Genetic Expression of Tomato for Heat and Drought Stress Tolerance: An Overview

Solankey, S. S.; Singh, R. V.; Baranwal, D. K.; Singh, D. K.

doi:10.1080/19315260.2014.902414

Cited by 46 publications

(31 citation statements)

References 68 publications

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“…One of the main problems in introducing high-yielding tomato varieties adapted in highlands for the lowlands is the presence of high-temperature stress which causes negative effects on the growth, reproduction, yield components, and disease resistance (Solankey et al 2015). The optimal temperature for tomatoes is 20-30°C during the day and around 20°C at night (Camejo et al 2005).…”

Section: Temperature Stress Evaluationmentioning

confidence: 99%

Epistatic gene control on the yield of tomato at medium elevation in the tropical agroecosystem

2019

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Abstract. Mawasid FP, Syukur M, Trikoesoemaningtyas. 2019. Epistatic gene control on the yield of tomato at medium elevation in the tropical agroecosystem. Biodiversitas 20: 1880-1886. Cultivation of tomatoes on the middle-low plain generally decreases the quantity and quality of the yield due to high-temperature stress. Increasing the size and weight of lowland tomatoes is needed to enhance national production. Information on the action and genetic model of target characters is needed in the preparation of the assembly program, especially for selection needs. This study aims to obtain genetic information and heritability of tomato yield characters, as a basis for assembling large tomato varieties for the lowlands. The study was conducted using six populations (P1, P2, F1, BCP1, BCP2, and F2) resulting from two different crosses of 99D x Tora (C-I) and 97D x Tora (C-II). The results show that the action of non-additive genes and non-allelic interactions has a large value, with duplicate epistasis being more dominant than complementary epistasis. Duplicate epistasis was found in the character of harvest time, fruit length, fruit diameter, fruit weight in cross I and flowering time, harvest time, fruit length, fruit diameter, and number of fruits in cross II, while complementary epistasis was found in flowering time, fruit weight per plant, number of fruits in cross I, and fruit weight, fruit weight per plant in cross II. Moderate to high heritability was found in the character of fruit length, fruit diameter, fruit weight, and fruit weight per plant. The values are higher in population from the cross I (99D x Tora) for each character, indicating that the cross I has a higher potential for genetic progress than cross II. Selection is recommended when the homozygosity has increased, using the Bulk method or Single Seed Decent. The two methods above can maintain variability in the next generation, so epistasis genes that control target characters are not drastically eliminated.

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Section: Temperature Stress Evaluationmentioning

confidence: 99%

Epistatic gene control on the yield of tomato at medium elevation in the tropical agroecosystem

2019

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“…Drought stress is one of the determining factors for plant growth and is one of the major environmental constraints affecting photosynthetic efficiency and limiting the yield of crop plants. In recent years, many studies have focused mostly on the demand for gene sources of drought tolerance [1], [2]. Secondly, it is also important to achieve a minimizing/sustainable use of water supply with maintaining a relatively constant yield and quality [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Effect AF Reduced Irrigation on Flowering, Fruit Set and Yield of Indeterminate Tomato

2019

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Drought stress has become an important limiting factor for tomato growth and yield. To evaluate the effect of water stress on the productivity nine tomato genotypes were grown in a field at the Maritsa Vegetable Crops Research Institute under two watering regimes - optimum and 50% reduced. Flower number, fruit number, fruit weight and flower abortion rate were measured. The studied tomato genotypes showed different behavior in response to drought stress. A decrease of flower number, fruit number and fruit weight from 2nd to 5th trusses was observed in scarcity. Water stress reduced the flower number by 25% and fruit number by 58% compared to the control plants. The highest reduction of the fruit weight of 76.1% and 78.3% respectively was registered in the 4th and 5th trusses.

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“…There has been much research aiming to development of tolerant tomato varieties but the process is slow and difficult due to the complex and multigenic control of drought tolerance [11], [12]. The approaches to breeding drought-resistant included: 1. screening of available germplasm for drought tolerant/adapted varieties; 2. hybridization with wide species distinguished by enhance drought tolerance; 3. genetic transformation [13], [14]. In order to achieve the develop of genotypes with enhanced tolerance to water stress it is essential to combine the knowledge required to agronomical, physiological, biochemical and genetic basis of water tolerance.…”

Section: Introductionmentioning

confidence: 99%

Screening of Tomato Genotypes for Tolerance of Reduced Irrigation

2019

PSENR-19, LCABES-19, L2hss-19 &Amp; ABLE-19 June 19-21, 2019 Lisbon (Portugal)

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Screening and selection of tomato accessions under conditions of 50% reduced irrigation was performed in the current study. The experiment was conducted at the Maritsa Vegetable Crops Research Institute with 10 determinate tomato accessions (five largefruited and five for processing) in two consecutive years (2016-2017). The productivity per plant, number and average fruit weight was recorded for two harvest periodsin the end of July and mid of August. The data indicated that reduced irrigation during growing season influenced more strong productivity per plant especially in the second harvest period. The decrease of the yield in two studied tomato groups was 59.3% and 54.2% respectively. In the first harvest period the reduction of yield was 46.3% and 27.2%. Moreover the applied stress had the weaker negative effect on average fruit weight. In both studied tomato groups, the reduction of fruit weight below 30% was observed. The studied large-fruited tomato accessions showed low drought tolerance compared to the tomato accessions for processing. Three-way analysis of variance showed that watering regime influenced mainly the productivity per plant and fruit set while the average fruit was affected by genotype. Based on the present study tomato accessions BG 985 and BG Solaris suitable for breeding of drought stress were selected.

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Genetic Expression of Tomato for Heat and Drought Stress Tolerance: An Overview

Cited by 46 publications

References 68 publications

Epistatic gene control on the yield of tomato at medium elevation in the tropical agroecosystem

Epistatic gene control on the yield of tomato at medium elevation in the tropical agroecosystem

Effect AF Reduced Irrigation on Flowering, Fruit Set and Yield of Indeterminate Tomato

Screening of Tomato Genotypes for Tolerance of Reduced Irrigation

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