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Mengual X.,Smithsonian Institution | Ghorpade K.,University of Agricultural science
ZooKeys | Year: 2010

The flower fly genus Eosphaerophoria is revised. Eight new species are described (adornata sp. n. Mengual, bifida sp. n. Mengual, brunettii sp. n. Ghorpadé, hermosa sp. n. Mengual, luteofasciata sp. n. Mengual, nigrovittata sp. n. Mengual, symmetrica sp. n. Mengual, and vietnamensis sp. n. Mengual), and an identification key is provided. Redescriptions, illustrations, synonymies, diagnoses and distributional data are given for all 11 known species of Eosphaerophoria. The new described species increase the genus' distribution, now recorded from Nepal and Sri Lanka east to New Guinea. All information data, images and drawings, as well as additional images and relevant information, are available online via the internet as an example of the utility of international standards for biodiversity informatics. copy; X. Mengual, K. Ghorpadé. Source


Senthil-Kumar M.,University of Agricultural science
Methods in molecular biology (Clifton, N.J.) | Year: 2010

In response to water-deficit stress, plants alter expression of thousands of genes and as a result, cellular, physiological, and biochemical processes are modified. Understanding the functional role of water-deficit stress-responsive genes is important in order to develop stress-tolerant plants. RNA interference (RNAi) technology is one of the potential reverse genetics tool for assessing the functional significance of these genes. We describe here the protocols for developing stable gene knockdown lines for stress-induced genes using RNAi. In addition, stress imposition method that allows plants to experience gradual acclimation stress is enumerated. Further, precautions that should be taken while developing RNAi lines and during stress imposition are discussed. Source


Rist L.,ETH Zurich | Shaanker R.U.,University of Agricultural science | Shaanker R.U.,Ashoka Trust for Research in Ecology and the Environment | Milner-Gulland E.J.,Imperial College London | Ghazoul J.,ETH Zurich
Ecology and Society | Year: 2010

Many forest communities possess considerable knowledge of the natural resources they use. Such knowledge can potentially inform scientific approaches to management, either as a source of baseline data to fill information gaps that cannot otherwise be addressed or to provide alternative management approaches from which scientists and managers might learn. In general, however, little attention has been given to the relevance of quantitative forms of such knowledge for resource management. Much discussion has focused on the integration of traditional ecological knowledge (TEK) into management, but less attention has been paid to identifying specific areas where it is most useful and where it may be most problematic. We contrasted scientific data with information from TEK in the context of a threat to the sustainable harvesting of a nontimber forest product (NTFP) of livelihood importance in southern India, specifically, a fruit tree infected by mistletoe. The efficiency of deriving information from NTFP harvesters compared to scientific field studies was assessed. We further evaluated the potential of TEK to provide novel solutions to the management problem in question, the degree to which TEK could provide quantitative information, and the biases that might be associated with information derived from TEK. TEK complemented previously gathered ecological data by providing concordant and additional information, but also contradicted some results obtained using a scientific approach. TEK also gave a longer-term perspective with regard to NTFP harvesting patterns. Combining information on historical and current harvesting trends for the NTFP with official data suggests that current assessments of sustainability may be inaccurate and that the use of diverse information sources may provide an effective approach to assessing the status of harvested resources. Copyright © 2010 by the author(s). Source


Sheikh M.K.,University of Agricultural science
Acta Horticulturae | Year: 2015

Pomegranate cultivar 'Kesar' was the subject of experimentation in a farmer's field in Jumnal village, Dist. Bijapur, Karnataka state. In pomegranate, defoliation by Ethephon 39% SL aids in the translocation of nutrients back to the branches by means of senescence. Other chemicals, like Thiourea, insecticides like Metacid and Profenofos are also used by the pomegranate growers to aid in the formation of an abscission layer. The Ethephon 39% SL was used at a concentration of 1000 ppm, whereas Thiourea alone 3 g/L, Ethephon 39% SL 1 ml + Thiourea 3 g + 2 g DAP/L, Metacid 2 ml/L, Profenofos 2 ml/L for defoliation purposes in pomegranate. The defoliation of pomegranate was effective with Ethephon 1000 ppm as compared to Metacid 2 ml/L and Profenofos 2 ml/L of water, and urea phosphate at 5 g/L. Source


Onkara Naik S.,University of Agricultural science
Asian Journal of Microbiology, Biotechnology and Environmental Sciences | Year: 2015

Identification of resistant source of groundnut against sucking insect pests, viz., leafhoppers and thrips was undertaken for two seasons, kharif and rabi-summer, at Regional Research Station and Agricultural College, Raichur, Karnataka. The results on the promising sources of resistant varieties, influence of morphological characters and biochemical constituents of the host plant on insect damage, oviposition rate and survivability of pests on different genotypes/ varieties under caged condition were recorded on a total of 136 groundnut entries comprising 60 genotypes and 76 released varieties. Field screening of 60 genotypes and 76 released varieties over two season's revealed 16 genotypes and 7 varieties were resistant against the target pests. Among 76 released varieties screened for leafhopper reactions, 23 each under resistant and moderately resistant group, 17 varieties were moderately susceptible and nine varieties were susceptible. The highly susceptible group included four varieties. Out of 76 varieties screened for their reaction against thrips, 13 were found resistant, 35 were moderately resistant 12 each in moderately susceptible and susceptible category and five were highly susceptible. None the varieties were found to be seen immune to thrips damage. © Global Science Publications. Source

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