Enhancement of seed germination in Macaranga peltata for use in tropical forest restoration

Rodrigues, Cassie R.; Rodrigues, B.F.

doi:10.1007/s11676-014-0536-0

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…This indicates that the hard seed coat caused a major physical restraint to seed germination. This observation is in conformity with previous reports on different hard seed coat perennials (Morris et al 2000;Wang et al 2008;Dewir et al 2011;Rodrigues and Rodrigues 2014). In general, seeds of genus Elaeocarpus have hard seed coat that restricts radicle protrusion.…”

Section: Populationsupporting

confidence: 93%

Assessment of different pretreatments to breakage dormancy and improve the seed germination in Elaeocarpus serratus L. - an underutilized multipurpose fruit tree from South India

Raji

Siril

2018

Forest Science and Technology

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The seeds of Elaeocarpus serratus, a tropical underutilized fruit tree are characterized by hard seed coat and consequent poor water uptake and low germination. To improve the regeneration through seeds, various parameters such as viability of seeds, water uptake, and effect of seed mass on germination and pretreatments were performed using a completely randomized design (CRD). Tetrazolium (TZ) test was conducted using fresh, mature seeds revealed 50 ± 2.56% mean viability. Seeds of different weight classes showed similar pattern of water uptake and the saturation level was achieved at 60 hrs of soaking. Seeds belong to weight class 2.6-3.5g were germinated (12.5 ± 1.26%) with 175 ± 1.75 days (d) of mean time taken for germination (MTG). Germination capacity of seeds varied significantly among different populations and Varkala population gave 12.5 ± 1.1% germination with 174.6 ± 2.5 d MTG. Among various seed treatments, mechanical scarification was superior in germination and significant reduction in MTG (p 0.05). The mechanical scarification by complete removal of seed coat resulted in 49.2 ± 1.52% germination within a short period of time (9.52 ± 0.89 d MTG). However, the complete removal of seed coat without damaging to embryo is a difficult task. An alternate treatment (Mechanical scarification II) by making cracks on nut faces vertically followed by soaking in distilled water for 24 hrs gave 48.4 ± 1.73% germination with significantly reduced MTG (12.14 ± 0.56 d) over unsoaked, untreated control (6.5 ± 1.84% germination and 197.18 ± 1.79 d MTG; p 0.05). This treatment (Mechanical scarification II) is therefore recommended for E. serratus seeds as it can adopt easily and can achieve 7 fold increases in germination over control. The recorded germination through mechanical scarification is in tune with realized viability percentage of the seeds.

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Section: Populationsupporting

confidence: 93%

Assessment of different pretreatments to breakage dormancy and improve the seed germination in Elaeocarpus serratus L. - an underutilized multipurpose fruit tree from South India

Raji

Siril

2018

Forest Science and Technology

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“…However, the present study revealed that the concentrated sulphuric acid treatment for 30 min shall reduce germination period (6 days) and increase germination rate (100%). An earlier study on Macaranga peltata revealed that combination of concentrated sulphuric acid and gibberellic acid resulted in improved germination rate [32].…”

Section: Discussionmentioning

confidence: 98%

Seed Characteristics and Germination Behaviour ofBauhinia malabaricaRoxb.

Pillai¹,

Viswanath²,

Hrideek³

et al. 2020

Horticultural Crops

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Malabar Bauhinia (Bauhinia malabarica) is a native ornamental species belonging to the family Fabaceae, distributed throughout India in semievergreen and moist deciduous forests and in gardens. Information regarding seed characteristics and seed handling of the species is meagre. This study describes seed characteristics, germination behaviour and pretreatment for enhancing seed germination of B. malabarica. Treating the seeds with concentrated sulphuric acid for 30 min reduced germination duration up to 6 days and increased germination rate up to 100% against 22 days of germination duration and 10% germination in seeds without treatment. The results of this study are helpful for conservation and nursery practices of B. malabarica.

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“…The reports suggested that the removal of sarcotesta (outer seed coat) facilitated germination, but there was still poor and erratic germination, particularly at various temperature ranges; while the seeds with intact sarcotesta had extremely poor germination [18]. To overcome the impermeability of seed covering layer(s), pre-sowing treatments such as acid scarification, boiling/hot water treatment, and mechanical scarification have been employed to enhance seed germination [19]. Using 3D X-ray micro-tomography (micro-T) is an advanced technique for the three-dimensional visualization of internal plant structures [20].…”

Section: Introductionmentioning

confidence: 99%

Pre-Sowing Treatments, Seed Components and Water Imbibition Aids Seed Germination of Gloriosa superba

Mahajan

Shinde

Torris

et al. 2023

Seeds

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Gloriosa superba L. is a horticulturally and medicinally important plant. Its seeds have poor, erratic, and deferred germination. The detailed seed structure components and water imbibition mechanism facilitating the process of seed germination in G. superba remain unexplored. Therefore, it is essential to develop methods to ensure consistent and enhanced seed germination in G. superba. Various pre-sowing treatments along with the Brunauer‒Emmett‒Teller (BET) surface area analysis and 3D X-ray micro-tomography (micro-T) were employed to elucidate seed structure components, porosity network, and the water imbibition mechanism during germination in G. superba. The study revealed that consistent and significantly improved seed germination (>85%) was observed using the pre-sowing treatment mechanical scarification followed by 24 h water soaking in G. superba. BET and micro-T showed that the tegmen of the seed coat exhibited porosity (21%) with a well-connected porosity network (17.50%) that helped in water movement through hilum, which was confirmed by phosphotungstic acid staining. However, the sarcotesta and endosperm were water-impermeable due to their negligible porosity. Multidisciplinary techniques such as BET and micro-T along with conventional methodologies can be employed to address the seed coat structure, porosity, and water imbibition mechanism aiding seed germination. Mechanical scarification enabled the water to penetrate internal seed layers through the permeable tegmen via the reticulate pore network, which significantly improved seed germination. The developed seed germination method can produce a large number of plants in less time and conserve the natural populations of this high-value medicinally important species.

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Enhancement of seed germination in Macaranga peltata for use in tropical forest restoration

Cited by 6 publications

References 13 publications

Assessment of different pretreatments to breakage dormancy and improve the seed germination in Elaeocarpus serratus L. - an underutilized multipurpose fruit tree from South India

Assessment of different pretreatments to breakage dormancy and improve the seed germination in Elaeocarpus serratus L. - an underutilized multipurpose fruit tree from South India

Seed Characteristics and Germination Behaviour ofBauhinia malabaricaRoxb.

Pre-Sowing Treatments, Seed Components and Water Imbibition Aids Seed Germination of Gloriosa superba

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