Effect of various presowing treatments on seed germination of Heracleum candicans Wall. ex DC.: a high value medicinal plant

Joshi, M. R.; Dhar, Uppeandra

doi:10.15258/sst.2003.31.3.22

Cited by 19 publications

(16 citation statements)

References 11 publications

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“…These results highlight that the source (origin) of seed samples should always be taken into account when defining models of germination behaviour, especially in wild species with high degree of morphological and physiological variability. We agree with several authors Qaderi and Cavers 2000a,b;Joshi and Dhar 2003) that studies of seed germination from a single population of a species (as has been the case for Hypericum perforatum up to now) must be interpreted with caution and that information regarding germination behaviour of a wild species can only be obtained following individual population studies.…”

Section: Pretreatmentsupporting

confidence: 90%

Hypericum perforatum L. Seed Germination: Interpopulation Variationand Effect of Light, Temperature, Presowing Treatments and Seed Desiccation

Pérez-García

Huertas

Mora

et al. 2006

Genet Resour Crop Evol

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Germplasm conservation of medicinal plants is of increasing interest and, when possible, seed banking is the most efficient system for ex situ conservation of these plant genetic resources. Hypericum perforatum L. (St. John's wort, Guttiferae) is a medicinal plant with evidence of efficacy as an anti-depressant. The aim of this work was to increase knowledge of its seed germination behaviour by studying 68 wild populations. Seed germination tests were carried out at 25/15°C under a photoperiod of 16-h light/8-h darkness. Final germination percentages were highly variable depending on the accession, ranging from 6 to 98%. Similarly, germination rate (as expressed by T 50 values) varied significantly from 6.1 to 23.0 days. The effect of seed desiccation with silica gel on subsequent germination was also studied. The effect of two other incubation temperatures (15 and 25°C) and light (photoperiod or darkness) on seed germination was studied in several accessions. Temperature had no significant effect on final germination percentages. However, light significantly increased the germination of most but not all accessions assayed. Seeds from four accessions with low germination percentages were subjected to different presowing treatments that could increase germination: dry heat, hot water and gibberellic acid. Germination was promoted significantly by gibberellic acid in two of the four accessions assayed, but the thermal treatments did not enhance significantly the germination percentages. This study reveals that conclusions based on one population of Hypericum perforatum cannot characterize the germination behaviour for the entire species.

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Section: Pretreatmentsupporting

confidence: 90%

Hypericum perforatum L. Seed Germination: Interpopulation Variationand Effect of Light, Temperature, Presowing Treatments and Seed Desiccation

Pérez-García

Huertas

Mora

et al. 2006

Genet Resour Crop Evol

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“…Gunasekarn et al (2001) concluded that 100 ppm GA showed higher germination of nutmeg, these results tandem with present investigation. GA plays an important role to stimulate germination and lower down the difference in onset and final germination which promote to increase the hydrolytic activity (Joshi and Dhar, 2003;Manjkhola et al, 2003). Shivanna et al (2007) have noticed that GA and indole-3-acetic acid showed higher germination.…”

Section: Resultsmentioning

confidence: 99%

Effect of pre-sowing treatment on seed germination of Ixora coccinea L.

Shinde

Chavan²

2017

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Ixora coccinea L. is ornamentally and medicinally important coastal plant also associated with mangroves of Sindhudurg and Ratnagiri district. In the present study, seeds of I. coccinea were treated with cold water, 50°C hot water, germinator solution, and also 100, 200, and 500 ppm gibberellic acid (GA). Germination percentage was measured everyday until no germination was observed. Data were analyzed using analysis of variance and the significant mean difference in pair of treatments was analyzed using t-test. Seeds of I. coccinea treated with 100 ppm GA showed highest germination percentage, i.e., 90% followed by hot water treated seeds and it showed 85% germination. Seeds were treated with GA, hot water, germinator, and soaking in cold water showed significant difference in between treatments (P < 0.05). Overall, the results suggest that 100 ppm GA and hot water treatment used for enhance the germination of I. coccinea seeds.

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“…Final germination percentage (FGP) [18], mean germination time (MGT) [2], seed vigour index (VI) [19], mean daily germination (MDG) [20], Kotowski's coefficients of velocity (CoV) [20], germination Index (GI) [21], germination rate (GRw) [22], germination value (GV) [23], and Diavanshir and Pourbiek's germination value [GV(D)] [24] were calculated.…”

Section: In Vitro Seed Germinationmentioning

confidence: 99%

“…Stratification is needful in ending dormancy and hastening the germination of dormant seeds in some species of family Apiaceae [2,7,14,25]. Chilling (stratification) relieves primary dormancy of many species of Ferula [3,26,27].…”

Section: In Vitro Seed Germinationmentioning

confidence: 99%

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Conservation and Cultivation of Ferula jaeschkeana Vatke: A Species with Deep Complex Morphophysiological Dormancy

Yaqoob

Nawchoo

2015

Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci.

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Ferula jaeschkeana Vatke, an important medicinal plant of the Himalayan region, being threatened needs immediate conservation strategies. Keeping this in view studies on the germination of seeds and sprouting of vegetative propagules has been undertaken for the first time. At the time of dispersal, F. jaeschkeana seeds are dormant and have under-developed embryos. The aims of the present work were to determine the requirements for germination and overcoming dormancy and to characterize the type of seed dormancy. The seeds of F. jaeschkeana have deep complex morpho-physiological dormancy. Present study revealed that final germination percentage, mean daily germination, seed vigour index, germination index, germination rate and germination value were highest (53.3 %, 0.88, 3.67, 0.13, 0.88 and 1.02, respectively) when 200 ppm kinetin and dry stratification (60 days) were applied together. The decline in MGT up to 36.18 days and highest percentage survival (87.9 ± 7.08) were also observed in the same treatment. This treatment is thus recommended for promoting the germination process of F. jaeschkeana seeds. Maximum seed germination (62.0 ± 11.54 %) at 1 in. depth was found in seeds presoaked in kinetin (100 ppm) for 24 h in media of sand:soil (2:1). In case of root tuber cuttings, 500 ppm gibberellic acid showed significantly high sprouting (89.70 ± 0.78 and 69.14 ± 0.82 %, respectively) and rooting percentage (78.78 ± 1.13 and 55.56 ± 0.95 %, respectively) in case of both perennial and biennial plants. Likewise minimum time taken for sprouting was also observed in the same treatment in case of both perennial (10.0 ± 1 days) and biennial plants (11.33 ± 2.3 days).

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Effect of various presowing treatments on seed germination of Heracleum candicans Wall. ex DC.: a high value medicinal plant

Cited by 19 publications

References 11 publications

Hypericum perforatum L. Seed Germination: Interpopulation Variationand Effect of Light, Temperature, Presowing Treatments and Seed Desiccation

Hypericum perforatum L. Seed Germination: Interpopulation Variationand Effect of Light, Temperature, Presowing Treatments and Seed Desiccation

Effect of pre-sowing treatment on seed germination of Ixora coccinea L.

Conservation and Cultivation of Ferula jaeschkeana Vatke: A Species with Deep Complex Morphophysiological Dormancy

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