Vasishth, Amol (Dr.)ROY, MAITRYBijalwan, Arvind(Dr.) (Co-advisor)2023-02-072023-02-072021https://krishikosh.egranth.ac.in/handle/1/5810193366M.Sc. ForestryThe present investigation was carried out to study the morphological and yield variability in aloe vera and to identify the genotypes suitable for mid hills of Uttarakhand. Fifteen genotypes of Aloe barbadensis were planted in Randomized Block Design with three replications. Significant variations were recorded among these genotypes for morphological and yield attributes. Among the fifteen genotypes, IC-111280 and IC-471889 showed better performance than other for most of the parameters. Out of these, IC- 111280 showed best performance in plant height, number of leaves per plant, leaf length, leaf width, number of suckers per plant, number of thorns per leaf, plant weight, number of harvestable leaves per plant, gel weight per plant, peel weight per plant, leaf weight per plant. The difference between phenotypic coefficient of variance and genotypic coefficient of variance for all of the characters was narrow which clarifies that the variability that exists between them is mainly because of the difference in their genetic makeup suggesting that variation due to environment is low. High heritability coupled with high genetic advance was recorded for plant weight, leaf weight per plant and gel weight per plant indicating additive genetic control for these traits. Thus selection based on these phenotypic characters can be used for breeding. Phenotypic and genotypic correlation coefficient showed that gel weight per plant had positive and significant correlation with plant height, number of leaves and number of thorns per leaf. Positive and significant correlation of characters with gel weight is important for crop improvement. Among the fifteen genotypes, IC-111280 and IC-471889 gave 58.8 and 57.9 % higher gel yield, respectively than the check (mean of genotypes). Therefore genotypes IC-111280 and IC-471889 can be promoted among the farmers of mid hill of Uttarakhand for Aloe vera cultivation.EnglishThesis