Assessing genotypic variation for nitrogen use efficiency and associated traits in Brazilian maize hybrids grown under low and high nitrogen inputs

Zuffo, Leandro Tonello; Luz, Luiz Silva; Destro, Vidomar; Silva, Maria Eduarda Jardim; Rodrigues, Mateus Cupertino; Lara, Lorena Moreira; Faria, Sirlene Viana de; DeLima, Rodrigo Oliveira

doi:10.1007/s10681-021-02806-y

Cited by 5 publications

(6 citation statements)

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“…Therefore, it has specific adaptation to optimum conditions (Badu‐Apraku et al., 2012; Makumbi et al., 2015). BM709PRO2 (C4) has been very croppe in Brazil and is the highest‐yielding hybrid under high N input among 114 commercial hybrids planted in Brazil (Zuffo et al., 2021). The two methods also identified 92V2144 (H147) as the highest‐yielding experimental hybrid under favorable environments.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, we suggest that the evaluation and selection of high-yielding and stable tropical maize cultivars across Southeastern Brazil be performed in at least one environment and over two seasons, but low N stress must also be considered in the evaluation of hybrids, mainly under drought stress, because hybrid performance under N stress was very affected by drought stress in our study. According to Zuffo et al (2021), N stress environments must be included in the screening of maize hybrids for a general adaptation to variation in N level and to maximize selection gains, mainly across tropical environments.…”

Section: Discussionmentioning

confidence: 99%

“…According to Zuffo et al. (2021), N stress environments must be included in the screening of maize hybrids for a general adaptation to variation in N level and to maximize selection gains, mainly across tropical environments.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of yield performance and stability of hybrids and populations of tropical maize across multiple environments in Southeastern Brazil

et al. 2023

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The identification of stable genotypes with high yield in diverse multiple‐stress environments is important to increase maize (Zea mays L.) grain yield under tropical environments. Our objective was to assess the yield performance and stability of experimental hybrids and broad‐based populations of tropical maize across diverse environments in Southeastern Brazil. We evaluated two sets of maize genotypes for grain yield: 190 experimental hybrids along with 6 commercial hybrids and 45 population hybrids along with their 10 parental populations across 8 environments in Southeastern Brazil. Multiple statistical methods were used and compared in the analyses. Combined analysis of variance indicated that genotypic main effect (G), environmental main effect (E), and genotype by environment interaction were highly significant (p < 0.0001) for grain yield. The E accounted for 42% of the total variation for both hybrids and populations, and they were more similar within the growing season than between seasons, mainly for populations. Low nitrogen (N) stress was a key factor in hybrid evaluation and recommendation, particularly under drought stress conditions. Among the environment classification methods, genotype main effect plus genotype × environment interaction (GGE) biplot provided more accurate information about environments grouping and selection of the genotypes than the Eberhart and Russell method. Harmonic mean of the relative performance of the predicted genetic values (HMRPGV) based on mixed models ranked the hybrids and populations according to mean grain yield and stability, penalizing hybrids, and populations with lower stability. Therefore, we recommend the GGE biplot and HMRPGV for genotype evaluation based on multi‐environment trials data. These methods identified 92V2144 and 92V2033 as the most promising hybrids for favorable and 92V2141, 92V2153, and 92V2137 as the most promising for unfavorable environments. 92VX033 and 92VX043 were identified as broadly adapted and stable populations across multiple environments in Southeastern Brazil.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Assessment of yield performance and stability of hybrids and populations of tropical maize across multiple environments in Southeastern Brazil

et al. 2023

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“…In Brazil, even corn is grown in temperate and/or tropical conditions; around 75% of production comes from regions with a tropical climate, where the grain yield potential of cultivated areas is significantly reduced due to the occurrence of abiotic stresses [5][6][7]. Among the abiotic stresses, the low availability of nitrogen in the soil [8,9] is one of the main factors contributing to the grain yield reduction of several crops, including popcorn (Zea mays var. everta).…”

Section: Introductionmentioning

confidence: 99%

Exploring the Potential of Heterosis to Improve Nitrogen Use Efficiency in Popcorn Plants

Santos

Júnior

Bispo

et al. 2023

Plants

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Nitrogen is crucial for plant growth and development, and improving nitrogen use efficiency (NUE) is a viable strategy for reducing dependence on nitrogen inputs and promoting sustainability. While the benefits of heterosis in corn are well known, the physiological mechanisms underlying this phenomenon in popcorn are less understood. We aimed to investigate the effects of heterosis on growth and physiological traits in four popcorn lines and their hybrids under two contrasting nitrogen conditions. We evaluated morpho-agronomic and physiological traits such as leaf pigments, the maximum photochemical efficiency of PSII, and leaf gas exchange. Components associated with NUE were also evaluated. N deprivation caused reductions of up to 65% in terms of plant architecture, 37% in terms of leaf pigments, and 42% in terms of photosynthesis-related traits. Heterosis had significant effects on growth traits, NUE, and foliar pigments, particularly under low soil nitrogen conditions. N-utilization efficiency was found to be the mechanism favoring superior hybrid performance for NUE. Non-additive genetic effects were predominant in controlling the studied traits, indicating that exploring heterosis is the most effective strategy for obtaining superior hybrids to promote NUE. The findings are relevant and beneficial for agro farmers seeking sustainable agricultural practices and improved crop productivity through the optimization of nitrogen utilization.

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“…За вирощування кукурудзи на зерно важливим у її живленні є не тільки кількість внесених поживних речовин з добривами, а й співвідношення між ними. Збалансоване живлення дає змогу уникнути подовження другої половини вегетації і сприяє збиранню врожаю в оптимальні терміни [8].…”

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Grain productivity hybrids of corn depending on the use of complex mineral fertilizers

et al. 2021

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The results of studying the effect of complex mineral fertilizers on the productivity of corn hybrids of different ripeness groups in the conditions of the Right-Bank Forest-Steppe are presented. The studies were carried out in 2019–2021 in the conditions of the experimental feld of the Scientifc and Production Center of the Bila Tserkva National Agrarian University. The experiment studied 9 early, mid-early and mid-season corn hybrids (FAO 170–350) and 4 levels of fertilizers: no fertilizers, N60P60K60, N60P60K60 + Plantonit Frumentum (1 l/ha), N60P60K60 + Plantonit Grain (1 l/ha). It was found that all the studied hybrids had high parameters of the grain mass from the kernel and the mass of 1000 grains when using N60P60K60 + Plantonit Frumentum. There was no signifcant difference in the elements of the yield structure when using N60P60K60 + Plantonit Frumentum and N60P60K60 + Plantonit Grain. The maximum grain yield was provided by mid-season hybrids Carifols and LG30352 on the variant N60P60K60 + Plantonit Frumentum – 8.21 and 7.84 t/ha. When N60P60K60 + Plantonit Grain was applied, the yield was 8.16 and 7.81 t/ha. The grain yield of the hybrids of the early maturing group was 5.82 t/ha, the medium-early – 6.71 t/ha, and the mid-season – 7.35 t/ha. Among the hybrids of the early-maturing group, the most productive was LG30189 (4.75–6.63 t/ha), in the medium-early group – P8409 (5.29–7.61 t/ha), in the mid-season group – Carifols (6.04–8.21 t/ha). Due to the use of complex mineral fertilizers Plantonit Frumentum and Plantonit Grain, the productivity of the crop increased by an average of 6.0 and 5.4 % compared to the application of only N60P60K60. When N60P60K60 + Plantonit Grain was applied, early-maturing hybrids increased grain yield by 1.76 t/ha, medium-early by 2.11 t/ha, mid-season by 1.96 t/ha compared to the variant without fertilizers. At the same time, the greatest increase yield was observed in medium-early and mid-season hybrids (1.48–2.32 t/ha). The eﬀect of mineral fertilizers on the moisture content of corn grain has not been established, and this indicator depended on the biological characteristics of the studied hybrids. Key words: corn, grain, hybrid, mineral fertilizers, productivity, foliar feeding.

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Assessing genotypic variation for nitrogen use efficiency and associated traits in Brazilian maize hybrids grown under low and high nitrogen inputs

Cited by 5 publications

References 82 publications

Assessment of yield performance and stability of hybrids and populations of tropical maize across multiple environments in Southeastern Brazil

Assessment of yield performance and stability of hybrids and populations of tropical maize across multiple environments in Southeastern Brazil

Exploring the Potential of Heterosis to Improve Nitrogen Use Efficiency in Popcorn Plants

Grain productivity hybrids of corn depending on the use of complex mineral fertilizers

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