B73 and related inbred lines in maize breeding

Stojaković, Milisav; Bekavac, Goran; Vasić, Nenad

doi:10.2298/gensr0503245s

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…We acknowledge that these corn and soybean plants were not the actual P generation and therefore they were only regarded as the proxy for the P generation. We, however, argue that this would not affect our results because both seeds have been used as the parent material of numerous corn and soybean varieties (Grant et al, 2008;Stojaković et al, 2005). Soybean is self-pollinating and all of the recessive genes in the corn seed have been have been eliminated, ensuring that there is no genetic deterioration of the offspring.…”

Section: Plant Growthmentioning

confidence: 99%

Nitrogen preference across generations under changing ammonium nitrate ratios

Daryanto

Wang

Gilhooly

et al. 2018

Journal of Plant Ecology

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Aims: Nitrogen (N) in natural environments is typically supplied by a mixture of ammonia (NH4 +) and nitrate (NO3-). However, factors that underlie either NH4 + or NO3preference, and how such preference will change across generations remain unclear. We conducted a series of experiments to answer whether: (i) NH4 + :NO3ratio is the driving factor for plant N preference, and (ii) this preference is consistent across generations. Methods: We conducted both: (i) field observations (as a proxy for parent or P generation) and (ii) greenhouse experiments (the first generation or F1 and the second generation or F2) using corn and soybean grown under different NH4 + :NO3ratios. Important findings: Both corn and soybean had the physiological plasticity to prefer either NH4 + or NO3depending on NH4 + :NO3ratios, and this plasticity was consistent across generations. Corn, however, showed a stronger preference towards NO3while soybean showed a stronger preference towards NH4 +. While both plants would try to make use of the most available form of N in their growing medium, plant species, physiological characteristics (e.g., maturity) and plant nutrient status also determined the extent of N uptake. From the evolutionary and productivity perspective, this plasticity is beneficial, allowing plants to effectively acquire available N particularly in a changing climate.

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Section: Plant Growthmentioning

confidence: 99%

Nitrogen preference across generations under changing ammonium nitrate ratios

Daryanto

Wang

Gilhooly

et al. 2018

Journal of Plant Ecology

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Section: Genome Sequencingmentioning

confidence: 99%

“…A full-scale program was launched in 2005 by the National Science Foundation [129], to sequence the cultivar B73, one of the most used maize inbred lines for the production of the high-yielding commercial hybrids [131,132]. Three years later, the first draft sequence for maize genome was published [133]. According to a multi-genome investigation carried out in 2021, new variation in gene content, genome organization, and methylation was discovered in maize [134].…”

Section: Genome Sequencingmentioning

confidence: 99%

Maize Breeding: From Domestication to Genomic Tools

et al. 2022

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Maize will continue to expand and diversify as an industrial resource and a feed and fuel crop in the near future. The United Nations estimate that in 2050 the global population will reach 9.7 billion people. In this context, food security is increasingly being discussed. Additionally, another threat to food security is global warming. It is predicted that both the quantity and the quality of crops will be seriously affected by climate change in the near future. Scientists and breeders need to speed up the process of creating new maize cultivars that are resistant to climate stress without diminishing yield or quality. The present paper provides a brief overview of some of the most important genomics tools that can be used to develop high-performance and well-adapted hybrids of maize and also emphasizes the contribution of bioinformatics to an advanced maize breeding. Genomics tools are essential for a precise, fast, and efficient breeding of crops especially in the context of climate challenges. Maize breeders are able now to develop new cultivars with better traits more easily as a result of the new genomic approaches, either by aiding the selection process or by increasing the available diversity through precision breeding procedures. Furthermore, the use of genomic tools may in the future represent a way to accelerate the processes of de novo domestication of the species.

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“…Besides American dent and European flint inbred lines crosses, practice of combining L and NL inbred lines, as heterotic pairs for developing superior hybrids, are present both in US and Europe, with Reid Yellow Dent (like BSSS, BSSS x Iowa, etc.) and Lancaster being the most frequently used pairs (Stojaković et al, 2005(Stojaković et al, , 2012.…”

mentioning

confidence: 99%

Leaf transcriptome analysis of Lancaster versus other heterotic groups’ maize inbred lines revealed different regulation of cold‐responsive genes

Đeri

Božić

Dudić

et al. 2021

J Agronomy Crop Science

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One of the strategies for overcoming global climate change threatening to decrease maize yield is early sowing. To contribute to the development of cold‐tolerant hybrids this research focused on the genetic background's comparative analysis in maize inbreds with good combining ability. Leaf whole‐transcriptome sequencing of 46 maize genotypes revealed 77 differentially expressed genes (DEGs) between Lancaster and other heterotic groups (i.e. BSSS, Iowa dent, Ohio), referred to as non‐Lancaster group, under optimal growing conditions. Cold test of the subset of four Lancaster and four non‐Lancaster lines showed that the former were cold sensitive and the latter cold tolerant. Cold‐induced expression analysis of seven DEGs in eight lines revealed different expression regulation dependent on the duration of cold exposure and genetic background for six out of seven analysed genes—chloroplast ATP‐sulphurylase, photosystem II cytochrome b559 alpha subunit, CIPK serine‐threonine protein kinase 15, glutamyl‐tRNA reductase, photosystem II reaction centre protein I and Calvin cycle CP12‐chloroplastic‐like encoding genes. The results imply that differently regulated basic processes between Lancaster and non‐Lancaster maize group involve, at least, photosynthesis and sulphate assimilation, contributing to their different cold response and different adaptation to low temperatures.

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B73 and related inbred lines in maize breeding

Cited by 4 publications

References 3 publications

Nitrogen preference across generations under changing ammonium nitrate ratios

Nitrogen preference across generations under changing ammonium nitrate ratios

Maize Breeding: From Domestication to Genomic Tools

Leaf transcriptome analysis of Lancaster versus other heterotic groups’ maize inbred lines revealed different regulation of cold‐responsive genes

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