scholarly journals Seed germination behaviour of six medicinal plants from Bangladesh

2014 ◽  
Vol 21 (1) ◽  
pp. 71-76 ◽  
Author(s):  
Aleya Ferdousi ◽  
Md. Oliur Rahman ◽  
Md. Abul Hassan
Keyword(s):  
Seed Germination ◽  
Medicinal Plants ◽  
Stem Cutting ◽  
Psoralea Corylifolia ◽  
Adenanthera Pavonina ◽  
Murraya Paniculata ◽  
Helicteres Isora ◽  
Plant Taxon ◽  
Germination Behaviour

This paper focuses on seed germination of six indigenous medicinal plants of Bangladesh, namely Adenanthera pavonina L., Helicteres isora L., Murraya paniculata (L.) Jack, Psoralea corylifolia L., Uraria lagopodioides (L.) Desv. and U. picta (Jacq.) Desv. ex DC. The minimum days taken to germinate seeds in Adenanthera pavonina L., Murraya paniculata (L.) Jack, Psoralea corylifolia L., Uraria lagopodioides (L.) Desv. and U. picta (Jacq.) Desv. ex DC. are 12, 36,  10, 39 and 14, respectively. Seeds were not germinated in Helicteres isora L. indicating that seeds are not suitable for propagation, however, propagation through stem cutting in this species revealed that plants flowers and set fruits in the same year and take only six to seven months. Epigeal type of seed germination was observed in all cases.DOI: http://dx.doi.org/10.3329/bjpt.v21i1.19270Bangladesh J. Plant Taxon. 21(1): 71-76, 2014 (June)

scholarly journals Seed germination of two medicinal plants: Desmodium pulchellum (L.) Benth. and D. Triflorum (L.) DC.

2012 ◽  
Vol 19 (2) ◽  
pp. 209-212
Author(s):  
Md. Zahidur Rahman ◽  
M. Oliur Rahman ◽  
Md. Abul Hassan
Keyword(s):  
Seed Germination ◽  
Medicinal Plants ◽  
Plant Taxon

DOI: http://dx.doi.org/10.3329/bjpt.v19i2.13138 Bangladesh J. Plant Taxon. 19(2): 209-212, 2012 (December)

scholarly journals Reproductive biology of three medicinal plants

1970 ◽  
Vol 17 (1) ◽  
pp. 69-78
Author(s):  
Shamim Ara Liza ◽  
Md. Oliur Rahman ◽  
Md. Zashim Uddin ◽  
Md. Abul Hassan ◽  
Momtaz Begum
Keyword(s):  
Seed Germination ◽  
Medicinal Plants ◽  
Reproductive Biology ◽  
Fruit Production ◽  
Flower Morphology ◽  
Asclepias Curassavica ◽  
Scoparia Dulcis ◽  
Pollination Mechanisms ◽  
Plant Taxon ◽  
Clerodendrum Viscosum

This paper presents the flower morphology, pollination mechanisms and seed germination of three indigenous medicinal plants of Bangladesh namely, Asclepias curassavica L., Clerodendrum viscosum Vent. and Scoparia dulcis L. The minimum days taken for seed germination in Asclepias curassavica, Clerodendrum viscosum and Scoparia dulcis are 6, 14 and 9, respectively. Epigeal type of seed germination has been noted in Asclepias curassavica and Scoparia dulcis, whereas hypogeal type of seed germination has been found in Clerodendrum viscosum. Fruit production is highest in Scoparia dulcis among the species studied and a maximum of 304 seeds are produced per fruit in it. Maximum 108 seeds are produced per fruit in Asclepias curassavica. Among the species investigated Asclepias curassavica and Clerodendrum viscosum are cross-pollinated, and Scoparia dulcis is self-pollinated. Butterflies, bees and ants are noted to be the pollinators in Asclepias curassavica and in Clerodendrum viscosum black ants, butterflies and long tongue hawk moths are the pollinators.Keywords: Taxonomy; pollination; seed germination; Asclepias curassavica L.; Clerodendrum viscosum Vent.; Scoparia dulcis L.DOI: 10.3329/bjpt.v17i1.5391Bangladesh J. Plant Taxon. 17(1): 69-78, 2010 (June)

scholarly journals Opportunistic Germination Behaviour of Gypsophila (Caryophyllaceae) in Two Priority Habitats from Semi-arid Mediterranean Steppes

2011 ◽  
Vol 39 (1) ◽  
pp. 18 ◽  
Author(s):  
Felix MORUNO ◽  
Pilar SORIANO ◽  
Oscar VICENTE ◽  
Monica BOSCAIU ◽  
Elena ESTRELLES
Keyword(s):  
Seed Germination ◽  
Climatic Conditions ◽  
Thermal Time ◽  
Distribution Area ◽  
Base Temperature ◽  
Additional Information ◽  
High Viability ◽  
Germination Behaviour ◽  
Alternating Temperature

Gypsophila tomentosa and G. struthium are closely related species, characteristic of two European priority habitats, salt and gypsum inland steppes, respectively. Germination strategies of the two taxa were investigated in plants from two nearby populations, growing under the same climatic conditions but on different types of soil, and belonging to different plant communities. Their germination patterns were studied at five constant temperatures in darkness: 5oC, 10oC, 15oC, 20oC and 25oC, and the base temperature and the thermal time requirement were calculated. As the distribution area of both species is subjected to a Mediterranean continental climate with significant differences between day and night, the possible preferences for an alternating temperature regime (25/10oC) were contrasted, as well as the influence of cold stratification and freezing. The effects on seed germination of light at constant 20oC and a 12/12 h photoperiod were also compared in the two species. The main conclusions of the work are the similarity of behaviour of both species, with an absence of seed dormancy, their opportunistic germination strategy, and water availability as the principal limitation to seed germination and plant establishment. The base temperature and thermal time indicate higher competitiveness of G. struthium at low temperatures, but seed germination of G. tomentosa is the most efficient at temperatures higher than 13.3oC. Optimal temperature and illumination conditions for nursery propagation depend on the species. The high viability of seeds observed after freezing prove the orthodox character of these seeds, providing additional information for long term seed conservation procedures.

scholarly journals Effect of Osmotic and Matric Potentials on the Availability of Water for Seed Germination

1971 ◽  
Vol 24 (3) ◽  
pp. 423 ◽  
Author(s):  
JR Mcwilliam ◽  
PJ Phlllips
Keyword(s):  
Soil Moisture ◽  
Seed Germination ◽  
Osmotic Stress ◽  
Soil Water ◽  
Seed Coat ◽  
Moisture Diffusivity ◽  
Matric Potential ◽  
Water Potentials ◽  
Germination Behaviour ◽  
Dry Soil

Under special conditions where soil-moisture diffusivity and seed-soil contact are non-limiting, the osmotic and matric potentials of the substrate were found to be equivalent in their effect on the germination of seeds of ryegrass and dehulled phalaris over a range of water potentials from 0 to -15 bars. However, with intact phalaris seeds it appears that the seed coat constitutes a large resistance to the absorption of soil water, and under these conditions the equivalence between osmotic and matric potential no longer holds, and results of germination under osmotic stress must be used with caution in predicting the germination behaviour of seeds in dry soil.

scholarly journals Endophytes from medicinal plants and their potential for producing indole acetic acid, improving seed germination and mitigating oxidative stress

2017 ◽  
Vol 18 (2) ◽  
pp. 125-137 ◽  
Author(s):  
Abdul Latif Khan ◽  
Syed Abdullah Gilani ◽  
Muhammad Waqas ◽  
Khadija Al-Hosni ◽  
Salima Al-Khiziri ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Acetic Acid ◽  
Seed Germination ◽  
Medicinal Plants ◽  
Indole Acetic Acid

Water potential of cherry tomato (Lycopersicon esculentum Mill.) placenta and seed germination in response to desiccation during fruit development

2004 ◽  
Vol 14 (2) ◽  
pp. 249-257
Author(s):  
Albert T. Modi ◽  
Belinda J. White
Keyword(s):  
Seed Germination ◽  
Lycopersicon Esculentum ◽  
Water Potential ◽  
Amylase Activity ◽  
Cherry Tomato ◽  
Stages Of Development ◽  
Stage Of Development ◽  
Activity Promotion ◽  
Germination Behaviour ◽  
Seed Water Content

Cherry tomato (Lycopersicon esculentum Mill.) seeds harvested from fruits at four stages of development [2, 4, 6 and 8 weeks after flowering (WAF)] were washed (1% HCl) and germinated after 72 h of desiccation at 20°C, and 76%, 49% or 12% RH. Seed α-amylase activity was determined at each stage of development and correlated with seed germination. Desiccation at 76% and 49% RH had no significant effect on the germination of seeds at 4, 6 and 8 WAF, whereas it improved germination of seeds at 2 WAF. Low RH (12%) significantly reduced seed germination at all stages of development. There was a positive correlation (r = 0.68, P ≤ 0.05) between germination and α-amylase activity during seed development. Scanning electron microscopy also revealed a correlation between starch grain occurrence in the endosperm and α-amylase activity. Placenta water potential decreased with fruit and seed maturation, and correlated negatively with improved seed germination and α-amylase activity. Promotion of seed germination by desiccation in developing cherry tomato seeds was lost 4 weeks prior to mass maturity (80 ± 3% seed water content and –2.3 ± 0.1 MPa placenta water potential). It is proposed that the water potential differential between the placenta and the seeds influences α-amylase activity and germination behaviour during development.

scholarly journals Ethno-medico-botanical knowledge from Kaukhali proper and Betbunia of Rangamati District

1970 ◽  
Vol 13 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Mohammed Yusuf ◽  
Md Abdul Wahab ◽  
Jasim Uddin Chowdhury ◽  
Jaripa Begum
Keyword(s):  
Medicinal Plants ◽  
Key Words ◽  
Botanical Knowledge ◽  
Plant Taxon

A survey was carried out between July 2001 and June 2002 in Kaukhali proper and Betbunia area of Rangamati district to document the medicinal plants of that area and their uses. During this work 34 species representing 23 genera and 17 families were found, which are used by the Chakma and Marma tribes and the Bangalis living there for the treatment of 31 diseases. Botanical and tribal names of the plants, parts used, name of the diseases, and name of the users have been mentioned. Key words: Ethno-medico-botany, Kaukhali, Betbunia, Rangamati DOI: 10.3329/bjpt.v13i1.594 Bangladesh J. Plant Taxon. 13(1): 55-61, 2006 (June)

Study of seed germination behaviour of Solanum nigrum L.

2019 ◽  
Vol 98 (1and2) ◽  
pp. 85 ◽  
Author(s):  
Yasmin Bano ◽  
Shamim Ahmad ◽  
S. P. Alam
Keyword(s):  
Seed Germination ◽  
Solanum Nigrum ◽  
Solanum Nigrum L ◽  
Germination Behaviour

scholarly journals Seed germination response of Indian wild pear (Pyrus pashia) to gibberellic acid treatment and cold storage

2021 ◽  
Vol 13 (4) ◽  
pp. 11044
Author(s):  
Manisha THAPLIYAL ◽  
Namitha N. KALIYATHAN ◽  
Kanupriya RATHORE
Keyword(s):  
Seed Germination ◽  
Cold Storage ◽  
Germplasm Conservation ◽  
Dormancy Breaking ◽  
Seed Sources ◽  
Germination Response ◽  
Mean Germination Time ◽  
Germination Behaviour ◽  
Pyrus Pashia ◽  
Gibberellic Acid Treatment

Knowledge of seed germination behaviour of different seed sources of tree species is useful in selecting the most responsive and adaptive ones for propagation and germplasm conservation. The wild Himalayan pear (Pyrus pashia Buch-Ham ex D. Don) produces highly nutritious edible fruits that are consumed by local communities. The populations of the species are threatened due to exploitation and lack of adequate conservation programmes. The study was conducted to examine the germination response of P. pashia seeds from two sources (S1-Champawat and S2-Pithoragarh) in Uttarakhand state of India, to different GA3 treatment and also to assess the viability and longevity of the seeds in cold storage (5 °C) for three years. In both sources germination percent (GP) increased significantly under GA3 treatment and speed of germination was also enhanced (reduction in mean germination time). In Source, 1 GP increased under all GA3 application, highest being 94% under GA3 500 ppm treatment. In Source 2, GP of seeds doubled under 100 ppm GA3 treatment while its higher concentrations did not improve the germination. However, the differences observed in germination between the seed sources could be due to differences in the dormancy levels and/or sensitivity to dormancy breaking elements across their geographical range. Thus, exogenous application of GA3 is suggested for enhancing the germination in seeds of P. pashia. Seeds responded to cold storage by increased germination with duration, i.e. highest after three years in storage, indicating that the seeds got the required chilling treatment for overcoming dormancy.

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