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N. Gurunathan , P. Srimathi , M. Paramathma , K. T. Parthiban , K. Kumaran

Abstract

Studies made with Jatropha curcas on seed priming with different growth regulators, temperatures and durations with the constant seed to solution ratio of 3:2 revealed that priming with IBA 200 ppm at ambient temperature for a duration of 12 to 24 h enhanced the quality characters of Jatropha seedling raised at nursery to evaluate its performance in production of quality seedlings.

Keywords

Jatropha curcas, Quality Seedlings, Seed Priming, Growth Regulators

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K. Kumaran , I. Jaisankar , K. Nesamani , M. Paramathma

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P. Ratha Krishnan , J. Sundersingh Rajapandian , K. Kumaran , K. S. Neelakantan

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K. Kumaran , S. Umesh Kanna , K. Geethanjali , M. Paramathma

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P. Masilamani , K. Kumaran , K. Annadurai , J. Balamurugan , I. Sekar

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K. Kumaran , K. Nesamani , M. Govinda Rao

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Correlation and path coefficient studies were carried out in 15 seed sources of Simarouba glauca DC. collected from Tamil Nadu, Karnataka, Maharashtra and Orissa. Genotypic correlation coefficients were higher than phenotypic correlation coefficient in all the cases. Height and basal diameter had positive and highly significant correlation with volume index at both phenotypic and genotypic levels, in all the three locations viz. Mettupalayam, Tindivanam and Coimbatore. Height exhibited positive and highly significant inter correlation with basal diameter at both levels in all three locations. Path analysis revealed that height and basal diameter exhibited positive direct effect, while number of branches showed negative direct effect on volume index in all the three locations except at Mettupalayam. Height and basal diameter could serve as reliable selection index.

Keywords

Biometric Traits, Genotypic Correlation Coefficient, Path Analysis, Phenotypic Correlation Coefficient and Simarouba glauca

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K. Kumaran , S. Kala , M. Govinda Rao

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K. Kumaran , S. Umesh Kanna , Joseph Anton Amal

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S. K. Kala , K. Kumaran

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Bixa orellana,L. is one of the important natural colourant and medicinal plant in the world. "Bixin" is a natural seed specific orange-red (carotenoid) pigment widely used in food and cosmetic industries. Were selected from major Annatto growing regions. Substantial variability was recorded in morphological traits of selected plus trees. Significant variations were observed in growth characters of plus tree progenies under nursery. The Genetic divergence study reveals that 34 CPTs were grouped into eleven clusters. Clustering pattern indicated no relationship between the genetic divergence and geographical distribution. The maximum inter cluster distance was observed between cluster X and VII. The maximum intra cluster distance was shown by cluster X. Hence, the clusters were genetically divergent from each other. Therefore, hybridization involving trees of clusters X and VII is recommended in order to achieve high yielding genotypes in Bixa orellana. On the basis of high cluster mean and wide genetic distance, the superior plus trees of cluster X (KLBi 1, KLBi 3 and KLBi 5) and cluster VII (KLBi 11 and KABi 6) may be considered as potential parents for further tree improvement programme in Bixa orellana.

Keywords

Bixin, Candidate Plus Trees, Genetic Diversity, Cluster, Tree Improvement

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S. Kala ¹, K. Kumaran ²

Affiliations
1 Central Soil & Water Conservation Research & Training Institute, Research Centre, Chhalesar, Agra-282006, Uttar Pradesh, IN
2 Forest College and Research Institute, Tamil Nadu Agricultural University, Mettupalayam - 641 301, Coimbatore District, Tamil Nadu, IN

Abstract

Clonal propagation is one of the most effective tools for improvement in forestry. The study describes the scope and development of clonal propagation technology for Bixa orellana commonly known as Annatto. Developing rapid and improved clonal study reveals that clonal prorogation is possible through stem cuttings collected from matured trees. The study standardized the effect of cutting size, concentration of IBA and ischolar_main media on success and survival of stem cuttings in this species. Percentage ischolar_maining and primary ischolar_main number differed significantly between treated and untreated cuttings. Treatment of cuttings with 4000 ppm IBA maximized ischolar_maining (83.30%), along with increased survival (78.30%) and primary ischolar_main number (20.20). Rooting success and ischolar_main number were better in 15 cm x 20 mm diameter sized cuttings. Cuttings planted in sand: soil (1:1) ischolar_mained better with more ischolar_mains ensuring better survival. Survival and growth of the clonal plants were best when using improved techniques like size of the cuttings with proper concentration of IBA and also combined with suitable ischolar_maining media. However, there was significant variation in height growth (shoots sprouts length) of cuttings due to IBA treatments. The results suggested that it could be possible to produce clones of high yielding superior genotypes of Bixa orellana on large scale through stem cutting for popularization and establishment of commercial forestry and agroforestry plantations.

Keywords

Bixin, Rooting, Indole Butyric Acid, Rooting Media, Tree Improvement.

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N. Murali ¹, K. Kumaran ¹

Affiliations
1 Computer Science and Engineering, E.G.S. Pillay Engineering College, Nagapattinam, IN

Abstract

In this paper, we propose a Two-tier Overlay Multicast Architecture (TOMA) to provide scalable and efficient multicast support for various group communication applications. In TOMA, Multicast Service Overlay Network (MSON) is advocated as the backbone service domain, while end users in access domains form a number of small clusters, in which an application-layer multicast protocol is used for the communication between the clustered end users. TOMA is able to provide efficient resource utilization with less control overhead, especially for large-scale applications. It also alleviates the state scalability problem and simplifies multicast tree construction and maintenance when there are large numbers of groups in the network. To help MSON providers efficiently plan backbone service overlay, we suggest several provisioning algorithms to locate proxies, select overlay links, and allocate link bandwidth. Extensive simulation studies demonstrate the promising performance of TOMA.

Keywords

Network Architecture and Design, Multicast, Network Management.

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N. Murali ¹, K. Kumaran ¹

Affiliations
1 Computer Science and Engineering, E.G.S. Pillay Engineering College, Nagapattinam, IN

Abstract

The explosive growth in the number of mobile devices such as Internet-enabled cellular phones, wireless handheld devices, wireless laptops, and tablet PCs has driven the corresponding growth in applications for mobile computing. These applications usually belong to one of two classes: collaborative applications and individual application. While collaborative applications require several mobile devices to work together and include peer-to-peer computing and grid computing, individual applications are local to the mobile device and its user. In this paper, we present a framework that allows mobile devices to collaboratively work on a computationally-expensive problem. Such a problem is decomposed into smaller tasks and distributed across other mobile devices willing to share their computational power with others. This framework is based on the paradigm of grid computing applied to the domain of wireless mobile devices. This paper presents our current implementation of the framework architecture and simulation of its functionality. Also, we focus on the issues of mobility, QoS and network stability and their effect on the performance of our collaborative problem-solving framework.

Keywords

Grid Architecture, Wireless Network, Mobile Devices.

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M. A. Arunagiri ¹, K. Kumaran ², N. Murali ²

Affiliations
1 C.C.M.R. Polytechnic College, Thanjavur-613003, IN
2 E.G.S. Pillay Engineering College, Nagapattinam, IN

Abstract

A "graph" refers to a collection of vertices or nodes and a collection of edges that connect pairs of vertices. A graph may be undirected, meaning that there is no distinction between the two vertices associated with each edge, or its edges may be directed from one vertex to another. Spanning Tree is a tree that connects all vertices in the graph. In a single graph, we can have many number of spanning tree. A minimum spanning tree (MST) is then a spanning tree with edge cost less than or equal to the cost of every other spanning tree. Several algorithms have been proposed to find minimum spanning tree. Considering the entire graph to construct MST is a difficult task since the number of nodes increases then the complexity also increases and is vice versa. So here we apply divide and conquer approach to split the nodes into several groups (clusters) and then MST is performed to each cluster and finally clusters are connected. Several clustering algorithms are used for distance based clustering here we prefer to take hierarchical clustering algorithm to find minimum spanning tree. Present work the authors conclude that performance of hierarchical clustering is better than that of other techniques. The experimental results of the performance outcome of the hierarchical are so better that the K mean clustering technique.

Keywords

Hierarchical Clustering, MST, K Means Clustering.

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