Isolation of <Emphasis Type="Italic">Penicillium hirsutum</Emphasis> from spoiled,packaged asparagus spears in Japan     

Michihiko?SaitoEmail author  Deepak Raj?Rai  Ryoichi?Masuda 《Journal of General Plant Pathology》2003,69(5):304-306

During storage studies on asparagus spears packed in plastic film and held at 15°C, a Penicillium fungus was associated with subsequent spoilage. On the basis of colony characteristics, the isolate was identified as Penicillium hirsutum Diercks. This report is the first of Penicillium hirsutum causing spoilage of asparagus spears in Japan. Inoculation tests showed that among all the Penicillium species tested in this study only the identified fungus was able to infect asparagus spears.  相似文献   

Induction of resistance against downy mildew pathogen in pearl millet by a synthetic jasmonate analogon     

Shantharaj Deepak  Sathyanarayana Niranjan-Raj  Shekar Shailasree  Ramachandra K. Kini  Wilhelm Boland  Hunthrike S. Shetty  Axel Mithfer 《Physiological and Molecular Plant Pathology》2007,71(1-3):96-105

The synthetic 1-oxo-indanoyl-l-isoleucine methyl ester (Ind-Ile-Me) represents a highly active mimic of octadecanoic phytohormones, which are involved in plant defenses against pathogens and pests. Seed treatments and foliar spray with Ind-Ile-Me were tested for induced resistance against downy mildew disease caused by the phytopathogenic oomycete Sclerospora graminicola in pearl millet (Pennisetum glaucum) under greenhouse and field conditions. Under greenhouse conditions, a 50% protection level was achieved after seed treatment. Seed treatment in combination with foliar spray resulted in 60% protection. The induction of resistance was correlated with the enhanced activities of defense-related proteins such as phenylalanine-ammonia-lyase, peroxidase, and enhanced level of hydroxyproline-rich glycoproteins. Under field conditions, a maximum protection of 62% was recorded upon seed treatment along with foliar spray. Hence, it infers that Ind-Ile-Me can be used as a valuable protection compound at least in downy mildew disease management.  相似文献   

Identification of the Putative Cytoplasmic Donor of a CMS System in Brassica juncea     

Akshay K.  Pradhan  Arundhati  Mukhopadhyay Deepak  Pental 《Plant Breeding》1991,106(3):204-208

Chloroplast (cp) and mitochondrial (mt) DNA restriction profiles of a cytoplasmic male sterile (CMS) line of Brassica juncea and its maintainer line were compared and found to be markedly different. Comparison of cpDNA restriction profiles of fifty different species of genus Brassica and some allied genera showed that the cpDNA profiles of CMS lines were similar to that of B. tournefortii for twenty different restriction endonucleases. This CMS system is thus not of spontaneous origin as reported earlier, but is alloplasmic in nature. Comparison of restriction profiles of mtDNA of B. tournefortii and CMS lines revealed some differences which might either be due to changes in DNA pattern during the transfer, or, due to the cytoplasm coming from a B. tournefortii line different from the one used in this study.  相似文献   

Identification of a Stable Maintainer Line for 'Polima' Cytoplasmic Male Sterility in Rapeseed (B. napus L.)     

Y. S. Sodhi    A. K. Pradhan    A. Mukhopadhyay  Deepak  Pental 《Plant Breeding》1993,110(4):334-337

‘Polima’ cytoplasmic male sterility (CMS) was transferred to three different genotypes of B. napus i.e. GSL-1, ISN706 and HNS-8 by repeated backcrossing and was found to be completely stable in the nuclear background of synthetic B. napus genotype, ISN706, derived from a cross B. campestris ssp. oleifera var. brown sarson ×B. oleracea var. botrytis cv. Tusa Katki'. The BC₅ and BC₆ generation lines of ISN706, GSL-1 and HNS-8 with ‘Polima’ CMS were grown under a range of temperature and photo-period conditions to test their stability. No breakdown in sterility was observed in ‘Polima’ ISN706 and, therefore, this genotype can be used as a maintainer for hybrid seed production.  相似文献   

Investigating tropical deforestation using two-stage spatially misaligned regression models     

Deepak K. Agarwal  Alan E. Gelfand  John A. Silander 《Journal of Agricultural, Biological & Environmental Statistics》2002,7(3):420-439

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Screening new <Emphasis Type="Italic">Arachis</Emphasis> amphidiploids,and autotetraploids for resistance to late leaf spot by detached leaf technique     

Nalini Mallikarjuna  Deepak R. Jadhav  Kanaka Reddy  Fatema Husain  Kumkum Das 《European journal of plant pathology / European Foundation for Plant Pathology》2012,132(1):17-21

Cultivated groundnut is susceptible to late leaf spot (LLS) caused by Phaeoisariopsis personata [(Berk. & M.A. Curtis) Aex] and resistance is low to moderate in the primary gene pool of groundnut. Closely related wild species in the secondary gene pool are highly resistant to the disease. All the closely related Arachis species are diploid and cultivated groundnut is a tetraploid. Utilization of diploid Arachis species to transfer LLS resistance is time consuming and cumbersome. New sources of Arachis hypogaea (also called synthetic groundnut) were developed at ICRISAT. These are tetraploids and the present investigation has shown that they are resistant to LLS.  相似文献   

Meiotic analysis of the hybrids between cultivated and synthetic tetraploid groundnuts     

Nalini Mallikarjuna  Sandhya Srikanth  Ravi K. Vellanki  Deepak R. Jadhav  Kumkum Das  Hari D. Upadhyaya 《Plant Breeding》2012,131(1):135-138

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Disturbance ecology benchmarks for Schima–Castanopsis forests in the central Himalayas     

Deepak B. Khatry 《Journal of Sustainable Forestry》2018,37(3):316-338

Roughly 2.8 billion people burn wood for basic energy needs, and traditional wood-fuel represents ~55% of global wood harvest. With increasing anthropogenic disturbance of natural forests, the “stability/fragility” paradigm of forest ecology is gradually being replaced by a “disturbance/recovery” paradigm. In order to understand effects of human-induced disturbances on natural forest ecosystems, and to plan for recovery of disturbed forests, appropriate metrics become necessary. Such metrics will aid in assessment and management of forests for carbon sequestration, biodiversity conservation, ecosystem health, and sustainability of natural resources. Such metrics are especially needed in “wood-fuel hotspots” of the world where over 275 million people live and harvest wood-fuel unsustainably. In this article, I provide metrics of human-induced disturbance in Nepal’s Schima–Castanopsis dominated forests and show relationships of disturbance intensity with forest structure and composition, site productivity potential, natural regeneration, and tree species diversity. Benchmark data were collected from survey of two protected reference forests and compared against three other forests representing a disturbance gradient. The Schima–Castanopsis association is a common dominant forest type in the warm temperate zone of the central Himalayas, and the findings from this study should have wider application.  相似文献   

Optimal rate and schedule of nitrogen fertilizer application for enhanced yield and nitrogen use efficiency in dry-seeded rice in north-western India     

Harmit Singh Thind  Yadvinder- Singh  Deepak Goyal  Varinderpal- Singh  Bijay- Singh 《Archives of Agronomy and Soil Science》2018,64(2):196-207

Dry direct-seeded aerobic rice (DSR) is an emerging attractive alternative to traditional puddled transplanted rice (PTR) production system for reducing labour and irrigation water requirements in the Indo-Gangetic plains (IGP) of India. The fertilizer N requirement of DSR grown with alternate wetting and drying water management may differ from that of PTR grown under continuous flooding due to differences in N dynamics in the soil/water system and crop growth patterns. Limited studies have been conducted on optimizing N management and application schedule for enhanced N use efficiency in DSR. Therefore, field experiments were conducted over 3 years in NW India to evaluate the effects of N rate and timing of its application on crop performance and N use efficiency. Interaction effects of four N rates (0, 120, 150, and 180 kg ha^?1) as urea and four schedules of N application on yield and N use efficiency were evaluated in DSR. The N schedules included N application in three equal split doses (0, 35 and 63, and 14, 35 and 63 days after sowing, DAS) and four equal split doses (0, 28, 49 and 70; 14, 28, 49 and 70 DAS). There was no significant interaction between N rate and schedules on grain yield. Significant response to fertilizer N was observed at 120 kg N ha^?1 and economic optimum dose for three equal split doses and skipping N at sowing was 130 kg N ha^?1. Highest mean grain yield of 6.60 t ha^?1 was obtained when N was applied in three equal split doses at 14, 35 and 63 DAS which was about 8.5% higher compared with N applied in four equal split doses at 14, 28, 49 and 70 DAS. Under the best N application schedule, agronomic N use efficiency (26 kg grain kg^?1), recovery efficiency (49%) and physiological efficiency (53 kg kg^?1) were comparable to the values reported in Asia for PTR. Results from our study will help to achieve high yields and N use efficiency in DSR to replace resource intensive PTR.  相似文献   

Diversity of Conopeptides and Conoenzymes from the Venom Duct of the Marine Cone Snail Conus bayani as Determined from Transcriptomic and Proteomic Analyses     

Rajesh Rajaian Pushpabai  Carlton Ranjith Wilson Alphonse  Rajasekar Mani  Deepak Arun Apte  Jayaseelan Benjamin Franklin 《Marine drugs》2021,19(4)

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