Tropical Plant Research最新文献_第8页

Hygrophila madurensis (N.P. Balakr. & Subram.) Karthik. & Moorthy: An overlooked endemic species of Tamil Nadu, India 嗜水线虫(N.P.巴拉克)& Subram)。恋人。&月牙:印度泰米尔纳德邦一种被忽视的特有物种

Tropical Plant Research Pub Date : 2019-04-30 DOI: 10.22271/tpr.2019.v6.i1.016

C. P. Muthupandi, R. Kottaimuthu, K. Rajendran

{"title":"Hygrophila madurensis (N.P. Balakr. & Subram.) Karthik. & Moorthy: An overlooked endemic species of Tamil Nadu, India","authors":"C. P. Muthupandi, R. Kottaimuthu, K. Rajendran","doi":"10.22271/tpr.2019.v6.i1.016","DOIUrl":"https://doi.org/10.22271/tpr.2019.v6.i1.016","url":null,"abstract":"INTRODUCTION The family Acanthaceae is positioned under the order Lamiales and belong to the core class Euasterids I of Core Eudicots (Chase & Reveal 2009). According to the recent estimate (Karthikeyan et al. 2009) 593 Acanthaceae taxa (475 species and 118 varieties) are present in India. The genus Hygrophila R.Br. belongs to the tribe Ruellieae of family Acanthaceae (Scotland & Vollessen 2000) and comprises about 100 species (Hu & Daniel 2011). India is known to have 18 species (Karthikeyan et al. 2009, Sunojkumar & Prasad 2014), of these H. madurensis and H. thymus are endemic to Tamil Nadu (Singh et al. 2015, Kottaimuthu et al. 2018). During the course of our recent studies on the wetland plants of Madurai District, we have collected an interesting species of Acanthaceae that is characterized by distinctly pedicellate flowers, pedunculate cymes and linear–oblong capsules. Critical studies with pertinent literature; it is identified as Hygrophila madurensis (N. P. Balakr. & Subram.) Karthik. & Moorthy (Balakrishnan & Subramanyam 1963, Balakrishnan 1988, Raja et al. 2015). A perusal of literature revealed that this species is listed as critically endangered and endemic to Tamil Nadu, found along the foothills of the Eastern Ghats (Balakrishnan 1988, Nayar 1996, Walter & Gillett 1998, Reddy et al. 2006, Arisdason 2011). However, this species was not included in Acanthaceae of Eastern Ghats (Pullaiah et al. 2011). A detailed description, photographs, associated species and threat status are provided for easy identification and conservation of this little known endemic species.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84043203","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

Floristic composition and vegetation structure of Ades forest, Oromia regional state, West Hararghe zone, Ethiopia 埃塞俄比亚西哈拉河地区奥罗米亚州Ades森林的区系组成和植被结构

Tropical Plant Research Pub Date : 2019-04-30 DOI: 10.22271/tpr.2019.v6.i1.020

Dereje Atomsa, Duguma Dibbisa

引用次数: 9

Enhanced rhizome induction and fast regeneration protocol in liquid culture of Dendrocalamus longispathus Kurz: A single step culture 长石菖蒲液体培养根茎诱导和快速再生方案:一步培养

Tropical Plant Research Pub Date : 2019-04-30 DOI: 10.22271/TPR.2019.V6.I1.004

P. Borpuzari, N. Bisht

引用次数: 3

Preliminary studies on seed dormancy of Schleichera oleosa (Lour.) Merr. 石竹种子休眠的初步研究稳定。

Tropical Plant Research Pub Date : 2019-01-01 DOI: 10.22271/TPR.2019.V6.I1.019

M. Kundu, N. Chaturvedi

引用次数: 3

Variability in yield and composition of oil from Indian Sandalwood (Santalum album L.) trees grown in homogeneous conditions 在均匀条件下生长的印度檀香(Santalum album L.)树的产量和油成分的变化

Tropical Plant Research Pub Date : 2019-01-01 DOI: 10.22271/TPR.2019.V6.I1.006

S. S. Bisht, Mamata Ravindra, D. Gayathri

{"title":"Variability in yield and composition of oil from Indian Sandalwood (Santalum album L.) trees grown in homogeneous conditions","authors":"S. S. Bisht, Mamata Ravindra, D. Gayathri","doi":"10.22271/TPR.2019.V6.I1.006","DOIUrl":"https://doi.org/10.22271/TPR.2019.V6.I1.006","url":null,"abstract":"The study evaluated the variability in yield and composition of oil from the heartwood of Indian Sandalwood (Santalum album) trees grown in homogeneous condition. Trees grown at Institute of Wood Science and Technology campus, Bengaluru were considered in this study. Wood samples were collected from trees having different girth size (47.1, 53.4, 61.2, 69.1, 72.2, 74, 75.4, 81.6 and 82.4 cm). About 500 g of heartwood powder per sample was extracted by hydro-distillation method using Clevenger's apparatus. Oil yield extracted from these samples varied from 1.6–3.6 % of heartwood. Chemical profiling of the oil samples was carried out by gas chromatography-mass spectrometry (GC-MS-QP-2010 Ultra Auto Sampler). A chemically diversified alkanes, sesquiterpenoids, sesquiterpene, fatty acids, and alcohols, were detected. The major constituents were α-santalol (41.7–53.67 %), β-santalol (18.2–27.9 %), epi-β-santalol (2.7– 7.18 %), β-santalene (1.39–5.30 %), α-santalene (0.4–4.87 %), and α-bergamotol (3.1–9.3 %). In this study, it was concluded that the oil yield and its composition varies among the trees with different girth. But no particular trends were observed between the girth size and oil yield.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79188395","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: 11

Annual flowering of Dendrocalamus longispathus (Kurz) Kurz in Mizoram 米佐拉姆邦长叶菖蒲(Kurz)的年开花

Tropical Plant Research Pub Date : 2019-01-01 DOI: 10.22271/TPR.2019.V6.I1.008

S. Yadav, Aizawl Mizoram India Rattan, H. Raj, Lalnunmawia F Lalnunmawia

引用次数: 1

Chemical control of rice brown spot (Bipolaris oryzae) in Paraguay 巴拉圭水稻褐斑病的化学防治

Tropical Plant Research Pub Date : 2019-01-01 DOI: 10.22271/TPR.2019.V6.I1.021

M. Barúa, Uni, L. Quintana, A. Ortiz

引用次数: 3

Tree height prediction models for two forest reserves in Nigeria using mixed-effects approach 尼日利亚两个森林保护区树高混合效应预测模型

Tropical Plant Research Pub Date : 2019-01-01 DOI: 10.22271/TPR.2019.V6.I1.017

F. N. Ogana

{"title":"Tree height prediction models for two forest reserves in Nigeria using mixed-effects approach","authors":"F. N. Ogana","doi":"10.22271/TPR.2019.V6.I1.017","DOIUrl":"https://doi.org/10.22271/TPR.2019.V6.I1.017","url":null,"abstract":"Height-diameter models for predicting tree height are essential for routine forest inventory. These models can be developed using fixed-or mixed-effects approach. Few studies have applied the mixed-effect approach to developed height prediction model for the natural forest in Nigeria. Therefore, in this study, the mixed-effect modelling approach was used to develop height prediction models for Ikrigon and Cross River South (CRS) Forest Reserves, Nigeria. Data consist of 776 and 438 height-diameter pairs from Ikrigon and CRS Forest Reserves, respectively. Five 2-parameters and five 3-parameters height-diameter models were evaluated including Nalund, Wykoff, Curtis, Meyer, Michaelis-Menten, Chapman-Richards, Ratkowsky, Korf, Logistic and Gompertz. Model fitting was done in two stages: Fixed-effect approach was used in the first stage wherein candidate models were selected and refitted in the second stage using mixed-effect approach. Adjusted coefficient of determination, root mean square error, mean absolute bias, Akaike information and Bayesian information criterion were used to assess the models. The results showed that Gompertz and Meyer models were more consistent. Gompertz and Meyer had adjusted coefficient of determination, root mean square error, mean absolute bias, Akaike information criterion and Bayesian information criterion of 0.642, 4.457, 3.501 and 4591.487, 4638.028; and 0.638, 4.482, 3.541, 4592.008, 4619.933, respectively for Ikrigon and 0.724, 4.076, 3.215, 2536.148 and 2576.970; and 0.711, 4.176, 3.273, 2536.352 and 2560.845, respectively for CRS. The mixed-effect approach improved tree height predicting of the forest stands. These models are recommended for estimating tree height in the forest reserves.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77624136","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

Quantification of the effect of agriculture on forest carbon stock: Case study of a Nigerian forest reserve 农业对森林碳储量影响的量化:以尼日利亚森林保护区为例

Tropical Plant Research Pub Date : 2019-01-01 DOI: 10.22271/TPR.2019.V6.I1.015

T. E. Ogana, F. N. Ogana

{"title":"Quantification of the effect of agriculture on forest carbon stock: Case study of a Nigerian forest reserve","authors":"T. E. Ogana, F. N. Ogana","doi":"10.22271/TPR.2019.V6.I1.015","DOIUrl":"https://doi.org/10.22271/TPR.2019.V6.I1.015","url":null,"abstract":"The competition for land between forest and agriculture has been a long-time issue. The tropical forest has been greatly reducing due to agricultural activities. There are few studies on the quantification of forest carbon stock loss caused by encroaching agricultural activities. Therefore, this study compared the biomass in the areas encroached by farming activities and forested areas; and also analyzed the forest cover change in Cross River South Forest Reserve, Nigeria. Data were obtained through forest inventory and satellite imageries. Eight sample plots of 0.25 ha were used (plots were laid in the forested and the encroached parts of the reserve). Established allometric equation was used to estimate the biomass. Satellite images from Landsat between 2002 and 2017 were used for the forest cover change. The results showed that there is a significant difference in the mean aboveground carbon density of the forested part (108.6571 tC ha) and the encroached part (44.1567 tC ha) of the reserve. The forest cover change of Forest Reserve showed that about 6,750 ha was deforested within the period with an annual rate of forest cover loss of 0.54%. It was concluded that the farming activities have negatively impacted the quantity of carbon stock of the forest reserve.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75149212","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

Assessment of liana diversity and carbon stock in differently disturbed tropical dry evergreen forests of southern India 印度南部不同扰动条件下热带干常绿森林藤本植物多样性及碳储量评价

Tropical Plant Research Pub Date : 2019-01-01 DOI: 10.22271/TPR.2019.V6.I1.012

K. Babu, N. Parthasarathy

{"title":"Assessment of liana diversity and carbon stock in differently disturbed tropical dry evergreen forests of southern India","authors":"K. Babu, N. Parthasarathy","doi":"10.22271/TPR.2019.V6.I1.012","DOIUrl":"https://doi.org/10.22271/TPR.2019.V6.I1.012","url":null,"abstract":"Lianas are important components of tropical forests that play a crucial role in forest dynamics. We investigated biodiversity and carbon stock of lianas in two tropical dry evergreen forest (TDEF) sites, the relatively undisturbed Sendhirakillai (SK) and disturbed Palvathunnan (PT) by establishing one-hectare plot in each site. All lianas ≥ 1cm diameter (measured 1.3 m from rooting point) and trees ≥ 10cm girth (measured at 1.3 m from ground) were enumerated to ascertain species richness and stem density of lianas and trees with respect to site disturbance. Liana diversity totaled 24 species (16 in SK and 20 in PT) in the two studied sites. Liana density totaled 1182 individuals (744 ha1 in SK and 438 ha1 in PT). Fifty percent of species were shared between the two sites. A considerable variation in the density, dominance and basal area of different species was found between the sites. No dominant family was common to both the sites. Stem twining and zoochory was predominant in both disturbed and undisturbed sites. Lianas comprised 36.4% (SK) & 48.8% (PT) of the total woody species richness (lianas + tress) and 37% (SK) and 38.3% (PT) of the total woody species density. The mean aboveground biomass and carbon stock of lianas were 7.2 Mg ha and 4.5 Mg ha, accounting for 1.94% of total woody species community (trees + lianas). The aboveground biomass and carbon stocks were highest in undisturbed site SK compared to disturbed site PT. The extent of liana diversity and their contribution to the total woody plant abundance and biomass highlight the importance of lianas in forest functioning, dynamics and mitigating climate change. Considering the biodiversity TDEFs hold and the current level of human disturbance, a holistic approach in conservation is emphasized.","PeriodicalId":23334,"journal":{"name":"Tropical Plant Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84228090","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: 7