Selection of shade-tolerant tomato genotypes

Assessment of genetic diversity was made for sixteen yields and yield contributing traits in twenty-one tomato genotypes using D2 statistics. These genotypes were grouped into five clusters by the use of the Tocher method. Cluster I was the most significant, comprising 13 genotypes (Pusa Ruby, CLN2123A1 Red, PKM-1, IIHR-2042, Marglobe, EC 163605, Hawaii 7998, Palam Pink, EC 521038, Punjab Rakthak, EC 163383, Arka Abha and IIVR BT-10) followed by Cluster II with 5 genotypes (EC 163611, Punjab Sartaj, EC 160885, Punjab Barkha Bahar and Roma). Other Clusters (II, IV and V) were solitary ones (EC 249515, Kashi Chayan, DVRT-2). Cluster II recorded a maximum intra cluster distance of 3521.73 followed by cluster I (2796.45), whereas, cluster II, IV and V had zero intra cluster distance. The inter cluster D2 value also ranged widely, with a minimum value of 4082.34 between cluster I and IV, indicating a close relationship among the genotypes included. The maximum inter cluster D2 value (23102.20) between cluster II and V indicates high diversity among the genotypes in the clusters. Hence, maximum contribution towards divergence was observed by average fruit weight (14%) followed by fruit set percentage (12%), number of flowers per cluster (8%), fruit yield per plant (7%), number of fruits per truss (6 %) and total soluble solid content (6 %). Hence, due importance could be given to the selection of genotypes for further improvement based on these traits.

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Selection of processing tomato genotypes with high acyl sugar content that are resistant to the tomato pinworm

Genetics and Molecular Research ◽

10.4238/2013.february.8.2 ◽

2013 ◽

Vol 12 (1) ◽

pp. 381-389 ◽

Cited By ~ 15

Author(s):

D.M. Dias ◽

J.T.V. Resende ◽

M.V. Faria ◽

L.K.P. Camargo ◽

R.R. Chagas ◽

...

Keyword(s):

Sugar Content ◽

Processing Tomato ◽

Tomato Pinworm ◽

Tomato Genotypes ◽

Selection Of

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Indirect selection of industrial tomato genotypes rich in zingiberene and resistant to Tuta absoluta Meyrick

Genetics and Molecular Research ◽

10.4238/2015.november.24.16 ◽

2015 ◽

Vol 14 (4) ◽

pp. 15081-15089 ◽

Cited By ~ 9

Author(s):

I.P. Lima ◽

J.T.V. Resende ◽

J.R.F. Oliveira ◽

M.V. Faria ◽

N.C.V. Resende ◽

...

Keyword(s):

Indirect Selection ◽

Tuta Absoluta ◽

Tomato Genotypes ◽

Selection Of

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Оценка реакции мужского гаметофита томата на действие патогенов Alternaria Spp.

10.53040/9789975347204.84 ◽

2020 ◽

Author(s):

Татьяна Салтанович ◽

◽

Людмила Анточ ◽

А. Дончилэ ◽

◽

...

Keyword(s):

Statistical Analysis ◽

Male Gametophyte ◽

Selection Process ◽

Breeding Techniques ◽

Tomato Genotypes ◽

Selection Of

Research objective: to identify tomato genotypes resistant to Alternaria on variability and symptoms of male gametophyte on selective backgrounds with cultural filtrate of pathogens Alternaria spp. A set of gamete breeding techniques and genetic-statistical analysis were used in the experiments. Some patterns of the variability and heritability of traits in the tomato male gametophyte have been identified on media with filtrates of pathogens. The differences in the resistance of pollen to the filtrate influence were established; the differentiation and selection of genotypes for further breeding were made. These studies can be used at different stages of the selection process.

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IDENTIFICATION AND SELECTION OF PROCESSING TOMATO GENOTYPES RESISTANT TO TOSPOVIRUS

Acta Horticulturae ◽

10.17660/actahortic.1999.487.50 ◽

1999 ◽

pp. 323-328

Author(s):

L.V. Resende ◽

E. Ferraz ◽

J.G.E.de França ◽

H.A. Quilombo ◽

A.A.S. da Silva

Keyword(s):

Processing Tomato ◽

Tomato Genotypes ◽

Selection Of

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Tomato Genotype Modulates Selection and Responses to Root Microbiota

Phytobiomes Journal ◽

10.1094/pbiomes-02-20-0020-r ◽

2020 ◽

Vol 4 (4) ◽

pp. 314-326

Author(s):

Elizabeth French ◽

Tri Tran ◽

Anjali S. Iyer-Pascuzzi

Keyword(s):

Recombinant Inbred Lines ◽

Crop Improvement ◽

Amplicon Sequencing ◽

Growth Enhancement ◽

Crop Species ◽

Tomato Root ◽

Tomato Genotype ◽

Root Microbiota ◽

Tomato Genotypes ◽

Selection Of

Using microbial inoculants to enhance plant health is promising for crop improvement. However, for success, knowledge of how different cultivars within a crop species select and respond to the root microbiome is critical. The aims of this study were to (i) determine the contribution of tomato genotype to the tomato root bacterial microbiome and (ii) investigate whether closely related tomato genotypes differ in their selection of and response to root endophytes. We used 16S ribosomal RNA amplicon sequencing to examine the root bacterial communities of six Solanum lycopersicum (domesticated tomato) and two S. pimpinellifolium (wild tomato) accessions. We found that, across accessions, both the root endosphere and rhizosphere were affected by genotype. Genotype accounted for 10% of the variation in root microbiota. Two bacterial families, Bacillaceae and Rhizobiaceae, were significantly enriched in the root endosphere in at least six of the eight tomato genotypes. To investigate whether closely related tomato genotypes differed in selection of these endosphere-enriched taxa, we profiled the root endosphere of 20 recombinant inbred lines (RILs) derived from two of the genotypes. The abundance of Bacillaceae and Rhizobiaceae isolates varied quantitatively in the root endosphere of the RILs. Inoculation of 16 RILs with a Bacillaceae isolate identified from the root endosphere of field-grown tomato showed that RIL responses, in terms of shoot and root growth, varied from less than 5% growth enhancement to more than 40%. Our data show that tomato genotypes have distinct but overlapping root bacterial microbiomes and respond differently to specific bacterial endophytes.

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Selection of tomato genotypes for drought tolerance and agronomic potential through different selection indexes

Horticultura Brasileira ◽

10.1590/s0102-0536-20210115 ◽

2021 ◽

Vol 39 (1) ◽

pp. 102-111

Author(s):

Camila S de Oliveira ◽

Gabriel M Maciel ◽

Eusímio F Fraga Júnior ◽

Joicy Vitória M Peixoto ◽

Vitor B Assunção ◽

...

Keyword(s):

Drought Tolerance ◽

Water Deficit ◽

Block Design ◽

Selection Index ◽

Control Treatment ◽

Solanum Pennellii ◽

Agronomic Potential ◽

Selection Indexes ◽

Tomato Genotypes ◽

Selection Of

ABSTRACT The selection of genotypes with agronomic potential associated with drought tolerance is considered of high complexity. An alternative could be the use of selection indexes that can evaluate multiple characteristics simultaneously. This study aimed to select tomato genotypes with agronomic potential and drought tolerance by selection indexes. The experiment was conducted in a randomized block design with three replications. Ten treatments were evaluated: seven genotypes F2RC3, donor genitor (Solanum pennellii), recurrent genitor (UFU-040), and cv. Santa Clara. The irrigation was suspended until the substrate reached a matric potential of ≤-25 kPa for water stress simulation during the tomato cycle at 45, 60, 80 and 100 days after sowing. The control treatment (donor genitor) and cv. Santa Clara, were resistant and susceptible to water deficit, respectively. The UFU-102-RC3#91335 genotype presented agronomic potential and satisfactory tolerance level to water deficit and presented 58.2% higher production than the recurrent genitor (UFU-040). The genotype-ideotype distance selection index was the most appropriate for the selection of tomato genotypes for agronomic potential allied to drought tolerance.

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