Screening of Maize (Zea mays L.) Genotypes for Adaptation on Contrasted Acid Soils in the Humid Forest Zone of Cameroon

Petmi, Carine; Ngonkeu, Eddy Léonard Mangaptché; Tandzi, N. L.; AMBANG, ZACHEE; Boyomo, Onana; Bell, Joseph Martin; Tekeu, Honoré; Mafouasson, Hortense A.; Malaa, Dorothy; Noé, W.

doi:10.9734/jeai/2016/29333

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[111][112][113][114][115][116][117] Single cross hybrids In acid soil with manganese toxicity, the contribution of non-additive gene effects was greater than the additive effects of genes. [116,117] Testcross hybrids…”

Section: Combining Abilities and Heritability Of Maize Genotypes For mentioning

confidence: 99%

Breeding Maize for Tolerance to Acidic Soils: A Review

et al. 2018

View full text Add to dashboard Cite

Acidic soils hamper maize (Zea mays L.) production, causing yield losses of up to 69%. Low pH acidic soils can lead to aluminum (Al), manganese (Mn), or iron (Fe) toxicities. Genetic variability for tolerance to low soil pH exists among maize genotypes, which can be exploited in developing high-yielding acid-tolerant maize genotypes. In this paper, we review some of the most recent applications of conventional and molecular breeding approaches for improving maize yield under acidic soils. The gaps in breeding maize for tolerance to low soil pH are highlighted and an emphasis is placed on promoting the adoption of the numerous existing acid soil-tolerant genotypes. While progress has been made in breeding for tolerance to Al toxicity, little has been done on Mn and Fe toxicities. More research inputs are therefore required in: (1) developing screening methods for tolerance to manganese and iron toxicities; (2) elucidating the mechanisms of maize tolerance to Mn and Fe toxicities; and, (3) identifying the quantitative trait loci (QTL) responsible for Mn and Fe tolerance in maize cultivars. There is also a need to raise farmers' and other stakeholders' awareness of the problem of Al, Mn, and Fe soil toxicities to improve the adoption rate of the available acid-tolerant maize genotypes. Maize breeders should work more closely with farmers at the early stages of the release process of a new variety to facilitate its adoption level. Researchers are encouraged to strengthen their collaboration and exchange low soil pH-tolerant maize germplasm.

show abstract

Section: Combining Abilities and Heritability Of Maize Genotypes For mentioning

confidence: 99%

Breeding Maize for Tolerance to Acidic Soils: A Review

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Among the new hybrid varieties of highly productive maize, many have interesting traits that could be exploited by breeders in breeding programs. Tandzi et al (2015b) characterized some of the selected inbred lines under acidic soil with aluminum toxicity whereas Petmi et al (2016) screened inbred maize lines for adaptation on acid soils in the humid forest zone of Cameroon. However, no studies have been conducted to provide agro-morphological information such as emergence rate of plants, prolificacy, appearance of the ear and grain yield on the promising varieties of maize hybrids developed by Tekeu et al (2015).…”

Section: Introductionmentioning

confidence: 99%

Agro-morphological Characterization of Maize (Zea mays L.) Hybrids Under Acid Soils in Two Contrasting Environments

Tekeu¹,

Ngonkeu²,

Tandzi³

et al. 2021

JAS

View full text Add to dashboard Cite

Acidic soils cover 75 to 80% of the arable soils in the humid forest areas of Cameroon, causing maize yield losses of around 69%. Sixty-four accessions of maize hybrids were developped from “Line × Tester” crosses between twenty tropical inbred lines with three testers (Cam inbgp117, 88069 and 9450) and between testers themselves, and one acid tolerant open pollinated variety (ATP-SR-Y). Those inbred breeding lines were collected from CIMMYT, IITA and IRAD and the derived single hybrids were characterized using agro-morphological maize’s descriptors on a completely randomized block design in two contrasting environments (Nkoemvone and Nkolbisson). The data collected was subjected to multivariate analyses. The Principal Component Analysis showed the first two components being 73.60% and 78.99% of the total variation in Nkoemvone and Nkolbisson, respectively. Furthermore, grain yield showed a positive and highly significant correlation with the plant emergence rate in Nkoemvone (r = 0.61, P < 0.001) and Nkolbisson (r = 0.84, P < 0.001). Hierarchical Clustering Analysis indicated that these accessions forms four distinct groups, where each of the groups showed clear specific features for which the performance differs from that of the others in Nkoemvone and Nkolbisson. Characters such as plant emergence rate, prolificacy, ear appearance and grain yield have been found as important phenotypic markers for assessing agromorphological diversity of maize hybrids. These traits should necessarily be considered in maize breeding programs for varietal discrimination and formulation of cores collection of maize tolerant to aluminum and manganese toxicities in the soil.

show abstract

Low pH adaptation of tropical exotic acid tolerance yellow maize donor lines in sub-tropical breeding programs

Nginamau,

Kamutando,

Magorokosho

et al. 2024

Euphytica

View full text Add to dashboard Cite

Soil acidity is one of the most important constraints to maize production in Angola, where both yellow and white maize is essential for food and feed requirements. In this study, four yellow acid soil tolerant donor lines from the International Maize and Wheat Improvement Centre (CIMMYT)—Colombia were crossed with ten yellow elite lines adapted to the mid-altitude climatic conditions developed by CIMMYT—Zimbabwe, in order to identify donor lines, which can be potential sources of acid tolerance genes in breeding programs in Angola and within the mid-altitude climatic zones. The two groups of parents were crossed using a line by tester mating design, yielding 36 crosses with sufficient seed, which were evaluated alongside six acid tolerant commercial hybrids, during the 2014–16 cropping seasons at nine sites, representing acid and non-acid soils in Angola and Zimbabwe. A significant (p < 0.05) line and line × tester effect for grain yield performance was observed across acid and non-acid conditions. Acid tolerance donor lines CY3 and CY1 showed the highest positive GCA effects for grain yield. In addition, crosses involving these two donor lines had the best yielding ability and stability under both acid and non-acid conditions. For instance, the crosses CH142464 (ZY2 × CY3) and, CH142447 (ZY2 × CY1) were the best combinations for grain yield performance under both acid and non-acid soil conditions, and were stable compared to the commercial check hybrids. Crosses involving the acid tolerant donor lines mostly flowered earlier than the commercial checks. Overall, the data showed the potential of tropically-adapted exotic yellow maize acid tolerance donor lines in improving productivity of sub-tropical maize under both low-pH and well-managed soil conditions.

show abstract

Screening of Maize (Zea mays L.) Genotypes for Adaptation on Contrasted Acid Soils in the Humid Forest Zone of Cameroon

Cited by 4 publications

References 0 publications

Breeding Maize for Tolerance to Acidic Soils: A Review

Breeding Maize for Tolerance to Acidic Soils: A Review

Agro-morphological Characterization of Maize (Zea mays L.) Hybrids Under Acid Soils in Two Contrasting Environments

Low pH adaptation of tropical exotic acid tolerance yellow maize donor lines in sub-tropical breeding programs

Contact Info

Product

Resources

About