bioactive constituents, carbohydrate profiles and pasting properties of 16 Striga-resistant hybrids, with yellow-orange kernel color and semi-flint to flint kernel texture, grown in two replications at two field locations in Nigeria. Carotenoids were quantified using HPLC, while other analyses were carried out using standard laboratory methods. The ranges of major carotenoids (μg/g) across the two locations varied from 2.6 to 9.6 for lutein, from 2.1 to 9.7 for zeaxanthin, from 0.8 to 2.9 for β-cryptoxanthin, from 1.4 to 4.1 for β-carotene; with total xanthophylls and provitamin A carotenoids (pVAC) ranging from 5.4 to 17.1 and 1.4 to 4.1 μg/g, respectively. Tannins content ranged from 2.1 to 7.3 mg/g, while phytate ranged from 0.4 to 7.1%. Starch, free sugar, amylose and amylopectin ranged from 40.1 to 88.9%, 1.09 to 6.5%, 15.0 to 34.1%, and 65.9 to 85.0%, respectively. Peak and final viscosities ranged from 57.8 to 114.9 and 120.3 to 261.6 Rapid Visco Units (RVU), respectively. Total xanthophylls, β-carotene, tannins, phytate, sugar, amylose and amylopectin levels, as well as peak and final viscosities, varied significantly (p < 0.05) across the hybrids. Amylose was significantly correlated (p < 0.05) with total xanthophylls, β-carotene, pVAC, phytate and pasting temperature (r = 0.3, 0.3, 0.4, 0.3, 0.3, respectively), but starch significantly correlated with tannins (r = 0.3). Hence, the Striga-resistant yellow-orange maize hybrids have a good combination of bioactive constituents, carbohydrate profile and pasting properties, which are partly influenced by hybrid.

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Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments

Cited by 20 publications

References 35 publications

Genetics of extra‐early‐maturing yellow and orange quality protein maize inbreds and derived hybrids under low soil nitrogen and Striga infestation

Genetics of extra‐early‐maturing yellow and orange quality protein maize inbreds and derived hybrids under low soil nitrogen and Striga infestation

Limited Nitrogen and Plant Growth Stages Discriminate Well Nitrogen Use, Uptake and Utilization Efficiency in Popcorn

Characterization of Striga-Resistant Yellow-Orange Maize Hybrids for Bioactive, Carbohydrate, and Pasting Properties

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