Ravi Ranjan

Ravi Ranjan
Bihar Agriculture University · Dept. of Molecular Biology and Genetic Engineering

PhD (Biotechnology)

About

104
Publications
24,412
Reads
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347
Citations
Additional affiliations
November 2014 - present
Bihar Agriculture University
Position
  • Professor (Assistant)
September 2013 - November 2014
Vidya Pratishthan's School of Biotechnology, Baramati, India
Position
  • Scientist (Plant Biotechnology)
August 2012 - August 2013
Acharya N G Ranga Agricultural University
Position
  • Research Associate
Education
July 2005 - June 2007
Gulbarga University
Field of study

Publications

Publications (104)
Article
Full-text available
Pigeonpea (Cajanus cajan (L) Millsp.) is an important food legume crop of rain fed agriculture in the arid and semiarid tropics of the world. It has deep and extensive root system which serves a number of important physiological and metabolic functions in plant development and growth. In order to identify genes associated with pigeonpea root, ESTs...
Article
Full-text available
Pigeonpea (Cajanus cajan (L) Millsp.) is a drought tolerant legume widely grown in the arid and semi-arid tropics of the world which possesses a deep and extensive root system that succors a number of important physiological and metabolic functions to cope with drought. Application of available functional genomics approaches to improve productivity...
Article
Full-text available
Viruses cause many severe plant diseases, resulting in immense losses of crop yield worldwide. Therefore, developing novel approaches to control plant viruses is crucial to meet the demands of a growing world population. Recently, RNA interference (RNAi) has been widely used to develop virus-resistant plants. Once genome replication and assembly of...
Article
Full-text available
Objective The Potato Leaf Roll Virus (PLRV) is one of the most devastating virus causing severe yield losses worldwide in potato. The comprehensive observations were made to study the PLRV infestation in major potato growing areas of Bihar (India) and further detailed molecular basis of PLRV aggravation was established. Results Although aphids pop...
Article
Potato leafroll virus (PLRV) uses powerful molecular machines to package its genome into a viral capsid employing ATP as fuel. Although, recent bioinformatics and structural studies have revealed detailed mechanism of DNA packaging, little is known about the mechanochemistry of genome packaging in small plant viruses such as PLRV. We have identifie...
Article
Lentil is one of the most nutritious pulse crops known as masur and grown as a rainfed crop throughout the world in winter season. It is rich in protein, starch, micronutrients and dietary fiber. In the global scenario, India ranked first in the area and second in the production with Bihar being one the major lentil growing state. The majority of t...
Chapter
Full-text available
The present book is collections of recent original research in the field of Biological Sciences. It is an assemblage of up-to-date information of rapid advances and developments taking place in the field of Marine Biology and Ecology. The book is unique collections of 18 chapters, which discusses exhaustive studies on different areas of Marine Biol...
Article
Full-text available
Geminiviruses infect many crop plants, and are limiting factors for veg-etable crop production. Begomoviruses (Geminiviridae) cause typical symptoms of leaf curling and puckering in nightshade (Solanum nigrum), a seasonal weed in Bihar, India. To investigate if nightshade was an intermediate host for begomo-virus, virus DNA was extracted and charac...
Article
Full-text available
India is a nation which has got huge scope for modernization. The pace of increasing modernization in India coupled with its ever increasing human population is posing a very serious impact on environment mainly due to global warming. Abrupt rainfall conditions coupled with drought conditions prevailing during the Kharif season often hampers paddy...
Article
Full-text available
Geminiviruses infect many crop plants, and are limiting factors for vegetable crop production. Begomoviruses (Geminiviridae) cause typical symptoms of leaf curling and puckering in nightshade (Solanum nigrum), a seasonal weed in Bihar, India. To investigate if nightshade was an intermediate host for begomovirus, virus DNA was extracted and characte...
Preprint
Full-text available
Potato leaf roll virus (PLRV) uses powerful molecular machines to package its genome into a viral capsid employing ATP as fuel. Although, recent bioinformatics and structural studies have revealed detailed mechanism of DNA packaging, little is known about the mechanochemistry of genome packaging in small plant viruses such as PLRV. We have identifi...
Chapter
Full-text available
Chickpea (Cicer arietinum L.) is one of the most important legumes for consumption in India as well as worldwide. In grain legumes, it ranks second in acreage and third in production with productivity of 913 kg/ha. India is the largest producer of chickpea, accounts 70.9% of the world cultivated area and produces 67.1% of the total world production...
Article
Plant viruses cause various disease in crops and are responsible for huge economic losses. Understanding their mode of infection and spread is crucial for developing control strategies. Genome packaging is an important step in the process of viral maturation. Three systems of viral genome packaging are known till date. The type I packaging system,...
Chapter
Pigeonpea [Cajanus cajan (L.) Millsp.] is a key source of some of the vital nutritive components such as proteins, carbohydrates, vitamins, and minerals. Its split dehusked grains form an important portion of diet when consumed with cereals, especially among the small and marginal farmers who earn their livelihoods from subsistence agriculture. Pig...
Preprint
Full-text available
Objective The Potato Leaf Roll Virus (PLRV) is one of the most devastating virus causing severe yield loss worldwide in potato. The comprehensive observations were made to study the PLRV infestation in major potato growing areas of Bihar (India) and further detailed molecular basis of PLRV aggravation was established. Results Although population o...
Preprint
Full-text available
Objective: The Potato Leaf Roll Virus (PLRV) is one of the most devastating virus causing severe yield losses worldwide in potato. The comprehensive observations were made to study the PLRV infestation in major potato growing areas of Bihar (India) and further detailed molecular basis of PLRV aggravation was established. Results: Although aphids po...
Preprint
Full-text available
Objective: The Potato Leaf Roll Virus (PLRV) is one of the most devastating virus causing severe yield losses worldwide in potato. The comprehensive observations were made to study the PLRV infestation in major potato growing areas of Bihar (India) and further detailed molecular basis of PLRV aggravation was established. Results: Although aphids po...
Preprint
Full-text available
Objective: The Potato Leaf Roll Virus (PLRV) is one of the most devastating virus causing severe yield losses worldwide in potato. The comprehensive observations were made to study the PLRV infestation in major potato growing areas of Bihar (India) and further detailed molecular basis of PLRV aggravation was established. Results: Although aphids po...
Article
Full-text available
Aim: To screen and characterize pigeonpea genotypes using morpho-physiological, biochemical and molecular traits. Study Design: The field trial was conducted using the Randomized Block Design (RBD) while Completely Randomized Design was used for laboratory and pot screening experiments. Place and Duration of Study: The research trial was conducted...
Article
Full-text available
The present study was conducted to evaluate the seed quality of chickpea (cv. PG-186) and lentil (cv. HUL-57) seed samples collected from randomly selected districts of different agroclimatic zones of Bihar. The seed quality was assessed based on their physiological (seed moisture, seed germination, seedling length, vigour index, etc.) and biochemi...
Article
Full-text available
Chickpea (Cicer arietinum L.) is the second most important food legume crop after common bean (Phaseolus vulgarisL.). It isone of the most important rabi pulse crop in India and contributes to 20% of the total pulse production in the world. India ranks first in chickpea production in the world followed by Australia, Myanmar and Pakistan. It is one...
Article
Full-text available
The present investigation was carried out on thirty-six lentil genotypes at the farm of Bihar Agricultural University, Sabour, Bhagalpur in 2018-19. The genetic divergences were examined using Mahalanobis D2 statistics for two dates of sowing i.e normal sown and late sown condition. The presence of variation among genotypes was revealed by ANOVA fo...
Chapter
Full-text available
CHICKPEA (Cicer arietinum L.) is widely cultivated in the world covering more than 50 countries spread over Asia, Africa, Europe,Australia, North America and South America. It is the second mostimportant food legume crop after common bean (Phaseolus vulgaris L.). In India, chickpea is cultivated almost in all parts of the countrymainly as a rainfed...
Article
Full-text available
The present investigation was carried out at rice research farm ofBihar Agricultural University, Sabour (Bhagalpur), Bihar in kharif, 2019 to assess the extent of genetic variability for yield and yield related traits and to estimate heritability and genetic advance in rice genotypes for drought tolerance. The analysis of variance revealed highly s...
Article
Full-text available
Erratic monsoon causing flood in the river Ganga greatly affect the cultivation of pigeonpea in most of the regions of Bihar as they lie in and around the Ganga basin. Given the highly sensitive nature of the early stages of the crop there is dire need to identify and develop tolerant cultivars and parents for the stress breeding program. In this e...
Article
Full-text available
The genetic diversity was estimated using seventy two genotypes of rice in a randomized block design with three replications at the rice research farm of Bihar Agricultural University, Sabour (Bhagalpur) during Kharif, 2019-20 to determine the contribution of fifteen quantitative traits to the total variability in rice using Principal component ana...
Article
Full-text available
The present study was aimed to estimate the extent of genetic variability for yield & its components traits, genetic association, path coefficient analysis in forty-five genotypes of chickpea (Cicer arietinum L.). The experiment was conducted at Pulse research farm, Bhitti, Bihar Agricultural University, Sabour during Rabi season 2018-19. High valu...
Article
Full-text available
Polerovirus (Family-Luteoviridae) are one of the most destructive viruses causing detrimental diseases in vegetable crops in tropical regions of the world including India. Four species viz. potato leaf roll virus (PLRV), potato virus Y(PVY), potato virus X(PVX) and potato virus S(PVS) are known to cause different diseases in potato crops. Of the va...
Article
Full-text available
The study of genetic diversity among Lathyrus sativus L. may give fundamental insights into extent of genetic variation and provide options to meet the climate change challenge. 20 SSR loci were employed to assess the genetic diversity of 32 grasspea genotypes. Eleven markers proved to be polymorphic across examined genotypes in aggregation to allo...
Article
Full-text available
Aims: The study aims to highlight the simple optimisation, inexpensive and rapid procedure for DNA isolation from tough leaves (Palmyra palm) without compromising the yield and purity of DNA. Study Design: Leaf of palmyra palm (Borassus flabellifer) was used to conduct the experiment followed by laboratory analysis, DNA extraction and PCR amplifica...
Article
Full-text available
Chickpea (Cicer arietinum L.) is the 2 nd largest grain-legume cropin the world and is an important rabi pulse crop of Indo Gangetic Plain. India ranks first in chickpea production in the world followed by Australia, Myanmar and Pakistan. It is one of the major pulse crops in Bihar. The present investigation was undertaken using forty genotypes of...
Article
Full-text available
Forty genotypes of chickpea were evaluated for assessing genetic divergence for different quantitative characters for improving yield potential of chickpea by using Mahalanobis D2 statistics. The genotypes were grouped into seven clusters suggesting considerable amount of genetic diversity in the material. The intra-cluster D2 value ranged from 0.0...
Conference Paper
Full-text available
Chickpea (Cicer arietinum L.) is an important pulse crop of India which is grown during Rabi season. India is largest producer of chickpea in the world sharing 65.2% of area and 65.4% of production. Chickpea was grown in 9.93 million ha area, with production of 9.63 million tons and productivity of 974 kg/ha. Chickpea seeds contain 17.7 per cent pr...
Conference Paper
Full-text available
The present investigation was carried out in Rabi, 2017-18 at Bihar Agricultural University, Sabour (Bhagalpur) to study the genetic divergence among forty genotypes of chickpea for different quantitative characters by using Mahalanobis D2 statistics . The genotypes were grouped into seven clusters suggesting considerable amount of genetic diversit...
Article
Full-text available
An experiment was conducted during Rabi 2016-17 at Pulses Research farm, Bihar Agricultural University, Sabour (Bhagalpur) to study the existing genetic diversity in thirty six Desi chickpea genotypes. All the genotypes were grouped into eight clusters as per Ward minimum variance method revealed the presence of considerable amount of genetic diver...
Article
Full-text available
Drought is one of the most common environmental stresses that affect growth and development of plants. Drought can also influence plants in terms protein changes, antioxidant production, osmotic adjustment, pollen sterility, grain loss, and Abscisic acid synthesis, which are much importance for grain/seed development. The pollen development is arre...
Article
Full-text available
Forty diverse genotypes of Indian mustard [Brassica juncea (L.) Czern & Coss] were evaluated for seed yield and its yield components (four-teen characters) under late sown condition. Both phe-notypic and genotypic coefficients of variation were higher for important traits including seed yield per plant, number of pods per plant, leaf area index, se...
Article
Full-text available
Forty diverse genotypes of Indian mustard [Brassica juncea (L.) Czern & Coss] were evaluated for seed yield and its yield components (fourteen characters) under late sown condition. Both phenotypic and genotypic coefficients of variation were higher for important traits including seed yield per plant, number of pods per plant, leaf area index, seco...
Article
Full-text available
Agrobacterium tumefaciens has been an invaluable system in studying the fundamental biology of host pathogen interaction and plant biotechnology due to its unique ability to transfer DNA into the plant genome. It is widely used for transformation in dicots and later on used some monocots. Agrobacterium mediated transformation under laboratory condi...
Article
Full-text available
An experiment was conducted during Rabi, 2016-17 at Pulses Research farm, Bihar Agricultural University, Sabour (Bhagalpur), Bihar to study the correlation and path analysis for grain yield and its component characters in thirty six desi chickpea genotypes. The correlation study revealed that grain yield per plant was found significantly and positi...
Article
An experiment was conducted during Rabi 2016-17 at Pulses Research farm, Bihar Agricultural University, Sabour (Bhagalpur) to study the existing genetic diversity in thirty six Desi chickpea genotypes. All the genotypes were grouped into eight clusters as per Ward minimum variance method revealed the presence of considerable amount of genetic diver...
Article
Full-text available
Twenty-one progenies with their seven parent cultivars of Avena sativa L. (2n = 6x = 42) along with two checks were taken with a view to estimate genetic components of variance indicating different types of gene effects. The present work aimed at estimating the genetic component of variance in oats involving in the character grain yield, its compon...
Article
Full-text available
The increasing demands for better living environments have stimulated the development of consumer products with antimicrobial properties. Several new antibacterial and antifungal agents have been introduced recently, whereas such new materials still have to fulfil the rather stringent requirements for real applications. Polyaniline is one of the mo...
Article
Full-text available
Grass pea (Lathyrus sativus) is a legume crop having great potential for global food security due to its exceptional tolerance to drought and flooding. It has a very hardy and penetrating root system hence can be grown on a wide range of soil types. Compared with other legumes, it is resistant to many pests including storage insects. This protein-r...
Article
Full-text available
Twenty-one progenies with their seven parent cultivars of Avena sativa L. (2n = 6x = 42) along with two checks were taken with a view to estimate genetic components of variance indicating different types of gene effects. The present work aimed at estimating the genetic component of variance in oats involving in the character grain yield, its compon...
Article
Full-text available
The basic leucine (Leu) zipper (bZIP) transcription factor family is characterized by a highly conserved bZIP domain of 60-80 amino acids in length and composed of two parts: a basic region and a Leu zipper. bZIP transcription factors are also considered as important regulators in signaling and responses to abiotic as well as biotic stresses. Genom...
Article
The availability of an array of molecular markers allowed comparing the efficiency of two of these marker systems for diversity analysis. In the present investigation, two multiloci markers, RAPD (20 primers) and ISSR (20 primers) and also eight morphometric traits were used to assess the genetic diversity among 38 doubled haploid lines and their p...
Article
Available online xxxx Chickpea (Cicer arietinum L.) and pigeonpea [Cajanus cajan L. (Millsp.)] play an important role in mitigating protein malnutrition for millions of poor vegetarians living in regions of the semi-arid tropics. Abiotic stresses such as excess and limited soil moisture (water-logging and drought), heat and chilling (high and low t...