Aug 2026· International Journal of Plant & Soil Science· 0 citations
Abstract
Cherry tomato (Solanum lycopersicum L. var. cerasiforme) germplasm maintained in West Garo Hills, Meghalaya, represents a useful source of morphological variability for selection. The present investigation evaluated 15 germplasm lines during 2023 at the Demonstration unit, Biotech KISAN Hub, Tura, using a randomised block design with three replications. Twenty-two horticultural characters were assessed to estimate phenotypic and genotypic coefficients of variation, broad-sense heritability and genetic advance. Analysis of variance revealed highly significant differences among the germplasm lines for the characters studied, indicating substantial variability. Phenotypic coefficients of variation were higher than the corresponding genotypic coefficients for all characters. Fruit weight recorded the highest phenotypic coefficient of variation (39.16%), while fruit yield per plant recorded the highest genotypic coefficient of variation (36.72%). The lowest phenotypic coefficient of variation was observed for days to first fruit harvest (4.43%), whereas the lowest genotypic coefficient of variation was also recorded for days to first fruit harvest (3.62%). Broad-sense heritability ranged from 28.73% to 94.54%, with the highest estimate for pericarp thickness. Genetic advance as a percentage of the mean ranged from 6.11 to 71.43%, with the highest value for fruit yield per plant. The observed combination of variability, heritability and genetic advance indicates useful scope for selection of promising cherry tomato germplasm under West Garo Hills conditions.
A study was undertaken with 20 genotypes of tomato (Solanum lycopersicum L.) to evaluate 16 quantitative and qualitative traits and 2 biochemical traits to estimate the genetic variability between yield and its components at the Centre for Protected Cultivation Technology, ICAR-IARI, New Delhi during 2020–2021 and 2021–2022. Among all genotypes, 596 were found promising for both yield and quality traits. Yield showed significant positive correlation with average fruit weight (28.99 g), pericarp thickness (0.37 cm), equatorial diameter of fruits (1.25 cm) and number of fruits (79.63). Formation of 5 clusters in dendrogram show the similarity among different traits. Genotype T-53 recorded the highest acidity (0.395 %) whereas genotype T-20 recorded the highest T.S.S. (8.2 0brix). Genotype 596 recorded the highest yield/1000 sq m (144.27 q)
P. K. Singh, R. Gautam, Zakir Hussain et al.· Progressive Horticulture· 0 citations
The study focused on evaluating 48 different tomato genotypes for 13 morphological traits to estimate the genetic variability, heritability and genetic advance at the Horticulture Research Centre of Sardar Vallabhbhai Patel University of Agriculture and Technology in Meerut, following randomized complete block design with three replications during two consecutive Rabi seasons (October 2022 and April 2024). The results of analysis of variance revealed that for all quantitative features included for both the season, analysis of variance indicated highly significant variations among genotypes. The phenotypic and genotypic coefficient of variation ranged from 4.92% to 16.42% and 4.23%to12.93% respectively. Higher PCV compared to GCV observed for all traits revealed that the influence of environment on traits. High heritability estimates obtained for day to first fruit set, days to first fruit maturity, plant height, days to first fruit harvesting, days taken germination, number of fruits per plant, fruit yield(t/ha), fruit length, fruit yield (kg/plant), fruit yield (kg/plot), High Genetic Advance for number of primary branch, plant height, fruit length, days to first fruit set. High heritability coupled with High Genetic Advance Observed for day to first fruit set, plant height, days to first fruit set, fruit length. As yield is the most important dependent trait, day to first fruit set, plant height, days to first fruit set, fruit length can be selected as selection parameters for further crop improvement programs.
Potato landraces maintained under local cultivation can provide useful variation for selection and conservation. The present study assessed natural variability among 25 indigenous Hirpora potato (Solanum tuberosum L.) selections under temperate conditions of the Kashmir Valley during kharif 2023. The experiment was conducted in a randomised complete block design with three replications, and growth, yield and quality traits were evaluated. Analysis of variance showed significant differences among selections for all studied traits except average tuber yield per plant. Phenotypic coefficients of variation were slightly higher than the corresponding genotypic coefficients across traits, while broad-sense heritability ranged from 73% to 94%. Genetic advance as a percentage of the mean was highest for number of tubers per plant (37.46), followed by number of stems per hill (33.17), number of eyes per tuber (29.58) and plant height (29.46). Total yield showed positive genotypic associations with average tuber yield per plant (0.8247), number of tubers per plant (0.7237), plant spread (0.3052) and number of stems per hill (0.2676). Path analysis indicated positive direct effects of average tuber yield per plant, number of tubers per plant, plant height, number of eyes per tuber and plant emergence percentage on total yield. These results indicate measurable variability within the Hirpora potato germplasm and identify traits that may assist selection and conservation of promising clones.
Tasaduq Shabir, B. Afroza, Asima Amin et al.· Journal of Advances in Biolo...· 0 citations
This experimental research was carried out to assess the components of variability for 11 quantitative parameters across 51 geographically diverse brinjal (Solanum melongena L.) strains. The research was carried out during summer season, 2024 at Horticultural Research Centre, Department of Horticulture, Chauras Campus, H.N.B. Garhwal University, Srinagar Garhwal, Uttarakhand India. The experimental results revealed that, significant difference was recorded almost all the parameters studied. The results revealed that, the PCV and GCV was found higher for the traits like number of primary branches per plant, number of secondary branches/plant, fruit length, fruit diameter, number of fruits per plant and fruit yield/plant. Heritability in broad sense were ranged from 38.56% to 98.17%, almost all the characters showed high heritability. The highest GAM estimates were recorded for almost all the characters. Therefore, results indicated that predominance additive gene action in most of the trait expression, and direct simple selection through phenotypic expression is a good chance for genetic improvement.
Abhay Singh, Khulakpam Naseeruddin Shah, D. Rana et al.· Journal of Eco-friendly Agri...· 0 citations
Tomato (Solanum lycopersicum L.) is one of the most economically important vegetable crops
worldwide, with a wide array of genetic diversity in morphological traits. Understanding this
diversity is crucial for breeding programs aimed at developing improved varieties with
desirable traits. The present investigation was undertaken to assess genetic variability using
morphological markers among 40 tomato accessions, comprising 30 accessions from the
National Center for Genetic Resources and Biotechnology, five from local markets in Ibadan,
three varieties from Benue and Oyo States, and two varieties obtained from seed companies.
The experiment was conducted using a completely randomized design (CRD) with three
replicates. Significant variations (p < 0.05) were recorded for several traits, including primary
leaf length and width, number of leaves, plant height days to first fruiting, number of
inflorescences, and the number of leaves under the first inflorescence. In the principal
component analysis, the first three components collectively explained 74.80% of the variation
observed among the 40 accessions. Cluster analysis grouped the accessions into two major
clusters: cluster I, which contained two sub-clusters comprising 10 accessions, and cluster II,
which contained four sub-clusters comprising 30 accessions. This study identified four
accessions, namely NGB/00717, NGB/00714, NGB/00696, and NGB/00735b, that exhibited
superiority in important vegetative and yield traits. A sufficient level of diversity for future
tomato breeding programs was identified.
V. I. Ajie· JOURNAL OF BIOLOGY AND GENET...· 0 citations
Sunflower (Helianthus annuus L.) is an important oilseed crop, and the identification of genetically diverse and superior germplasm is essential for its improvement. The present investigation was undertaken to evaluate genetic variability, characterise sunflower germplasm using Distinctness, Uniformity and Stability (DUS) descriptors, and determine the association between seed yield and its contributing traits. A total of 46 sunflower genotypes, comprising 44 test genotypes and two checks, were evaluated during Kharif 2025 at the Oilseeds Research Station, Latur, Maharashtra, India. The genotypes were evaluated for ten quantitative traits, namely days to 50% flowering, days to maturity, plant height, head diameter, 100-seed weight, volume weight, hull content, seed filling percentage, oil content and seed yield per plant. Analysis of variance revealed highly significant differences among the genotypes for all the quantitative traits, indicating substantial genetic variability. The mean performance of the genotypes showed considerable variation for flowering, maturity, plant height, head diameter, seed characteristics, oil content and seed yield. High heritability coupled with high genetic advance as per cent of mean was observed for plant height, head diameter, 100-seed weight, volume weight, hull content, seed filling percentage, oil content and seed yield per plant. Genotypic and phenotypic correlation analyses revealed significant positive associations of seed yield with head diameter, plant height, 100-seed weight and volume weight, with head diameter showing the strongest association. Morphological characterisation using DUS descriptors revealed variation among the genotypes for several qualitative traits related to hypocotyl pigmentation, leaf characteristics, head attitude, ray floret characteristics and seed traits. The evaluated genotypes differed for leaf colour, leaf shape, leaf serration, seed shape, seed coat colour and seed coat stripes, whereas some descriptors showed uniform expression across the genotypes. Based on quantitative performance and morphological characteristics, RHAGPR-3, RHA 274, 93 R, RCB-5, OPH-107, CMS-90-3B, 143 R and HOC-20R were identified as promising genotypes. The present study identified substantial genetic and morphological variability among the evaluated sunflower genotypes and provided useful genetic resources for selection and future breeding programmes aimed at improving seed yield and associated traits.
R. Chinmay, S. Pole, M. V. Dhuppe et al.· International Journal of Pla...· 0 citations
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