【摘 要】
：
We used pre-sowing treatments viz., soaking seeds in concentrated sulphuric acid(CSA), gibberellic acid(GA), combined treatment of CSA + GA and mechanical scari
【机 构】
：
Department of Botany, Goa University, Goa 403206, India,
【出 处】
：
Journal of Forestry Research
论文部分内容阅读
We used pre-sowing treatments viz., soaking seeds in concentrated sulphuric acid(CSA), gibberellic acid(GA), combined treatment of CSA + GA and mechanical scarification to overcome seed dormancy and enhance synchronous germination of Macaranga peltata seeds. We analysed percent seed germination data by logistic regression and confirmed that except in GA treatment, time and acid concentration together were crucial for enhancing germination. The combination treatment of CSA and GA resulted in higher percent germination(up to 74%) than either treatment used separately, but produced defective seedlings(26%). Mechanical scarification of seed coat had the greatest impact in enhancing germination(78%) and reducing imbibition time(6 days) against the control(0%). Germination studies and SEM analysis confirmed that seed germination in M. peltata was inhibited by seed coat dormancy.
We used pre-sowing treatments viz., Soaking seeds in concentrated sulphuric acid (CSA), gibberellic acid (GA), combined treatment of CSA + GA and mechanical scarification to overcome seed dormancy and enhance synchronous germination of Macaranga peltata seeds. The combination treatment of CSA and GA resulted in higher percent germination (up to 74%) than either treatment used separately, but produced defective seedlings (26%). Mechanical scarification of seed coat had the greatest impact in enhancing germination (78%) and reducing imbibition time (6 days) against the control (0%). Germination studies and SEM analysis confirmed that seed germination in M. peltata was inhibited by seed coat dormancy.
其他文献
Carbon (C) dynamics are central to understanding ecosystem restoration effects within the context of Grain for Green Project (GGP). GGP stared in China since 20
Calorific value of plants is an important parameter for evaluating and indexing material cycles and energy conversion in forest ecosystems. Based on mensuration
This work quantified the total carbon and 12 other sediment characteristics at 10 soil depths, in planted and or natural mangrove forests in comparison with non
Dwarf mistletoes are parasitic flowering plants that infect conifers, resulting in substantial loss of growth and mortality. Recently, forest managers in Iran a
We estimated water-use efficiency and potential photosyn-thetic assimilation of Holm oak (Quercus ilex L.) on slopes of NW and SW aspects in a replicated field
The purpose of this study was to characterize the land use, vegetation structure, and diversity in the Barnowpara Sanctuary, Raipur district, Chhattisgarh, Indi
Deforestation occurs at an alarming rate in upland watersheds of Bangladesh and has many detrimental effects on the environment. This study reports the effects
Soil organic carbon(SOC) is an effective indicator of soil fertility and productivity, and it varies spatially and temporally in relation to other soil properti
A trial of Avicennia officinalis L. with five different spacings was conducted in the newly accreted lands along the western coastline (Patuakhali district) of
We studied moist deciduous forests of Chhattisgarh, India (1) to assess the effect of four levels of historic wildland fire frequency (high, medium, low, and no