Seed Physiology and Germination of Grain Legumes

Kigel, Jaime; Rosental, Leah; Fait, Aaron

doi:10.1007/978-1-4939-2797-5_11

Cited by 18 publications

(12 citation statements)

References 206 publications

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“…Thus, all these structures give some degree of impermeability to the seed coat30. Further, osteosclereids cells are presented in the seed coat, which have large intercellular spaces probably contributing to the water lateral distribution25. Figure 2e shows the hilum, micropyle and raphe of the grain.…”

Section: Resultsmentioning

confidence: 99%

“…The presence of callose, suberin and phenolic compounds in the seed coat can reduce its permeability2425. In addition, the permeability of the seed coat increases when its moisture content is increased, changing the hydration behavior from sigmoidal shape to Downward Concave Shape (DCS) (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the osteoesclereids cells cause the lateral hydration of the bean (between the cotyledon and the seed coat) and the homogeneous distribution of water in the bean25. This first part is related to the initial lag phase of the process.…”

Section: Resultsmentioning

confidence: 99%

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Enhancing mung bean hydration using the ultrasound technology: description of mechanisms and impact on its germination and main components

Miano

Pereira

Castanha

et al. 2016

Sci Rep

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The ultrasound technology was successfully used to improve the mass transfer processes on food. However, the study of this technology on the grain hydration and on its main components properties was still not appropriately described. This work studied the application of the ultrasound technology on the hydration process of mung beans (Vigna radiata). This grain showed sigmoidal hydration behavior with a specific water entrance pathway. The ultrasound reduced ~25% of the hydration process time. In addition, this technology caused acceleration of the seed germination – and some hypothesis for this enhancement were proposed. Moreover, it was demonstrated that the ultrasound did not change both structure and pasting properties of the bean starch. Finally, the flour rheological properties proved that the ultrasound increased its apparent viscosity, and as the starch was not modified, this alteration was attributed to the proteins. All these results are very desirable for industry since the ultrasound technology improves the hydration process without altering the starch properties, accelerates the germination process (that is important for the malting and sprouting process) and increases the flour apparent viscosity, which is desirable to produce bean-based products that need higher consistency.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Enhancing mung bean hydration using the ultrasound technology: description of mechanisms and impact on its germination and main components

Miano

Pereira

Castanha

et al. 2016

Sci Rep

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“…Common bean is adapted to relatively humid and cool climatic conditions with optimal average daily temperature for reproductive development ranging from 20 to 25°C (Wantanbe, 1953 ). Temperatures >30°C during the day or >20°C at night result in yield reduction (Hardwick and Andrews, 1980 ; Rainey and Griffiths, 2005 ), and seeds germinate poorly below 15°C (Kotowski, 1926 ; Kigel et al, 2015 ). Thus, it is necessary to restrict field sowing of beans to warm climates or to delay sowing until the soil is warm enough for satisfactory emergence in cool climates (Hardwick, 1972 ).…”

Section: Introductionmentioning

confidence: 99%

Seedling Emergence and Phenotypic Response of Common Bean Germplasm to Different Temperatures under Controlled Conditions and in Open Field

et al. 2016

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Rapid and uniform seed germination and seedling emergence under diverse environmental conditions is a desirable characteristic for crops. Common bean genotypes (Phaseolus vulgaris L.) differ in their low temperature tolerance regarding growth and yield. Cultivars tolerant to low temperature during the germination and emergence stages and carriers of the grain quality standards demanded by consumers are needed for the success of the bean crop. The objectives of this study were (i) to screen the seedling emergence and the phenotypic response of bean germplasm under a range of temperatures in controlled chamber and field conditions to display stress-tolerant genotypes with good agronomic performances and yield potential, and (ii) to compare the emergence of bean seedlings under controlled environment and in open field conditions to assess the efficiency of genebanks standard germination tests for predicting the performance of the seeds in the field. Three trials were conducted with 28 dry bean genotypes in open field and in growth chamber under low, moderate, and warm temperature. Morpho-agronomic data were used to evaluate the phenotypic performance of the different genotypes. Cool temperatures resulted in a reduction of the rate of emergence in the bean genotypes, however, emergence and early growth of bean could be under different genetic control and these processes need further research to be suitably modeled. Nine groups arose from the Principal Component Analysis (PCA) representing variation in emergence time and proportion of emergence in the controlled chamber and in the open field indicating a trend to lower emergence in large and extra-large seeded genotypes. Screening of seedling emergence and phenotypic response of the bean germplasm under a range of temperatures in controlled growth chambers and under field conditions showed several genotypes, as landraces 272, 501, 593, and the cultivar Borlotto, with stress-tolerance at emergence, and high yield potential that could be valuable genetic material for breeding programs. Additionally, the potential genetic erosion in genebanks was assessed. Regarding bean commercial traits, under low temperature at sowing time seed reached larger size, and crop yield was higher compared to warmer temperatures at the sowing time. Therefore, early sowing of bean is strongly recommended.

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“…The first stage was characterized by a low permeability of seed coat and slow imbibition of mass into the grains, which had been attributed to the high resistance to the mass flow into the grain by the seed coat (Hsu, ; Miano & Augusto, ; Oliveira et al, ; Piergiovanni, ). The seed coat permeability was dependent on its composition—such as the presence of callose, suberin and phenolic compounds (Kigel, Rosental, & Fait, ; Werker, Marbach, & Mayer, ), and moisture content (Hsu, ; Miano & Augusto, ; Oliveira et al, ; Piergiovanni, ).…”

Section: Resultsmentioning

confidence: 99%

Hydration kinetics of Carioca beans at different pHs

Oladele

Osundahunsi

Agbetoye

et al. 2018

J Food Process Engineering

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This work investigated the effect of pH of the soaking solutions on the water uptake of Carioca bean (Phaseolus vulgaris) at 25 °C. Four soaking solutions at pH levels of 3.1, 6.0 (natural value), 9.1, and 12.1 were prepared using dilute HCl or NaOH. The moisture content over the soaking time exhibited sigmoidal shapes, which were adequately modeled. The solutions with pH 3.1 and 9.1 converged to ~6.0 during the process, which were attributed to the solids leakage and ions diffusion through the grains. The equilibrium moisture and the hydration rate increased by changing the pH from 6.0 to 12.1, while the lag phase showed the opposite behavior. The pH of the soaking solutions affected the mass transfer behavior in both seed coat and cotyledon, demonstrating changes on both proteins and polysaccharides. This work demonstrated a simple approach for enhancing the hydration process of grains. Practical applications In the industries where grains are utilized, hydration process is an important process prior to several other steps like germination, cooking, components extraction, and fermentation. The process requires improvement because of slowness, discontinuity, and energy consumption. Our results showed that the water uptake characteristics of Carioca beans were greatly influenced by the pH of hydration solution, which could be a simple approach for enhancing the process. This work contributes to the explanation of the grain hydration behavior and possibly enhancing focusing on its optimization.

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Seed Physiology and Germination of Grain Legumes

Cited by 18 publications

References 206 publications

Enhancing mung bean hydration using the ultrasound technology: description of mechanisms and impact on its germination and main components

Enhancing mung bean hydration using the ultrasound technology: description of mechanisms and impact on its germination and main components

Seedling Emergence and Phenotypic Response of Common Bean Germplasm to Different Temperatures under Controlled Conditions and in Open Field

Hydration kinetics of Carioca beans at different pHs

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