Using carbon isotope discrimination to select maize (Zea mays L.) inbred lines and hybrids for drought tolerance

Monneveux, Philippe; Sheshshayee, M. S.; Akhter, Javed; Ribaut, Jean-Marcel

doi:10.1016/j.plantsci.2007.06.003

Cited by 51 publications

(53 citation statements)

References 39 publications

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“…C of the IL was largely decreased compared with what was observed in C 3 plants (Vogel, 1980) and similar to previous reports for maize (Kubásek et al, 2007;Monneveux et al, 2007;Pengelly et al, 2011). Surprisingly, the absolute range for D 13 C within the IL was not much lower than for a diverse set of International Maize and Wheat Improvement Center hybrid cultivars (Tieszen and Grant, 1990) and close to the absolute range reported for C 3 crops (Henderson et al, 1998;Rebetzke et al, 2008;Xu et al, 2008).…”

supporting

confidence: 88%

“…C in a diverse set of maize lines, other authors found significant genotypic variation for D 13 C values in both inbred lines and hybrids (Tieszen and Grant, 1990;Monneveux et al, 2007;Pengelly et al, 2011). One reason for the contradictory results regarding the significance of genetic variation of D 13 C in maize might lie in the specific properties of the plant material used for the reported experiments.…”

mentioning

confidence: 92%

“…For C 4 plants, our knowledge about the mechanisms underlying D 13 C and about its association with water use efficiency is much more limited. Differences in D 13 C between genotypes of C 4 species have been reported, among others, for sorghum (Sorghum bicolor; Hubick et al, 1990) and maize (Zea mays; Monneveux et al, 2007). However, comprehensive studies analyzing the inheritance of D…”

mentioning

confidence: 99%

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Stable Carbon Isotope Discrimination Is under Genetic Control in the C4 Species Maize with Several Genomic Regions Influencing Trait Expression

et al. 2013

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In plants with C 4 photosynthesis, physiological mechanisms underlying variation in stable carbon isotope discrimination (D 13 C) are largely unknown, and genetic components influencing D 13 C have not been described. We analyzed a maize (Zea mays) introgression library derived from two elite parents to investigate whether D 13C is under genetic control in this C 4 species. High-density genotyping with the Illumina MaizeSNP50 Bead Chip was used for a detailed structural characterization of 89 introgression lines. Phenotypic analyses were conducted in the field and in the greenhouse for kernel D 13C as well as plant developmental and photosynthesis-related traits. Highly heritable significant genetic variation for D 13C was detected under field and greenhouse conditions. For several introgression library lines, D 13C values consistently differed from the recurrent parent within and across the two phenotyping platforms. D 13C was significantly associated with 22 out of 164 analyzed genomic regions, indicating a complex genetic architecture of D 13C. The five genomic regions with the largest effects were located on chromosomes 1, 2, 6, 7, and 9 and explained 55% of the phenotypic variation for D In C 3 plants, the important steps of CO 2 uptake include the diffusion of atmospheric CO 2 through the boundary layer and the stomata. Subsequently, CO 2 is taken up by the cell and enters the chloroplast, where carboxylation by Rubisco takes place. During photosynthetic carbon fixation, the strongest fractionation of carbon isotopes occurs during the carboxylation reaction of Rubisco (Roeske and O'Leary, 1984). A theoretical model of D 13 C in C 3 photosynthesis has been described by Farquhar et al. (1982), in which D 13 C depends linearly on the ratio of intercellular to ambient partial pressure of CO 2 (p i p a 21 ), and thus provides an indication of stomatal conductance and photosynthetic capacity. Additionally, the model includes the dependency of D 13C on the fractionation of carbon isotopes during CO 2 diffusion in the air and on the enzymatic properties of the Rubisco enzyme.For rice (Oryza sativa), tomato (Solanum lycopersicum), and wheat (Triticum aestivum), it has been shown that genetic variation for D 13C is quantitative, genotype-byenvironment interaction is small, and the trait heritability is high (Condon and Richards, 1992;Rebetzke et al., 2002;Comstock et al., 2005;Impa et al., 2005). Quantitative trait

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confidence: 88%

mentioning

confidence: 92%

mentioning

confidence: 99%

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Stable Carbon Isotope Discrimination Is under Genetic Control in the C4 Species Maize with Several Genomic Regions Influencing Trait Expression

et al. 2013

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“…It is very likely that the residue cover, even though it helps to maintain the humidity of the top-layers of the soil, dries faster than the soil and thus presents a higher temperature than both soil and vegetation. Also, better water availability of CA should have been reflected in a significant decrease in the carbon isotopic composition of the leaves of this C4 species in comparison with CP agriculture plots due to a decrease of the leakiness of the bundle-sheath cells or by an increase of the C i /C c as a consequence of an increase of the photosynthetic capacity [27]. Therefore, due to the fact that the trial has been running under CA since 2009, yield improvements were likely not related due to increased soil moisture or decreased temperature but due to a long-term improvement in soil health and fertility.…”

Section: Implications Of Growing Conditions On Yield Parametersmentioning

confidence: 99%

Phenotyping Conservation Agriculture Management Effects on Ground and Aerial Remote Sensing Assessments of Maize Hybrids Performance in Zimbabwe

Gracia‐Romero

Vergara-Díaz

Thierfelder³

et al. 2018

Remote Sensing

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Abstract:In the coming decades, Sub-Saharan Africa (SSA) faces challenges to sustainably increase food production while keeping pace with continued population growth. Conservation agriculture (CA) has been proposed to enhance soil health and productivity to respond to this situation. Maize is the main staple food in SSA. To increase maize yields, the selection of suitable genotypes and management practices for CA conditions has been explored using remote sensing tools. They may play a fundamental role towards overcoming the traditional limitations of data collection and processing in large scale phenotyping studies. We present the result of a study in which Red-Green-Blue (RGB) and multispectral indexes were evaluated for assessing maize performance under conventional ploughing (CP) and CA practices. Eight hybrids under different planting densities and tillage practices were tested. The measurements were conducted on seedlings at ground level (0.8 m) and from an unmanned aerial vehicle (UAV) platform (30 m), causing a platform proximity effect on the images resolution that did not have any negative impact on the performance of the indexes. Most of the calculated indexes (Green Area (GA) and Normalized Difference Vegetation Index (NDVI)) were significantly affected by tillage conditions increasing their values from CP to CA. Indexes derived from the RGB-images related to canopy greenness performed better at assessing yield differences, potentially due to the greater resolution of the RGB compared with the multispectral data, although this performance was more precise for CP than CA. The correlations of the multispectral indexes with yield were improved by applying a soil-mask derived from a NDVI threshold with the aim of corresponding pixels with vegetation. The results of this study highlight the applicability of remote sensing approaches based on RGB images to the assessment of crop performance and hybrid choice.

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“…Carbon isotope discrimination is a good measure of leaf transpiration efficiency in C 3 plants and has been proposed as a select criterion for greater water efficiency in breeding programs in water-limited environments (Farquhar and Richards, 1984;Condon et al, 1992). However, the relationship between carbon isotope discrimination and drought effects in C 4 plants is still controversial (Monneveux et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Isotopic composition of maize as related to N-fertilization and irrigation in the Mediterranean region

Lasa

Irañeta²,

Muro

et al. 2011

Sci. agric. (Piracicaba, Braz.)

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Nitrate leaching as a result of excessive application of N-fertilizers and water use is a major problem of vulnerable regions. The farming of maize requires high N fertilization and water inputs in Spain. Isotopic techniques may provide information on the processes involved in the N and C cycles in farmed areas. The aim of this work was studying the impact of sprinkler and furrow irrigation and N input on maize (Zea mays L.) yields, and whether isotopic composition can be used as indicator of best farming practices. Trials were set up in Tudela (Spain) with three rates of N fertilization (0, 240 and 320 kg urea-N ha -1 ) and two irrigation systems (furrow and sprinkler). Yield, nitrogen content, irrigation parameters, N fate and C and N isotope composition were determined. The rate of N fertilization required to obtain the same yield is considerably higher under furrow irrigation, since the crop has less N at its disposal in furrow irrigation as a result of higher loss of nitrogen by NO 3 --N leaching and denitrification. A lower δ 13 C in plants under furrow irrigation was recorded.The δ 15 N value of plant increased with the application rate of N under furrow irrigation. Key words: Zea mays L., furrow irrigation, nitrogen, sprinkler irrigationComposição isotópica do milho relacionada à fertilização nitrogenada e método de irrigação na região do Mediterrâneo RESUMO: A lixiviação de nitratos resultante da aplicação excessiva de fertilizantes nitrogenados e o uso excessivo de água são problemas sérios em regiões vulneráveis. A cultura do milho(Zea mays L.) na Espanha exige altos níveis de fertilização nitrogenada e irrigação. Técnicas isotópicas podem prover informações sobre os processos envolvidos nos ciclos do N e do C em área agrícolas. Avaliou-se o impacto da irrigação por aspersão ou sulco e adição de N na produtividade do milho e se a composição isotópica pode ser usada como indicador de melhores práticas de manejo da produção agrícola. Os ensaios foram realizados em Tudela, Espanha, utilizando três níveis de fertilização nitrogenada (0, 240 e 320 kg ureia-N ha -1 ) e dois sistemas de irrigação (sulco e aspersão). Foram determinados produtividade, teor de nitrogênio, parâmetros de irrigação, fixação de N e C e composição isotópica dos grãos. Os níveis de N exigidos para obtenção de produtividades idênticas são maiores sob a irrigação em sulcos, uma vez que nestas condições as perdas de nitrogênio pela lixiviação de NO 3 --N e denitrificação são maiores e, consequentemente, a disponibilidade de N é menor. Foi registrado menor δ 13 C nas plantas irrigadas por sulcos. Os valores do δ 15 N nas plantas irrigadas por sulcos aumentaram com os níveis de fertilização nitrogenada. Palavras chave: Zea mays L., irrigação por sulco, nitrogênio, irrigação por aspersão

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Using carbon isotope discrimination to select maize (Zea mays L.) inbred lines and hybrids for drought tolerance

Cited by 51 publications

References 39 publications

Stable Carbon Isotope Discrimination Is under Genetic Control in the C4 Species Maize with Several Genomic Regions Influencing Trait Expression

Stable Carbon Isotope Discrimination Is under Genetic Control in the C4 Species Maize with Several Genomic Regions Influencing Trait Expression

Phenotyping Conservation Agriculture Management Effects on Ground and Aerial Remote Sensing Assessments of Maize Hybrids Performance in Zimbabwe

Isotopic composition of maize as related to N-fertilization and irrigation in the Mediterranean region

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