Impact of hydropriming duration on seed germination and emergence indices of sweet basil

Adinde, J. O.; Agu, C. J.; Uche, O. J.; Omeje, T. E.

doi:10.31248/jasp2019.177

Cited by 3 publications

(2 citation statements)

References 27 publications

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“… ▪ Mean Germination time = (Σni x di)/Σni [ 39 ]. ▪ Days to 50% germination were calculated from the date of sowing to the date of 50% seeds germination by daily counting germinated seeds / Petri dish [ 41 ]. ▪ Coefficient velocity of germination = (N/(Σni x di)) × 100 [ 42 ].…”

Section: Methodsmentioning

confidence: 99%

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Optimisation of indole acetic acid production by Neopestalotiopsis aotearoa endophyte isolated from Thymus vulgaris and its impact on seed germination of Ocimum basilicum

Abdelhamid,

Abo Elsoud,

El-Baz

et al. 2024

BMC Biotechnol

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Background Microbial growth during plant tissue culture is a common problem that causes significant losses in the plant micro-propagation system. Most of these endophytic microbes have the ability to propagate through horizontal and vertical transmission. On the one hand, these microbes provide a rich source of several beneficial metabolites. Results The present study reports on the isolation of fungal species from different in vitro medicinal plants (i.e., Breynia disticha major, Breynia disticha, Duranta plumieri, Thymus vulgaris, Salvia officinalis, Rosmarinus officinalis, and Ocimum basilicum l) cultures. These species were tested for their indole acetic acid (IAA) production capability. The most effective species for IAA production was that isolated from Thymus vulgaris plant (11.16 µg/mL) followed by that isolated from sweet basil plant (8.78 µg/mL). On screening for maximum IAA productivity, medium, “MOS + tryptophan” was chosen that gave 18.02 μg/mL. The macroscopic, microscopic examination and the 18S rRNA sequence analysis indicated that the isolate that given code T4 was identified as Neopestalotiopsis aotearoa (T4). The production of IAA by N. aotearoa was statistically modeled using the Box-Behnken design and optimized for maximum level, reaching 63.13 µg/mL. Also, IAA extract was administered to sweet basil seeds in vitro to determine its effect on plant growth traits. All concentrations of IAA extract boosted germination parameters as compared to controls, and 100 ppm of IAA extract exhibited a significant growth promotion effect for all seed germination measurements. Conclusions The IAA produced from N. aotearoa (T4) demonstrated an essential role in the enhancement of sweet basil (Ocimum basilicum) growth, suggesting that it can be employed to promote the plant development while lowering the deleterious effect of using synthetic compounds in the environment.

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Section: Methodsmentioning

confidence: 99%

“…▪ Days to 50% germination were calculated from the date of sowing to the date of 50% seeds germination by daily counting germinated seeds / Petri dish [ 41 ].…”

Section: Methodsmentioning

confidence: 99%

Optimisation of indole acetic acid production by Neopestalotiopsis aotearoa endophyte isolated from Thymus vulgaris and its impact on seed germination of Ocimum basilicum

Abdelhamid,

Abo Elsoud,

El-Baz

et al. 2024

BMC Biotechnol

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Dynamics of the Ocimum basilicum L. Germination under Seed Priming Assessed by an Updated BBCH Scale

et al. 2022

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Germination of the medicinal and aromatic plant basil raises interesting questions due to its no seed periodicity and dormancy demand, and the seed priming could help to assure the permanent needs for this herb. The study aimed to provide an adapted BBCH (Biologische Bundesanstalt Bundessortenamt and CHemical industry) scale for the germination secondary stages of sweet basil Ocimum basilicum L. (var. MVSt). A standardized germination test was performed with hydropriming, electric field, and magnetic field as priming methods to assess the changes in the secondary stages of germination. The time range for each basil secondary stage was recorded and added to the adapted BBCH, to highlight the daily secondary stage changes. All the seed priming methods increased the germination capacity with 2–3% compared with the control, with the highest value for electropriming. The seed priming methods studied improved the germination and changed the pattern of secondary stages in the BBCH scale. The germination energy was set to more than 90% in all primed seeds, with a maximum of 91.75% in the magnetic field. The time needed for 50% germination of seeds was set to 6.5 days and 90% germinated seeds were recorded after 11.7 days. The 09a BBCH lasted for 9 days in control and hydropriming, 10 days in electric field conditions and 7 days for magnetoprimed seeds.

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Seed Priming: A Feasible Strategy to Enhance Drought Tolerance in Crop Plants

Vishvanathan

Geetha

Kumutha

et al. 2020

IJMS

172

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Drought is a serious threat to the farming community, biasing the crop productivity in arid and semi-arid regions of the world. Drought adversely affects seed germination, plant growth, and development via non-normal physiological processes. Plants generally acclimatize to drought stress through various tolerance mechanisms, but the changes in global climate and modern agricultural systems have further worsened the crop productivity. In order to increase the production and productivity, several strategies such as the breeding of tolerant varieties and exogenous application of growth regulators, osmoprotectants, and plant mineral nutrients are followed to mitigate the effects of drought stress. Nevertheless, the complex nature of drought stress makes these strategies ineffective in benefiting the farming community. Seed priming is an alternative, low-cost, and feasible technique, which can improve drought stress tolerance through enhanced and advanced seed germination. Primed seeds can retain the memory of previous stress and enable protection against oxidative stress through earlier activation of the cellular defense mechanism, reduced imbibition time, upsurge of germination promoters, and osmotic regulation. However, a better understanding of the metabolic events during the priming treatment is needed to use this technology in a more efficient way. Interestingly, the review highlights the morphological, physiological, biochemical, and molecular responses of seed priming for enhancing the drought tolerance in crop plants. Furthermore, the challenges and opportunities associated with various priming methods are also addressed side-by-side to enable the use of this simple and cost-efficient technique in a more efficient manner.

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Impact of hydropriming duration on seed germination and emergence indices of sweet basil

Cited by 3 publications

References 27 publications

Optimisation of indole acetic acid production by Neopestalotiopsis aotearoa endophyte isolated from Thymus vulgaris and its impact on seed germination of Ocimum basilicum

Optimisation of indole acetic acid production by Neopestalotiopsis aotearoa endophyte isolated from Thymus vulgaris and its impact on seed germination of Ocimum basilicum

Dynamics of the Ocimum basilicum L. Germination under Seed Priming Assessed by an Updated BBCH Scale

Seed Priming: A Feasible Strategy to Enhance Drought Tolerance in Crop Plants

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