Inheritance of tolerance to flooded soils in maize

Silva, Sérgio Delmar dos Anjos e; Sereno, Maria Jane Cruz de Melo; Silva, Clàudia Fernanda Lemons e; Oliveira, Antônio Costa de; Barbosa-Neto, José Fernandes

doi:10.12702/1984-7033.v07n02a08

Cited by 9 publications

(4 citation statements)

References 13 publications

(13 reference statements)

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“…Although we did not find differences in dry mass attributes (SDM, RDM and RDM/SDM) among treatments in this experiment, studies involving corn breeding in flooded environments have used roots and SDM accumulation as determinant characteristic (Zaidi et al. 2003, Silva et al. 2007).…”

Section: Discussioncontrasting

confidence: 60%

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Early characterization of maize plants in selection cycles under soil flooding*

Souza

Castro

Magalhães³

et al. 2012

Plant Breeding

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To insert maize crop in the lowlands, the National Maize and Sorghum Research Center has developed, through the recurrent phenotypical selection, a maize variety called Saracura-BRS-4154, which has the capability to survive in periods of flooding. This study was carried out with the purpose of characterizing young plants of successive selection cycles of the variety ÔSaracuraÕ, under flooding, concerning the morphophysiology. The assay was carried out in greenhouse by sowing 10 alternate selection cycles and a BR 107 variety known for its susceptibility to flooding. It was found that the last selection cycles resulted in a greater development of thin roots, greater volume and root length. The selection cycles decreased the exodermis and increased aerenchyma formation in the roots over time. There was also leaf plasticity throughout the cycles, and it was noted an increase in the gas exchange parameters and also in the stomata number and size. Our results showed that there was a genetic gain in the morpho-physiological changes related to flooding throughout the selection cycles of ÔSaracuraÕ maize young plants.

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Section: Discussioncontrasting

confidence: 60%

“…2007a). In Brazil, major agricultural limitations by flooding are found in flood plains or wetlands (alluvial and hydromorphic soils), where temporary flooding restricts the agriculture except for flooded rice (Silva et al. 2007).…”

mentioning

confidence: 99%

Early characterization of maize plants in selection cycles under soil flooding*

Souza

Castro

Magalhães³

et al. 2012

Plant Breeding

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“…In Brazil, flood plains or wetlands (alluvial and hydromorphic soils) with temporary floods restrict the diversity of agriculture to rice cultivation only (Silva et al 2007). With this concern and the possibility of crop rotation with maize on flood plains and wetlands, the Maize and Sorghum National Research Center developed, through a stratified phenotypic recurrent selection, a variety of maize known as Saracura-BRS-4154, which is able to survive, produce, and tolerate periodic soil flooding (Ferreira et al 2008).…”

mentioning

confidence: 99%

Morpho-anatomical characterization of root in recurrent selection cycles for flood tolerance of maize (Zea mays L.)

Souza¹,

Castro²,

Pereira³

et al. 2009

PLANT SOIL ENVIRON

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Changes in root anatomical structures at successive cycles of selection (cycle 1 to cycle 18, alternating) were observed in the study of maize (Zea mays L. cv. Saracura-BRS 4154) capable to survive and produce in temporarily flooded soils; this cultivars was developed by the Maize and Sorghum National Research Center through stratified phenotypic recurrent selection for cultivation wetland soils. Field trial was carried out and flooding of the soil was initiated at the six-leaf stage; the soil was flooded with water (20-cm deep) three times per week. Root sample was collected, fixed, and selected for observation in photon microscope. A gradual increase in the number of aerenchyma, the proportion of vascular cylinder, smaller metaxylem, and phloem and epidermis width, and a decrease in exodermis and cortex were observed in successive selection cycles. Such phenotypic changes impart the flood tolerance ability to this maize cultivar.

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“…Significant levels of heritability have been detected under waterlogging or flooding in a number of species for biomass and yield (Collaku and Harrison 2005, Triticum aestivum;Silva et al 2007, Z. mays) as well as for traits assessing the sensitivity to hypoxia (e.g., the percentage of yellow leaf (Zhou et al 2007b, Hordeum vulgare). However, without an estimate of heritability under controlled conditions, it is impossible to infer whether the observed genetic control refers to a constitutive or an induced trait.…”

Section: Genetic Control Of Traits Related To Hypoxia Tolerancementioning

confidence: 99%

Genetic Variability and Determinism of Adaptation of Plants to Soil Waterlogging

Parelle

Dreyer

Brendel

2010

Waterlogging Signalling and Tolerance in Plants

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Flooding or waterlogging, and associated soil hypoxia, affect severely the growth and fitness of plant species, from crops to forest ecosystems. An improved understanding of the intra-species genetic diversity of traits involved in hypoxia tolerance is a prerequisite for crop breeding programmes aimed at increasing the tolerance to waterlogging, as well as for assessing the adaptability of natural populations to waterlogging. Some genotypes within the species have developed adaptations to hypoxia, as shown by differences among populations in growth and fitness, and in traits conferring some degree of tolerance such as sequence, expression and activity of alcohol dehydrogenase, or the ability to develop adventitious roots, increased tissue porosity and hypertrophied lenticels. Genetic control has been estimated for a number of such traits. Overall, under waterlogging, specific tolerance traits show higher heritabilities compared to traits quantifying productivity, damage or overall performance. Genomic regions involved in the control of these traits (i.e., Quantitative Trait Loci QTL) have been detected for tolerance traits in a few species, and allow gaining some insight into the genetic basis of the observed natural diversity or may be a starting point for breeding purposes. However, only for submergence tolerance in rice (sub-1) has a successful gene candidate approach resulted in the detection of alleles that are directly involved in the tolerance process.

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Inheritance of tolerance to flooded soils in maize

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Cited by 9 publications

References 13 publications

Early characterization of maize plants in selection cycles under soil flooding*

Early characterization of maize plants in selection cycles under soil flooding*

Morpho-anatomical characterization of root in recurrent selection cycles for flood tolerance of maize (Zea mays L.)

Genetic Variability and Determinism of Adaptation of Plants to Soil Waterlogging

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