Browsing by Author "KUMAR, RAJESH"
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ThesisItem Open Access COMPATIBILITY OF HERBICIDE FERTILIZER MIXTURE FOR SIMULTANEOUS FOLIAR NUTRITION AND WEED CONTROL IN UPLAND RICE(JNKVV,JABALPUR, 1981) SHARMA, RAJESH KUMAR; KUMAR, RAJESHThesisItem Open Access CUSTOMERS AWARENESS AND WILLINGNESS TO PAY FOR HEALTH INSURANCE (AN EMPIRICAL STUDY OF SOLAN TOWN IN HAMACHAL PRADESH)(DEPARTMENT OF BUSINESS MANAGEMENT COLLGE OF HORTICULTURE DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY ; SOLAN, 2014) KUMAR, RAJESH; NEGI, Y. SThesisItem Open Access DEHYDRATION STUDIES IN APRICOT (PRUNUS ARMENIACA L.) GROWN UNDER MID HILL CONDITIONS OF HIMACHAL PRADESH(COLLEGE OF HORTICULTURE DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY ; SOLAN, 1999) KUMAR, RAJESH; SHARMA, K.DThesisItem Open Access ECONOMICS OF OFF-SEASON VEGETABLES : A CASE STUDY OF SHIMLA DISTRICT(COLLEGE OF FORESTRY DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI, SOLAN, 2001) KUMAR, RAJESH; SAMBHAR, O. PThesisItem Open Access EFFECT OF DIFFERENT METHODS AND HELIGHTS OF GRAFTING ON THE DEVELOPMENT OF ONE-YEAR OLD NURSERY PLANTS OF SPUR TYPE APPLES(DEPARTMENT OF POMOLOGY AND FRUIT TECHNOLOGY HIMACHAL PRADESH KRISHI VISHVA VIDYALAYA COLLEGE OF AGRICULTURE, SOLAN, 1996) KUMAR, RAJESH; ANANDA, S. AThesisItem Open Access EVALUATION OF SOME DETERMINATSE TYPE OF TOMATO VARIETIES IN PLATEAR REGION OF CHOTANAGPUR(Birsa Agricultural University, 1984) KUMAR, RAJESH; Tiwari, R.An experiment under randomized block bealon replicated three times was conducted in the department of Horticulture, Birsa Agricultural University, Kanke, Ranchi during Rabi' 83-84 to study the performance of ten determinate tomato varieties in the plateau region of Chotanagpur. The results obtained during the course of this investigation are summarized below 1 1. significant differences in plant heights were observed in different varieties and ultimately the variety s12 attained the maximum height (51.66 cm) followed by the varieties Punjab Kesheri and Roma respectively. The shortest plants were found in the variety Pusa Early Dwarf (36.56 cm). 2. so far as the thickness of main stem was concerned the variety, Punjab Kesheri emerged as having the thickest stem (4.72 followed by the varieties Roma and $12 respectively. The varieties Ks1 and Pusa Early Dwarf had the thinnest stem. 3. Different varieties recorded significant differences among themselves as regards number of branches. The variety Punjab Chhuhara had maximum number of branches (14.80) followed by the varieties Roma and Punjab Kesheri which were at par. The minimum number of laterals were recorded in the variety KS2 (9.26).ThesisItem Open Access Genetic diversity assessment for yield attributing and seed quality traits in aromatic rice (Oryza sativa L.)(RPCAU, Pusa, 2023) CHOUDHARY, DINESH; KUMAR, RAJESHThe research endeavour titled “Genetic diversity assessment for yield attributing and seed quality traits in aromatic rice (Oryza sativa L.)” delved into a captivating exploration involving 20 rice genotypes thoughtfully gathered from various corners of India and the esteemed IRRI, Philippines during the enriching 2022 kharif season. With a purposeful vision, this study set out to unravel the enigma of genotype effectiveness, quantifying genetic variability, estimating the heritability quotient, unlocking the potential of genetic advancement, and embarking on a journey of understanding the intricate genetic variations within aromatic rice genotypes, especially in the context of grain yield and its allied attributes. This profound experiment unfolded at the scenic Breeder seed production Farm, Dholi in Bihar, where the meticulously designed Complete Randomized Block Design laid the foundation for an enriching scientific exploration. The tapestry of findings woven from a meticulous variance analysis was nothing short of awe-inspiring, painting a vivid picture of diversity that thrived among the genotypes across the intricate canvas of 17 studied traits. Amidst this symphony of diversity, it was Samba Mahsuri, Taraori Basmati, Jasmine, Sonasal, and Katarni that emerged as the virtuoso performers, presenting the high significant notes of grain yield. Each brush stroke of data unveiled a mesmerizing dance of traits like days to 50% flowering, days to maturity, plant height, spikelet fertility, grain width, and grain length among others. These traits revelled in their variation, donning the cloak of phenotypic and genotypic coefficient of variation, with a dash of heritability and a glint of genetic advancement to add to the enchantment. The path coefficient analysis was akin to deciphering the very essence of the symphony, where seedling root length, seedling shoot length, and the rhythm of germination rate emerged as the maestros, directly influencing the crescendo of grain yield. The intricate interplay led by grain width elevated its importance, choreographing an intricate ballet where traits such as seedling dry weight, germination rate, vigour indices, and test weight swirled in a harmonious dance, ultimately nurturing the symphony of yield. In this intricate dance, the lead was taken by seedling root length, its direct influence paired with a mesmerizing indirect effect through other traits, crafting a tapestry of promise and potential. The elegant seedling shoot length gracefully followed suit, wielding its influence both directly and through a delightful partnership with other traits. The grand classification of genotypes into five clusters was a celestial alignment of the stars, where cluster IV reigned as the largest constellation, while clusters I, II, III, and V shone with their distinct radiance. Among these, the Cluster III showcased its brilliance in the realm of tiller traits and the elegance of grain length. The cluster I adorned itself with the jewels of seed yield and spikelet fertility, standing tall as a beacon of promise. In contrast, the fifth cluster exuded a sense of timelessness, embodying the delicate charm of flowering, maturity, and the very stature of the plants. In the tale of genetic divergence, the protagonists were none other than spikelet fertility and the passage of days to maturity, their contributions etching a legacy of significance. Amidst this narrative, seedling root length, seedling shoot length, and the tempo of germination rate emerged as the guiding stars for future breeding sagas, illuminating the path forward. The stars of promise, Samba Mahsuri and Taraori Basmati, took centre stage for their exceptional attributes, ready to script new chapters in the saga of rice breeding. As the curtain fell, clusters I and IV lingered in the spotlight, their higher cluster means in traits like spikelet fertility and days to maturity, echoing the promise of future possibilities. Thus, with grain yield as its centrepiece and other traits as supporting characters, this study danced through the intricate pathways of genetic exploration. Among these journeys, it was Cluster II that ventured farthest, uncovering the treasure trove of internal diversity. As the final chords were struck, clusters I and IV emerged as the heralds of selection potential, carrying the torch of traits like spikelet fertility and days to maturity, igniting the path for a future where aromatic rice stands as a testament to nature's diversity and human innovation.ThesisItem Open Access Quantitative and Qualitative Enhancement of Guava (Psidium guajava L.) cv. Chittidar through Foliar Feeding(RVSKVV, Gwalior(M.P.), 2012) KUMAR, RAJESH; Tiwari, RajeshThesisItem Open Access SHAREHOLDERS PERCEPTION OF WORKING OF URBAN CO-OPERATIVE BANK A CASE OF PARWANOO URBAN CO-OPERATIVE BANK (A STUDY OF THE SHAREHOLDERS MEMBERS AT PARWANOO BANK)(DEPARTMENT OF BUSINESS MANAGEMENT COLLGE OF HORTICULTURE DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY ; SOLAN, 2008) KUMAR, RAJESH; MEHTA, PIYUSHThesisItem Open Access STUDIES ON BACTERIAL ETIOLOGY AND THERAPY OF REPEAT BREEDER CATTLE AND BUFFALOES(Bihar Veterinary collage, 2001-02-12) KUMAR, RAJESH; SINGH, R.B.; AKHTAR, M.H.ThesisItem Open Access STUDIES ON BACTERIAL WILT OF TOMATO CAUSED BY RALSTONIA SOLANACEARUM (SMITH) YABUUCHI ET AL.(COLLEGE OF HORTICULTURE DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY ; SOLAN, 2003) KUMAR, RAJESH; SHARMA, SATISH KThesisItem Open Access STUDIES ON THE ROLE OF INSECTS IN THE POLLINATION OF RAPESEED (BRASSICA COMPESTRIS L. VAR SARSON)(HIMACHAL PRADESH KRISHI VISHVADIDYALAYA ; PLAMPUR, 1992) KUMAR, RAJESH; VAIDYA, D. NThesisItem Open Access VALIDATION OF SSR MARKERS ASSOCIATED WITH RESISTANCE TO BROWN SPOT DISEASE IN RICE(Dr.RPCAU, Pusa, 2021) BANSHIDHAR; KUMAR, RAJESHRice is cultivated in a wide range of agro-climatic and agro-ecological areas under dry to semi dry conditions and/or wet conditions. On account of its extensive cultivation it is adversely affected by a number of insect-pest and diseases. Among, these brown spot of rice caused by Cochliobolus miyabeanus is a disease of economic significance in the locale of study since it is the hotspot for the disease.The pathogen infects the crop on almost all above ground parts, from nursury to maturity stages and form small dark brown to purplish-brown spots on leaves that later enlarge into oval lesions with brown necrotic centers that are frequently surrounded by chlorotic halo. These spots appear even on seeds resulting in significant economic losses both in grain quality and yield. An immediate and judicious solution to these problem lies in breeding of high yielding resistant cultivars that could be strategically employed for disease management. Keeping this in view the present investigation entitled “Validation of SSR markers associated with resistance to brown spot disease in rice’’ was undertaken to phenotypically screen 300 genotypes of rice along with three checks for two consecutive season in Kharif 2019 and 2020 in controlled condition (glasshouse of department of Plant Pathology) as well as in field (Rice research farm, RPCAU, Pusa, Samastipur, Bihar) to identify resistant sources that could be either utilised directly as a resistant variety or as a parent in hybridisation programme to develop resistant varieties. These genotypes were also evaluated for eight morphological traits related with yield in Kharif 2019 and 2020 in field in augmented design to detect an association between disease resistance and morphological traits under study. Further, 15 most resistant and 15 most susceptible genotypes selected on the basis of AUDPC values were subjected to molecular characteristaion to support the phenotypic screening through genotypic evaluation using 18 SSR markers linked with brown spot disease in rice. The findings of molecular characterization were analysed for validation of these SSR markers in the selected population and to identify a significant marker trait association for the validated linked SSR markers. On the basis of phenotypic screening 18 genotypes were categorised as resistant, 90 genotypes were categorised as moderately resistant, 149 genotypes were categorised as moderately susceptible and 46 genotypes were categorised as susceptible. The mean values for various disease estimating parameters and morphological traits were utilized in various statistical analysis to derive all other complex statistics viz. standard deviation, coefficient of variation, genetic advance as percentage of mean, etc. The analysis of variance revealed significant differences among all genotypes for all the traits. This indicates that there is ample scope for selection of promising lines from the present gene pool for yield and disease resistance. The phenotypic coefficient of variation was slightly greater than the genotypic coefficient of variation (GCV) for all traits under study which reveals lower influence of environment on inherent potential of a trait and higher genetic inherent potential which is a prerequisite in any crop improvement programme. High estimates of heritability in broad sense and genetic advance as percent of mean was observed for each trait under study which inferred that selection for these traits promises improvement in desired direction of selection. From the association studies, it was observed that days to 50% flowering, days to physiological maturity and plant height had positive correlation with AUDPC while negative correlation with yield per plant. In contrary to this, panicle length, number of effective tillers per plant, number of grains per panicle and test weight had negative correlation with AUDPC while positive correlation with yield per plant. Number of grains per panicle, number of effective tillers per plant and test weight showed high direct positive effect on grain yield while days to physiological maturity showed the high direct negative effect on yield. Molecular characterization of selected genotypes showed that the amplified product of resistant genotypes with most of the primer pair were in accordance to the expected band size for a primer pair as per Gramene data base for SSR markers. Total of 6 primer pairs out of 18 primer pairs included in the study were validated and showed moderate to highly significant marker trait association. Thus, these markers could be used to differentiate the resistant lines from the susceptible one and could be used for marker assisted selection of brown spot resistance lines. The conclusive findings of present investigation pave the way for high ends breeding programmes aimed at long lasting field resistance against brown spot pathogen. The genotypes which were reported to be resistant can be used as donor in various resistance breeding programmes. Findings from the molecular characterisation and validation of primer pairs will precisely guide the further research activities in selection of markers for brown spot resistance genotyping. In a nutshell, the reported findings from present investigation will be quite helpful for students, breeders, farmers and others who are in academic and research activities as a good source of information in selecting improved genotypes for various breeding programmes.