Tropical Plant Research最新文献

Slenderness coefficient models for tree species in Omo biosphere reserve, South-western Nigeria 尼日利亚西南部Omo生物圈保护区树种长细系数模型

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.075

A. Oladoye, P. Ige, Q. Onilude, Z. T. Animashaun

{"title":"Slenderness coefficient models for tree species in Omo biosphere reserve, South-western Nigeria","authors":"A. Oladoye, P. Ige, Q. Onilude, Z. T. Animashaun","doi":"10.22271/TPR.2020.V7.I3.075","DOIUrl":"https://doi.org/10.22271/TPR.2020.V7.I3.075","url":null,"abstract":"This study was carried out to aid the prediction of tree slenderness coefficient using non-linear regression models for tree species in Omo Biosphere Reserve, Southwestern Nigeria. Systematic line transect design was adopted for the study. Three transects were laid with four plots on each transect at alternate positions which made a total of 12 sample plots (50 m × 50 m) in the study area. Diameter at breast height (DBH), diameter at the top, diameter at the middle and diameter at the base as well as total height and merchantable height of all trees were measured. Descriptive statistics, Pearson’s correlation and regression analysis were adopted for the study. The study showed that about 23.5% of the trees in the study area are susceptible to wind-throw damage. Correlation analysis revealed that DBH is a better predictor of Slenderness coefficient than other tree growth characteristics. Six non-linear models were adopted for the tree slenderness coefficient prediction. The best models were selected based on the highest Adj.R2, lowest AIC and SEE values. Normal logarithmic equation SLC = 30.72 + (-41.21) In(D) was selected as the candidate model for the pooled data. The same candidate model (Natural logarithm) was selected for both the Desplatsia lutea and Strombosia pustulata species with the equation SLC = -0.04 + (-63.82) In(D) and SLC = 22.12 + (-51.40) In(D) respectively while exponential model with equation SLC = 170.94e(-1.93) was selected for Sterculia rhinopetala. These equations were recommended for predicting slenderness coefficient for each of the tree species in Omo Biosphere with apparently valid potentials for enhancing reasonable quantification of the stands’ stability.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85819987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Amaryllids of Andhra Pradesh, India 印度安得拉邦的红宝石

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.073

R. Prameela, M. Venkaiah, J. Swamy, J. Prakasarao

引用次数: 1

Comparative effect of sodium chloride and sodium sulfate on the biomass and quantitative changes in starch, protein and total soluble sugar in pea seeds (Pisum sativum L.) 氯化钠和硫酸钠对豌豆种子生物量及淀粉、蛋白质和总可溶性糖含量变化的影响

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.080

F. Rehman, Sumaira Khan, I. Tahir, A. Shaheen

{"title":"Comparative effect of sodium chloride and sodium sulfate on the biomass and quantitative changes in starch, protein and total soluble sugar in pea seeds (Pisum sativum L.)","authors":"F. Rehman, Sumaira Khan, I. Tahir, A. Shaheen","doi":"10.22271/TPR.2020.V7.I3.080","DOIUrl":"https://doi.org/10.22271/TPR.2020.V7.I3.080","url":null,"abstract":"The nature of the soil is a very important factor in the growth and development of a crop. Crop plants suffer a decline in growth and yield, when exposed to the saline condition. Pea considers one of the main leguminous crops, due to its ability to produce significant quantities of protein, carbohydrates and nutrient-rich seeds. Plants were subjected to four salt treatments, 4, 8, 12 and 16 mmhos cm-1 of sodium chloride and sodium sulfate and the biomass and biochemical responses were measured. All growth attributes such as stem, root and leaf fresh and dry weight decrease with the increased salinities doses. Salt treatments were no significant effects on the biomass and quantitative changes in starch, protein and soluble sugar in seeds of pea. But it was noted that the starch contents were much reduced in 16 mmhos cm-1, the salinity level of sodium chloride and sodium sulfate as compared to control. The protein content and sugar content value were increased in a higher concentration of sodium chloride and sodium sulfate, when compared to control in Pea, CV. Azad P-1. The proline content increased with salt stress up to 8 mmhos cm-1 in CV-Azad P-1. It was also observed that the high dose of sodium sulfate is declined biomass and quantitative changes in starch, than that of sodium chloride solution in pea seeds.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90220235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of propagation protocol for the endangered species Phlomoides superba (Royle ex Benth.) Kamelin & Makhm. 濒危物种Phlomoides superba (Royle ex Benth.)繁殖方案的制定Kamelin & Makhm。

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.066

A. Srivastava

引用次数: 1

Seasonal studies on the carbohydrate content of some marine macroalgae in Gulf of Mannar coastal region, India 印度马纳尔湾沿海地区一些大型海藻碳水化合物含量的季节性研究

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.086

K. Murugaiyan

{"title":"Seasonal studies on the carbohydrate content of some marine macroalgae in Gulf of Mannar coastal region, India","authors":"K. Murugaiyan","doi":"10.22271/TPR.2020.V7.I3.086","DOIUrl":"https://doi.org/10.22271/TPR.2020.V7.I3.086","url":null,"abstract":"Carbohydrates were analysed in 40 species of marine macroalgae belonging to three classes collected at seasonal intervals between April 2018 to March 2019 from the intertidal habitats in Gulf of manner coastal regions.Among the 40 dominant seaweeds 11 species belonged to Chlorophyceae, 13 species to Phaeophyceae and the remaining 16 species to Rhodophyceae. The carbohydrate content of seaweeds varied from 4.50±0.12 to 72.25±3.15 % of DW during the summer season. The percentage of carbohydrate content was maximum in Gracilaria verrucosa (72.25±3.15 % of DW) during the summer season and minimum in Turbinaria ornata (4.50±0.12 DW) during the summer season. The carbohydrate content of seaweeds varied from 5.50±0.17 to 48.38±3.04 % of DW during the pre-monsoon season. The maximum values were observed in Gracilaria corticata var. corticata the minimum content was observed in Padina pavonica. The carbohydrate content of seaweeds varied from 4.83±0.12 to 58.18±4.56 % of DW during the monsoon season. The maximum value was observed in Gracilaria corticata var corticata and the minimum was in Padina pavonica. The carbohydrate content of seaweeds varied from 7.36±0.16 to 67.25±2.41 % of DW during the post-monsoon season. The maximum value was observed in Acanthophora spicifera and the minimum content was observed in Sargassum ilicifolium.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83899837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Qualitative and quantitative evaluation of the phytochemical constituents of three wood species in Ogun state, Nigeria 尼日利亚奥贡州三种木材植物化学成分的定性和定量评价

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.078

K. M. Ogunjobi, S. Abdulwahab, O. F. Gakenou, O. E. Thompson, O. Olorunfemi

{"title":"Qualitative and quantitative evaluation of the phytochemical constituents of three wood species in Ogun state, Nigeria","authors":"K. M. Ogunjobi, S. Abdulwahab, O. F. Gakenou, O. E. Thompson, O. Olorunfemi","doi":"10.22271/TPR.2020.V7.I3.078","DOIUrl":"https://doi.org/10.22271/TPR.2020.V7.I3.078","url":null,"abstract":"Studies on the phytochemicals of the stem wood of tropical trees are scarce, despite its importance to plant protection and preservation as most researches focused on their leaves and fruits. This research work aimed to qualitatively and quantitatively analyze the phytochemicals present in the stem wood of Gmelina arborea, Tectona grandis and Anogeissus leiocarpus. Freshly sawn timbers were collected from a local sawmill and then grounded into finely powdered wood samples. The powdered wood samples and its extracts were screened for the presence or absence of phytochemicals using standard methodologies. The qualitative screening revealed the presence of various secondary metabolites such as tannin, saponin, steroids, flavonoid, alkaoids and terpene in all the three species. The result also showed that Tectona grandis had the highest percentage of Alkaloid (7.5%), Tannin (4.95%), and Flavonoid (4.67%) while Anogeissus leiocarpus had the highest percentage of Saponin (3.06%) and Terpene (1.45%). This study established the fact that the three selected species studied have potentials in the industries for medicinal and anti-pathogenic usages.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83175482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Assessment of antioxidant potential of selected roadside trees leaves in Kumasi Metropolis, Ghana 加纳库马西市选定路边树木叶片的抗氧化能力评估

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.088

U. Uka, E. Belford

{"title":"Assessment of antioxidant potential of selected roadside trees leaves in Kumasi Metropolis, Ghana","authors":"U. Uka, E. Belford","doi":"10.22271/TPR.2020.V7.I3.088","DOIUrl":"https://doi.org/10.22271/TPR.2020.V7.I3.088","url":null,"abstract":"The roadsides of the Kumasi Metropolis, Ghana are lined with the several species of trees, such as, Terminalia catappa, Mangifera indica, Ficus platyphylla and Polyalthia longifolia. The people use them for their health care needs. The vehicle emissions results in oxidative injury in these plants, due to the production of reactive oxygen species. The present study assessed the antioxidant potential of leaves of these tree species subjected to vehicular pollutants. The free radical scavenging activity of leaf extracts of the four tree species were measured using 1, 1diphenyl-2-picryl hydrazyl (DPPH). The total phenolic content (TPC) of the extract was determined by a spectrophotometric assay using the Folin-Ciocalteau’s reagent. Total antioxidant capacity (TAC) was measured using Phosphomolybdate assay. In this study, the medicinal properties of leaves of Terminalia catappa, Mangifera indica, Ficus platyphylla and Polyalthia longifolia sampled from the control sites showed better medicinal properties. DPPH scavenging activity at concentration 2.7 ug ml was lower at the arterial road sites in all the four tree species. A higher DPPH percentage inhibition was recorded at the control sites. The IC50 values were higher for the leaf sample extracts from the arterial road sites and lower for the Control site. The total phenolic content of leaf samples of all the four tree species at the arterial road sites were lower than and significantly different from those at the Control site (p=0.000). The TAC values were lower at the arterial road sites in comparison to the control sites. There was a significant difference among the arterial road sites and also when compared with the control (P<0.05). It could be suggested from this study that variability exists in the antioxidant activities of plants due to a decrease in the medicinal properties of plants subjected to constant auto vehicular pollution.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77185177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mangroves of Sri Lanka: Distribution, status and conservation requirements 斯里兰卡的红树林:分布、现状和保护要求

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.083

A. K. H. Priyashantha, T. Taufikurahman

引用次数: 5

Physicochemical characterization of Jatropha oil seed and suitability as biodiesel feedstock 麻疯树油籽的理化性质及其作为生物柴油原料的适宜性

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.071

A. Yadav, Chitrakoot Satna Madhya Pradesh India Mahatma Gandhi Chitrakoot Gramodaya Vishwavidhyala, S. Mishra, P. S. Kendurkar, Ajay Kumar, R. Maurya

{"title":"Physicochemical characterization of Jatropha oil seed and suitability as biodiesel feedstock","authors":"A. Yadav, Chitrakoot Satna Madhya Pradesh India Mahatma Gandhi Chitrakoot Gramodaya Vishwavidhyala, S. Mishra, P. S. Kendurkar, Ajay Kumar, R. Maurya","doi":"10.22271/TPR.2020.V7.I3.071","DOIUrl":"https://doi.org/10.22271/TPR.2020.V7.I3.071","url":null,"abstract":"The physiocochemical properties of Jatropha curcas kernel oils were characterized as potential biodiesel, including oil yield per plant, seed oil content, kernel oil content, acid value, iodine value, saponification value and cetane number. Twenty-five accessions of Jatropha curcas were used for oil content measurement sranging from 21.14 to 40.66 %with a mean value of 32.85% and Kernels oil 48.59 to 60.45 % with a mean value of 56.28 %. The seed index ranged significantly from a seed weight of 45.45 to 64.45 g. Oil yields per plant ranged from 0.44 to 2.85 kg with a mean value of 1.70 kg per plant, respectively. To understand the properties of acid value, iodine value, saponification and cetane number, experimental physio-chemical studies were performed. Since these properties are critical for determining the current oil condition. The current study confirms that accession seeds performed higher than international saponification value, iodine value and cetane number standards may be an important source for meeting potential energy requirements.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91429663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Altitudinal variation of soil organic carbon stock in tropical forest of Courtallam hills, Southern Western Ghats of India 印度西南高止山脉库尔塔拉姆丘陵热带森林土壤有机碳储量的高度变化

Tropical Plant Research Pub Date : 2020-12-31 DOI: 10.22271/TPR.2020.V7.I3.089

E. Pandian, P. Ravichandran

{"title":"Altitudinal variation of soil organic carbon stock in tropical forest of Courtallam hills, Southern Western Ghats of India","authors":"E. Pandian, P. Ravichandran","doi":"10.22271/TPR.2020.V7.I3.089","DOIUrl":"https://doi.org/10.22271/TPR.2020.V7.I3.089","url":null,"abstract":"The climate change and carbon mitigation through forest ecosystems play an important role in the global perspective. Soil is a huge carbon reservoir and its storage capacity varied greatly with forest type and altitude. The mountain ecosystem varies in soil organic carbon stock (SOC) due to variations in soil types, climatic conditions, vegetation patterns and elevational gradients. Soil organic carbon stockswere measured at three depths (0–10, 10–20, and 20–30 cm) in five different forest elevation (200, 400, 600, 800, and 1000 m asl) on Courtallam hills, Southern Western Ghats, India. SOC stocks increased significantly with the increase in altitude (P<0.05) at all the three layers (0–10, 10–20 and 20–30 cm). A total of SOC stocks ranged from 42.79 mg ha-1at 0–30 cm depth were observed in lower altitude (200 m) and the highest value of 50.25 mg ha-1 at 0–30 cm depth was observed in mid-elevation 600 m, while in other elevational showed 46.45, 48.49 and 45.05 mg ha-1 in 400, 800 and 1000 m respectively. SOC ranged from 17.89 to 22.37 mg ha-1 in soil surface layer (0–10 cm), 14.00 to 16.573 mg ha-1 in middle layer (10–20 cm) and 9.08 to 11.35 mg ha-1 in the bottom layer (20–30 cm). These results would also enhance our ability to assesses the role of these forest types in soil carbon sequestration and for developing and validating the SOC models for tropical forest ecosystems.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87622148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2