The Journal of Research ANGRAU

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INFLUENCE OF INM ON PHYSICAL PROPERTIES Table 10. Influence of integrated nutrient management treatments on yield in Rice - Rice cropping system Grain yield (kg ha -1 ) Treatment 2005-06 2006-07 Kharif Rabi Kharif Rabi T 1 2475 2025 2199 1545 T 2 3739 3920 2911 2801 T 3 3676 5405 3111 4150 T 4 3891 5200 3601 3397 T 5 4676 5890 3983 3801 T 6 4140 5795 3782 3889 T 7 4649 5665 3856 3582 T 8 3856 5375 2444 3815 T 9 4411 5230 2980 3546 T 10 4973 6070 4052 4480 T 11 4977 6915 4251 4244 T 12 4371 4745 3244 3333 SEm + 236 91 149 375 CD at 5 % 492 191 311 783 REFERENCES Bertrand, A.R. 1965. Rate of water intake in the field in: Measures of soil analysis by Black, C.A. part I Agronomy 9 : 374-390. Bhagat, R.M., Bhardwaj, A.K and Pradeep, K., Sharma. 2003. Long term Effect of Residue Management on soil physical properties, water use and yield of rice in north – western India, journal of the Indian Society of Soil Science, 51 : 111-117. Black, C.A. 1965. Methods of soil analysis Part, American Society of Agronomy, Wisconsin, USA. Density, water contents and microbial population of soil. Journal of Indian Society of soil science 40 :553-555. Chawla, K.L and Chabra, R. 1991. Physical properties of gypsum amended sodic soils as affected by long term use of fertilizers. Journal of Indian Society of Soil Science 39 :40-46 Jalota, S.K., Ramesh Khera and Ghuman, B.S. 1998. Measures in soil physics Narosa publishing house, New Delhi Katele, P., Leinweber, P and Menning, P. 1992. On the influence of soil organic mater on physical properties of soil. Agrobiological Research 45 : 18-27 Kumar, K., Meelu, O.P., Singh, Y and Singh, B. 1992. Effect of continuous application of organic manures on the physical properties of soils in rice-wheat cropping system. International Rice Research news Letter. 17 : 4-16. Tripathi, R.P., Gaur, M.K and Rawat, M.S. 2003. Puddling Effects on soil physical properties and rice performance under shallow water table conditions of tarai. Journal of the Indian Society of Soil Science, 51: 118-124 Vasanthi, D and Kumarswamy, K. 1999. Efficacy of vermicompost to improve soil fertility and rice yield. Journal of the Indian society of soil science 47 : 268-272 Vennila, R.K and Muthuvel, P. 1998. Effect of long term fertilization on physical properties of soils. Madras Agricultural Journal 85 : 290-292. 34
J.Res. ANGRAU 41(1) 30-38, 2013 GENETIC VARIABILITY, HERITABILITY AND CHARACTER ASSOCIATION STUDIES IN SWEET SORGHUM [Sorghum bicolor (L.) Moench] VEMANNA IRADDI, T. DAYAKAR REDDY, A. V. UMAKANTH, CH. RANI, D. VISHNU VARDHAN REDDY and M. H. V. BHAVE Department of Genetics and Plant Breeding Acharya N.G. Ranga Agricultural University, Hyderabad – 500 030 Date of Receipt : 03.11.2012 Date of Acceptance : 12.12.2012 ABSTRACT The present investigation on genetic variability, heritability and character association in large F 2 population of sweet sorghum was carried out at Directorate of Sorghum Research, Rajendranagar, Hyderabad. F 1 was generated during 2010 kharif and second filial generation in the following season. The mean and variance in respect of 14 quantitative characters in F 2 population indicated wide range of variability for most of the traits. However, variability range was low for the traits like nodes per plant, stem girth, brix per cent and total soluble sugars. The distribution pattern of this F 2 population revealed complementary interaction in the inheritance of days to 50% flowering, days to maturity, plant height, total biomass, fresh stalk yield, grain yield, brix per cent, juice yield, juice extraction per cent, total soluble sugars, sugar yield and bioethanol yield, while inheritance of nodes per plant and stem girth exhibited duplicate type of epistasis. Most of these characters except days to 50% flowering and days to maturity exhibited high heritability coupled with moderate to high genetic advance as per cent of mean indicating predominance of additive gene action in their genetic control. Further, correlation studies in F 2 generation revealed significant and positive correlation of fresh stalk yield with total biomass, grain yield, plant height, nodes per plant, stem girth, days to 50% flowering and days to maturity, while sugar yield with juice yield, fresh stalk yield, total biomass, grain yield, total soluble sugars, brix per cent, bioethanol yield and juice extraction per cent. These correlated traits can be effectively utilized in formulating indirect selection schemes. While path analysis studies revealed maximum positive direct effect of total soluble sugars and juice yield on sugar yield. The genetic improvement of quantitative characters in a crop species depends upon heritability pattern of the trait in question, nature and amount of variability present in the existing germplasm. Moreover sweet sorghum is also not an exception. Knowledge on the genetic advance that is expected by applying selection pressure to a segregating population is useful in designing effective breeding programme. Evaluation of these segregating progenies helps in estimation of various genetic and non-genetic components of variance. The study of variability provides an opportunity for selecting the desirable genotypes. Heritability is a fraction of variance in phenotypic expression that arises from genetic effects. The nature of the selection units and sampling errors also influences greatly the magnitude of heritability. The estimates of heritability in segregating generations help to know genetic variance, genotype - environment interaction and the progress expected from selection. The fresh stalk yield and sugar yield in sweet sorghum, as in other crops, is a complex quantitative character and its expression depends upon its component characters. The knowledge on the relative contribution of different yield components and their direct and indirect impact towards sugar yield is of immense value in selection of superior genotypes. Keeping the situations present in the foregoing paragraphs in view, the present investigation was under taken to study genetic variability, heritability and character association in sweet sorghum. MATERIALS AND METHODS The material for this experiment comprised of F 2 population of a cross derived from parents (27 B with SSV 84) having low and high sugar content developed at Directorate of Sorghum Research, Rajendranagar, Hyderabad during kharif 2010. The F 1 plants of this cross were grown during rabi 2010 - 11 and selfed to produce the F 2 seeds, which were evaluated during summer 2012. The F 2 segregating generations were grown in plots with twenty rows each in three separate blocks. These plants were sown in plots of twenty rows spaced 45 cm apart with a plant spacing of 15 cm with 2 - 3 seeds per hill in each row of 4 mt length. Thinning was done to retain one healthy plant per hill at 15 and 25 days after sowing. All the recommended package of practices was followed to raise a good and healthy crop. email: vemanraddi@gmail.com 35
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Page 3 and 4: CONTENTS PART I : PLANT SCIENCE Eff
Page 5 and 6: J.Res. ANGRAU 41(1) 1-4, 2013 EFFEC
Page 7 and 8: EFFECT OF FOLIAR APPLICATION OF NPK
Page 9 and 10: J.Res. ANGRAU 41(1) 5-13, 2013 NUTR
Page 11 and 12: NUTRIENT UPTAKE BY RICE CROP UNDER
Page 19 and 20: LAKSHMI et al Fig 1. Changes in C/N
Page 21 and 22: LAKSHMI et al Changes in C/N ratio
Page 23 and 24: LAKSHMI et al Table 3. Changes in h
Page 25 and 26: J.Res. ANGRAU 41(1) 20-29, 2013 INF
Page 27 and 28: PRASAD and PRASADINI of bulk densit
Page 29 and 30: PRASAD and PRASADINI to as high as
Page 31 and 32: PRASAD and PRASADINI Table 4 . Infl
Page 33: PRASAD and PRASADINI Table 8. Influ
Page 37 and 38: VEMANNA et al The range in mean val
Page 39 and 40: VEMANNA et al grain yield per plant
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Page 43 and 44: VEMANNA et al Singh, S. P and Khan,
Page 45 and 46: RAMANA et al RESULTS AND DISCUSSION
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Page 49 and 50: RAJANNA et. al. Table 2. Reasons fo
Page 51 and 52: RAJANNA et al the present findings
Page 53 and 54: NARASIMHA et al Table 1. Proximate
Page 55 and 56: NARASIMHA et al Maynard, L., Lossli
Page 57 and 58: RAMANA et al with small follicles m
Page 59 and 60: RAMANA et al Characteristics of fol
Page 61 and 62: Research Notes J.Res. ANGRAU 41(1)
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Page 69 and 70: SANDYARANI et al Table 2. Influence
Page 73 and 74: KUMAR et al Table 2. Effect of seed
Page 77 and 78: DEEPAK et al Table 2 Price spread a
Page 81 and 82: YAMINI et al Table 3. Estimates of
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LOKESH et al Table 1. Clustering pa
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LOKESH et al Table 4. Mean values o
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ABIRAMI et al Socio-economic Impact
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ABIRAMI et al socio-economic impact
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Research Notes J.Res. ANGRAU 41(1)
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VEMANNA et al Table 1. Discriminant
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VEMANNA et al total biomass, fresh
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RAO et al Table 1. Plant height, nu
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DEVI et al S.No Category Frequency
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DEVI et al extension contact and ma
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NIRMALA and VASANTHA earliness in a
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NIRMALA and VASANTHA adopted this t
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SUDHARANI et al Table 1. Genotypic
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SUDHARANI et al At genotypic level,
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NIRMALA et al weight of pods per pl
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NIRMALA et al Table 3. Cluster mean
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PUNYAVATHI and VIJAYALAKSHMI 6.5 6.
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PUNYAVATHI and VIJAYALAKSHMI REFERE
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KATTEL et al Table 1. Item Analysis
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RADHIKA et al Thus, the results of
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RAJU et al estimated daily dietary
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RAJU et al Table 3. Physico-chemica
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MINNIE et al Table 2. Estimates of
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Statement about ownership and other
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GUIDELINES FOR THE PREPARATION OF M
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ESSENTIAL REQUIREMENTS FOR CONSIDER
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