Genetic diversity among tomato

The present research work was undertaken to determine genetic variations among the isolates of Trichoderma spp. obtained from rhizosphere regions of ground nut, redgram, tomato fields using RAPD technique for evaluating their efficiency as biopesticides against major soil borne pathogens (Sclerotium rolfsii, Rhizoctonia solani, Macrophomina phaseolina, Fusarium oxysporum).

7p chauchaungayxua8 03-10-2020 11 2   Download

A set of 24 cross combinations were developed through Line × Tester mating system involving 11 diverse genotypes of tomato and observations were taken for yield and yield attributing characters to study the extent of heterosis in the crosses. Tomato is an autogamous crop and has originated in the Peru region of South America. The experiment was conducted in Randomized Complete Block Design (RCBD) with three replications.

8p angicungduoc6 22-07-2020 12 2   Download

Fourteen genotypes of cherry tomato were evaluated under modified naturally ventilated polyhouse at the Experimental Farm, Department of Vegetable Science and Floriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur during autumn winter season, 2017-2018 for marketable yield and its component traits to assess the morphological diversity among the genotypes. Based on the mean performance, genotypes viz.

9p angicungduoc5 14-06-2020 10 1   Download

As the information, on the nature and magnitude of variability for yield and other characters present in germplasm pool owing to genetic and non-genetic causes, is an important basic pre-requisite for starting any systematic breeding programme to identify superior lines or varieties. Thus, this investigation was undertaken involving 200 genotypes of tomato (Solanum lycopersicum L.) with following objective as genetic divergence studies in tomato. Genetic diversity among 200 tomato genotypes was worked out using D2 statistics.

7p trinhthamhodang1213 02-06-2020 17 1   Download

The present experiment was carried out to investigate yield and quality traits in tomato, in order to generate information regarding the extent of genetic variability, heritability and genetic advance at Regional Research Station, Uchani, Karnal, CCS Haryana Agricultural University, Hisar, Haryana during autumn seasons of 2016 and 2017 involving 43 genotypes. The analysis of variance indicated significantly higher difference among the treatments for all the traits studied indicating presence of substantial amount of genetic variability among the materials studied.

7p trinhthamhodang1213 30-05-2020 17 0   Download

A field experiment was laid out in a Randomized Complete Block Design with 27 genotypes of tomato in three replications. The present investigation is to find out the genetic diversity among tomato genotypes for fruit yield and its attributing characters. Mahalanobis distance (D2 ) was used to estimate the genetic distance between pair of clusters.

8p chauchaungayxua4 22-03-2020 5 1   Download

Twenty four tomato genotypes were evaluated during June to September 2018 at Horticulture College and Research Institute, Periyakulam with an aid to estimate genetic diversity for 15 quantitative and qualitative characters. Using Mahalanobis D2 statistics method, the 24 genotypes were grouped into three clusters, indicating the presence of diversity among the genotypes for different traits. The cluster III containing 17 genotypes followed by cluster II and I comprises of four and three genotypes respectively (Table 5). The highest intra-cluster distance was recorded in cluster III (60.

7p chauchaungayxua3 07-02-2020 17 0   Download

Tomato (Solanum lycopersicum L.) is one of the most important vegetable crops under solanaceous group which can be grown both under open field conditions and greenhouses. Tomato has achieved high popularity especially in the recent years because of lycopene’s anti-oxidative activities and anti-cancerous functions. The cultivated tomato has been used in genetic studies because of the ease with which it can be easily manipulated and also its diversity present within the population.

9p kequaidan2 13-12-2019 15 0   Download

Molecular genetic markers correspond to highly potent source for the study of plant genomes and the association of inherited phenotypic traits with underneath genetic variation. Single Nucleotide Polymorphism (SNPs) are most abundant form of molecular genetic marker which represents a single nucleotide difference between two individuals at a defined location. Compare to others SNPs are direct sequence variation which offers the precise nature of the allelic variants among different genotypes. Further, it signify recurrent type of genetic polymorphism with high density genome coverage.

11p nguaconbaynhay1 04-12-2019 26 0   Download