Browsing by Author "S.K. Jain"

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Assessment of genetic variability, heritability and genetic advance in chilli (Capsicum annuum L.)
(Society for Plant Research, 2017) Ashish Kumar Maurya; M.L. Kushwaha; S.K. Jain; Manish Kumar Maurya; Vikas Kumar Jain
The present experiment was carried out at vegetable research center of G B Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during the spring summer season of 2014 in randomized block design with three replication to assess genetic variability, heritability and genetic advance as percent of mean for various growth, yield and quality traits. Data were recorded on plant height, canopy width, days to 50% flowering, days to 50% fruiting, number of fruits per plant, average fruit weight, stalk length, fruit body length, fruit yield per plant, ascorbic acid content, TSS, Anthracnose incidence, LCV incidence and total fruit yield per hectare. Analysis of variance revealed significant differences among the genotypes for all the traits studied indicating the presence of sufficient variability in the studied material. The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) and the difference between PCV and GCV was narrow for most of the characters revealing little influence of the environment in the expression of these traits. High magnitude of PCV and GCV were observed for days to 50% flowering, number of fruits per plant, average fruit weight, fruit yield per plant, fruit body length, ascorbic acid, TSS, Anthracnose, leaf curl virus incidence and total fruit yield per hectare suggesting the existence of wide range of genetic variability in the genotypes for these traits. High heritability coupled with high genetic advance as percent of mean was observed for all the traits except canopy width and stalk length revealed these traits are under the control of additive gene action and lower influence of environmental factor in the expression of these traits with possibility for genetic improvement through simple selection. © 2017, SPR, All Rights Reserved.
Character association and path analysis studies for yield and yield attributes in green chilli (Capsicum annuum L.)
(Society for Plant Research, 2017) Ashish Kumar Maurya; M.L. Kushwaha; S.K. Jain; Santosh Kumar
Present investigation was carried out in spring summer season of 2014 using 30 chilli genotypes to elucidate the association of various growth, yield and quality traits to develop a reliable set of traits for indirect selection. The experiment was conducted in randomized block design using three replications. The data were observed from five randomly selected plants from each replication for thirteen quantitative traits. The genotypic coefficients were higher in the magnitudes relative to corresponding estimates of phenotypic coefficients, which indicated high heritability of the traits under study. The fruits yield per plant exhibited highly significant positive correlation with number of fruits per plant, average fruit weight and fruit body length, indicating the useful of these traits for improving upon fruit yield in chilli. Whereas it showed significantly negative correlation with days to 50 percent flowering and days to 50 percent fruiting inferred that early flowering and fruiting plants had higher yield over those having late flowering and fruiting. Path coefficient analysis revealed that the highest direct effect on fruit yield per plant was exerted by average fruit weight followed by number of fruits per plant, showing its more accountability for higher fruit yield. Therefore, it may be possible to improve fruit yield and quality by selecting the accessions on the basis of number of fruits, average fruit weight and fruit body length. © 2017, SPR, All Rights Reserved.
Estimation of per se performance of chilli(Capsicum annuum L.) genotypes for dry fruit yield and its contributing traits
(Society for Plant Research, 2017) Ashish Kumar Maurya; M.L. Kushwaha; S.K. Jain; Manish Kumar Maurya; Yadav Ram
The present experiment was undertaken to evaluate the performance of chilli genotypes with a check, promising cultivar PC 1 to find the best one, during spring summer season of 2014 at Vegetable Research Center of GBPUAT, Pantnagar (Uttarakhand) using Randomized Block Design with three replications. Observations were recorded on various growth and yield attributing traits viz. number of primary branches, stem diameter, number of petals, days to 50% ripening, periferi of fruit, pericarp thickness, average fruit weight, number of seeds per fruit, weight of seeds per fruit, seed yield per plant, 100 seed weight and total dry fruit yield (q/ha) from five selected plants in each replications. There was found significant variation among all the genotypes for different characters under study. The genotype PC 20132 was found most promising as it produces maximum average fruit weight, 100 seed weight and significantly more dry fruit yield (29.32 q/ha) than check cultivar PC (26.30 q/ha). Thus the genotype PC 20132 may be used as commercial cultivation under tarai region of Uttarakhand. Beside this, the genotype PC 20132 and seven other genotypes which were statistically similar to the check in yield potential may be further evaluate in multilocation trials to judge its yield performance in other locations to find best one or more for commercial cultivation in other parts of the country. © 2017, SPR, All Rights Reserved.
Possibility of hydrological connectivity between Manasarovar Lake and Gangotri Glacier
(Indian Academy of Sciences, 2019) S.P. Rai; D. Singh; R. Saini; D.S. Rathore; S. Kumar; S.K. Jain; N. Pant
Considering the hydrological and religious significance of the Ganga River and the Manasarovar Lake in India, the present study has been devised to investigate the data related to the place of origin of the Ganges and to investigate the likely connection between waters of the two systems. Satellite data was employed to develop maps and find out the possibility of surface connectivity, whereas isotopic and chemical data, obtained from the field samplings and the published research literatures were used to investigate the possibility of subsurface connectivity of the Gangotri Glacier water with that of the Manasarovar Lake. Topographically, both the water systems are located in different catchment zones, separated by high mountain ridges; rejecting any possibility for the surface connectivity. Similarly, there are significant variations in isotopic and physiochemical properties of the water, suggesting no possibility of surface or sub-surface connectivity between water of the two systems. © 2019, Indian Academy of Sciences.
Postpartum amenorrhoea in rural eastern Uttar Pradesh, India
(1998) K.N.S. Yadava; S.K. Jain
This paper calculates the mean duration of the postpartum amenorrhoea (PPA) and examines its demographic, and socioeconomic correlates in rural north India, using data collected through 'retrospective' (last but one child) as well as 'current status' (last child) reporting of the duration of PPA. The mean duration of PPA was higher in the current status than in the retrospective data; the difference being statistically significant. However, for the same mothers who gave PPA information in both the data sets, the difference in mean duration of PPA was not statistically significant. The correlates were identical in both the data sets. The current status data were more complete in terms of the coverage, and perhaps less distorted by reporting errors caused by recall lapse. A positive relationship of the mean duration of PPA was found with longer breast-feeding, higher parity and age of mother at the birth of the child, and the survival status of the child. An inverse relationship was found with higher education of a woman, higher education of her husband and higher socioeconomic status of her household, these variables possibly acting as proxies for women's better nutritional status.; The differentials of the mean duration of postpartum amenorrhea (PPA) were investigated in a study conducted in five villages in the Varanasi district in Uttar Pradesh State, India, in 1995. Information was collected from 1060 mothers about their last birth and from 767 mothers about the penultimate birth. Following a peak at 1 month's duration, the PPA distribution showed heaping at durations of multiples of 6. The mean duration of PPA was 7.2 months after the birth of the last child and 7.7 months when the duration between the date of the last birth and the survey date was used for the analysis. Survival analysis indicated that the chance of resumption of menses at 3 months postpartum was 44% after the birth of the last child and 49% for the last but one child. The shorter duration of PPA in the latter group may reflect differences between retrospective and current status data quality. Multivariate analysis revealed that the duration of PPA increased with longer durations of breast feeding, higher parity and maternal age, and if the child survived to the next birth or the time of the survey. PPA duration was negatively associated with maternal and paternal education, higher socioeconomic status, and residence in a pukka house--variables that may be proxies for improved maternal nutrition status.