scholarly journals Evaluation of Provenances of Eucalyptus camaldulensis and Clones of E. camaldulensis and E. tereticornis at Contrasting Sites in Southern India

2008 ◽  
Vol 57 (1-6) ◽  
pp. 170-179 ◽  
Author(s):  
M. Varghese ◽  
C. E. Harwood ◽  
R. Hegde ◽  
N. Ravi
Keyword(s):  
Tamil Nadu ◽  
Andhra Pradesh ◽  
Growth Traits ◽  
Basic Density ◽  
Eucalyptus Camaldulensis ◽  
Southern India ◽  
Individual Tree ◽  
Land Race ◽  
Volume Production ◽  
Eucalyptus Camaldulensis Dehnh

Abstract A total of 188 open-pollinated families of Eucalyptus camaldulensis Dehnh. from 18 Australian natural provenances and 15 selected Indian families of the “Mysore Gum” land race were evaluated in three provenance- family trials at contrasting sites in southern India. At two years of age, the fastest growth was recorded at the driest site in Tamil Nadu, where E. camaldulensis provenances from Queensland were superior to those from Northern Territory and Western Australia, and the Indian land race. Provenance differences were less pronounced at the two higher-rainfall sites in Andhra Pradesh and Kerala. Interaction of provenance performance with site was significant. Within- provenance individual-tree heritabilities for height and diameter at breast height (dbh) were low at the three individual sites, ranging from 0.08 ± 0.05 to 0.19 ± 0.05 for height and 0.10 ± 0.05 to 0.19 ± 0.04 for dbh. Across-site heritabilities, 0.07 ± 0.02 for both height and dbh, were lower than those at individual sites. Phenotypically superior trees were selected from these trials and seven other plantings of E. camaldulensis and Eucalyptus tereticornis Smith in southern India and cloned from basal coppice. A total of 78 E. camaldulensis and 27 E. tereticornis selections, together with thirteen commercially planted Eucalyptus clones and five superior natural provenance seedlots, were tested in clonal trials at three sites in southern India, the different individual treatments being tested at from one to three sites. Three years after planting, most clones selected from E. camaldulensis trials and the commercial Eucalyptus clones were superior in volume production to E. tereticornis clones and seedling controls at a dry site in Tamil Nadu. A smaller number of clones, particularly those of E. camaldulensis, were also superior to seedling controls at an intermediate-rainfall site in Andhra Pradesh. At a third high-rainfall site in Kerala, seedling controls were superior to all but four of 46 clones tested. Significant clone-by-site interaction was observed for growth traits. At the dry site in Tamil Nadu, clones varied widely in their wood basic density from 450 to 700 kg m-3, and there was no significant correlation of clonal values for growth and wood density. The results confirm that clones are best selected and tested in environments similar to those where they will be deployed.

scholarly journals Clonal Variation and Genotype by Environment Interactions in Growth and Wood Density in Eucalyptus camaldulensis at Three Contrasting Sites in Vietnam

2010 ◽  
Vol 59 (1-6) ◽  
pp. 17-28 ◽  
Author(s):  
N. D. Kien ◽  
G. Jansson ◽  
C. Harwood ◽  
C. Almqvist
Keyword(s):  
Growth Traits ◽  
Basic Density ◽  
Eucalyptus Camaldulensis ◽  
Clonal Variation ◽  
Direct Selection ◽  
North Central ◽  
Genotype By Environment ◽  
Pilodyn Penetration ◽  
Selection For ◽  
Genotypic Correlations

AbstractA total of 172 clones of Eucalyptus camaldulensis were tested in three clonal tests in northern, north-central and southern Vietnam, with 32 of them planted across all three sites. At age 3-5 years, the clonal repeatabilities were 0.18-0.42 for growth traits, 0.71-0.78 for wood basic density and 0.56-0.66 for pilodyn penetration. Genotypic correlations between growth and density at the three sites were from -0.24 to 0.17, and did not differ significantly from zero. Genotypic correlations between sites were 0.32-0.56 for growth traits at age 3 years, and 0.72-0.88 for density and pilodyn penetration. Selection gains for breast height diameter at individual sites at a selection proportion of 5% were 22-32%, with minor effects on density. Selection for diameter at one site gave indirect responses in diameter at the other two sites that were only 40-60% of the gains obtainable from direct selection at those sites. This study shows that fast-growing E. camaldulensis clones can be selected in Vietnam with only minor effects on density. Selection for growth should be regionally based to maximize selection gain whereas clonal rankings for density will change little across regions.

scholarly journals PHYSICAL PROPERTIES AND PRESERVATIVE TREATMENT OF EUCALYPTUS AND CORYMBIA WOOD

FLORESTA ◽  
2021 ◽  
Vol 51 (2) ◽  
pp. 410
Author(s):  
Manolo Trindade Quintilhan ◽  
Weslley Candido de Oliveira ◽  
Aylson Costa Oliveira ◽  
Bárbara Luísa Corradi Pereira ◽  
Romulo Môra
Keyword(s):  
Physical Properties ◽  
Eucalyptus Grandis ◽  
Basic Density ◽  
Eucalyptus Camaldulensis ◽  
Treatment Quality ◽  
Preservative Treatment ◽  
Eucalyptus Camaldulensis Dehnh ◽  
Corymbia Citriodora

The properties of wood influence its use as a final product, so it is essential to know their relation and influence on the quality of preservation. In this sense, for the present study we aim at the determination of the physical properties of Corymbia citriodora [Eucalyptus citriodora Hook]; Eucalyptus camaldulensis Dehnh. and Eucalyptus camaldulensis Dehn. x Eucalyptus grandis, and the quality of the preservative treatment with CCA-C in an autoclave. We determined diameter, heartwood and sapwood percentages, and their relationship, as well as the basic density for the three genetic materials. The quality of the preservation was evaluated through the area treated and not treated by CCA, besides its penetration and retention. The highest proportion of sapwood, treated area, and highest density value was found in C. citriodora, whereas the hybrid E. camaldulensis x E. grandis presented the highest level of CCA retention. The diameter and density showed the highest correlation with CCA retention in wood, the length and moisture of the small logs also shown to be influential. All clones presented satisfactory chemical treatment quality for use as fence posts.

scholarly journals Genetic variation and genetic gain in growth traits, stem-branch characteristics and wood properties and their relationships to Eucalyptus urophylla clones

2013 ◽  
Vol 62 (1-6) ◽  
pp. 218-231 ◽  
Author(s):  
Shijun Wu ◽  
Jianmin Xu ◽  
Guangyou Li ◽  
Zhaohua Lu ◽  
Chao Han ◽  
...  
Keyword(s):  
Growth Traits ◽  
Southern China ◽  
Genotypic Variation ◽  
Basic Density ◽  
Wood Properties ◽  
Eucalyptus Urophylla ◽  
Individual Tree ◽  
Tree Wood ◽  
Selection Gain ◽  
Genotypic Correlations

AbstractGrowth traits, wood properties, stem-branch characteristics and bark percentage were assessed for 60 Eucalyptus urophylla S.T. Blake clones in southern China measured at age 21, 52, 71 and 96 months. Analysis of variance showed that there were significant differences on growth traits, wood properties and individual tree wood weight among clones. Coefficients of genotypic variation ranged from 12.12% to 53.16% for growth traits, 9.02% to 20.18% for wood properties, 21.75% to 22.71% for stem-branch characteristics, 28.31% for bark percentage and 51.20% for individual tree wood weight. Repeatability ranged from 0.36 to 0.53 for growth traits, 0.35 to 0.51 for wood properties, 0.21 to 0.24 for stembranch characteristics, 0.07 for bark percentage and 0.31 for individual tree wood weight. The strongly negative genotypic correlations suggesting that selection on growth traits at 21 months can not be effective to predict growth traits at 96 months whereas it could be used to predict growth traits at 52 and 71 months. The genotypic correlations between growth traits and basic density were ranged from -0.78 to 0.28 and weakly positive phenotypic correlations were found between growth traits and basic density, ranging from 0.03 to 0.09. The selection gain on diameter at breast height over bark by different selection proportions at 21, 52, 71 and 96 months old expressed that selection gain at 71 months was some what higher than that at other ages during 10% to 30% selection proportion, while selection gain at 52 months was some what higher than that at other ages during 60% to 90% selection proportion. Wood properties and individual tree wood weight which are strongly related to end production and economically important in pulp production should be studied extensively especially for pulp breeding.

Predicting the potential distribution of the lesser-known endemic Madras hedgehog Paraechinus nudiventris (Order: Eulipotyphla, Family: Erinaceidae) in southern India

Mammalia ◽  
2019 ◽  
Vol 83 (5) ◽  
pp. 470-478
Author(s):  
Brawin Kumar ◽  
Santhanakrishnan Babu ◽  
Honnavalli N. Kumara
Keyword(s):  
Rural Areas ◽  
Tamil Nadu ◽  
Potential Distribution ◽  
Andhra Pradesh ◽  
Small Body ◽  
Distribution Range ◽  
Southern India ◽  
Annual Rainfall ◽  
Potential Range ◽  
Savanna Vegetation

Abstract The Madras hedgehog (Paraechinus nudiventris) is a less-known insectivorous mammal, endemic to southern India, and known from the states of Tamil Nadu, Kerala, Karnataka, Andhra Pradesh and Telangana. The nocturnal habit, small body size and elusive nature of P. nudiventris have resulted in limited studies on its habitat selection and ecology. The confirmed locations of P. nudiventris from our field surveys and existing sight records were pooled. These geocoordinates were then used as the “occurrence location” to predict the potential distribution range of P. nudiventris in southern India based on a set of climatic and terrain variables using the MaxEnt algorithm. The predicted model shows the suitable ecological conditions in the districts of Erode, Tirunelveli, Tuticorin, Coimbatore and Tiruppur in Tamil Nadu, making them highly probable sites for its presence. Most of the predicted suitable range and high potential range fall in the non-protected semi-dry zones characterized by low annual rainfall with sparse savanna vegetation, lowland [0–750 m above sea level (asl)] and the rural areas of southern Tamil Nadu. Our findings establish the potential distribution range of this species in parts of Karnataka, Andhra Pradesh, Kerala and most of Tamil Nadu.

India Higher Education Atlas: Andhra Pradesh, Goa, Karnataka, Kerala, Puducherry, Tamil Nadu, Telangana - Volume 5

2018 ◽  
Author(s):  
Teja Malladi ◽  
Dhananjayan Mayavel ◽  
Nilakshi Chatterji ◽  
Pratyush Tripathy
Keyword(s):  
Higher Education ◽  
Tamil Nadu ◽  
Andhra Pradesh

Evaluation of Gloriosa superba for Yield Attributing Characters and Quantification of Colchicine Originated from Different Agro Climatic Zones of Tamil Nadu and Andhra Pradesh

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Arun Kumar P. ◽  
Elangaimannan R.
Keyword(s):  
Seed Yield ◽  
Tamil Nadu ◽  
High Performance ◽  
Andhra Pradesh ◽  
Crop Improvement ◽  
Mean Value ◽  
Hplc Method ◽  
Gloriosa Superba ◽  
Climatic Zones ◽  
Colchicine Alkaloid

The study was conducted to evolve Gloriosa superba for yield characters and alkalodi content for selecting elite genotypes for comercial exploitatio n. The genotypes were sowm in Variyankaval village, Udayarpalayam taluk of Ariyalur district, Tamil Nadu. The highest mean value for fresh and dry seed yield was observed in Chittor local. The genotype Mulanur local has recorded the highest mean value for number of pods per plant and number of seeds per pod and Arupukotai local excelled the general mean for the traits seeds per pod, fresh and dry seed yield and also for tuber characters. An investigation was carried out to quantify the colchicine (alkaloid) present in tubers by High Performance Liquid Chromatography (HPLC) method. The genotypes collected from Arupukotai recorded the highest colchicine content (0.760 mg/g) followed by Chittoor (0.578 mg/g) and Mulanur (0.496 mg/g) and there by these three genotypes were utilized for further crop improvement.

ALTURA E SOBREVIVÊNCIA DE Eucalyptus camaldulensis Dehnh EM DIFERENTES ESPAÇAMENTOS AOS 14 MESES APÓS PLANTIO EM CAMPO EM ALVORADA DO GURGUÉIA –PIAUÍ

2018 ◽  
Author(s):  
Silva Raynara Ferreira da ◽  
Sousa Moema Barbosa de ◽  
Silva Aluísio Costa ◽  
Marinho Eduardo Silva ◽  
Dias Bruna Anair Souto
Keyword(s):  
Eucalyptus Camaldulensis ◽  
Eucalyptus Camaldulensis Dehnh

Three Mosses New to Bryoflora of Eastern Ghats

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
A.K. Asthana ◽  
Priyanshu Srivastava
Keyword(s):  
Tamil Nadu ◽  
Andhra Pradesh ◽  
Eastern Ghats ◽  
Extended Range

Eastern Ghats are discontinuous hill ranges passing through Orissa, Andhra Pradesh and Tamil Nadu located between 11⁰30' & 22⁰N latitude and 76⁰50' & 86⁰30'E longitude. Bryophyte flora of this region is still very less explored. During a recent field exploration to Eastern Ghats region of Tamil Nadu three moss taxa viz. Solmsiella biseriata (Austin) Steere, Aulacopilum glaucam Wilson and Groutiella tomentosa (Hornsch) Wijk & Marg. have been identified as new additions to moss flora of Eastern Ghats. The present study provides the information regarding extended range of distribution of these taxa in India and a compensable account of morpho-taxonomical details with earlier described taxa from other bryogeographical zones.

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