Transgenic Tomatoes for Abiotic Stress Tolerance and Fruit Traits: A Review of Progress and a Preview of Potential

Kumari, P. Hima; Kumar, Sanjeev; Rajasheker, G.; Madhavi, D. L.; Naravula, Jalaja; Shridhar, K. Kavya; Scinthia, K. P.; Divya, D.; Sri, M. Swathi; Akhila, Ch.; Sujatha, E.; Rathnagiri, P.; Kishor, P. B. Kavi

doi:10.1007/978-981-15-5932-7_1

Cited by 2 publications

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“…In addition, many female and male parents can be used in the crossing plan, although the main drawback of this design is that it cannot provide any information about epitasis effects. To analyze the genetic behavior (additive and non-additive) of the desired traits in tomatoes, NCM II was used [ 39 ]. The inheritance model of tomato yield attributes is complicated and involves polygenic interactions [ 40 ].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, hybrid development may be effective for metals tolerance using males and females in the next generations, and progeny testing may be necessary for hybrid development [ 47 ]. Metal tolerance was controlled by dominant gene action, indicating that hybrid production is the best way to use the existing variability for this trait [ 39 ]. Higher values of female than male additive variance indicate that improving metals tolerance selection for females will be effective in subsequent generations because the additive portion can be fixed through selection.…”

Section: Discussionmentioning

confidence: 99%

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Genetic Behavior of Tomato (Solanum lycopersicum L.) Germplasm Governing Heavy Metal Tolerance and Yield Traits under Wastewater Irrigation

Raja

Farhat

Tariq

et al. 2022

Plants

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Wastewater irrigation is a substitute for surface water scarcity, but traces of heavy metals (HMs) result in deleterious implications for soil, crop productivity, and in humans. Crops presenting HMs tolerance in genetic behavior are important for producing tolerant genotypes cultivated under wastewater irrigation. In the first part of this experiment, the results obtained previously are re-assessed in a hydroponic system and similar patterns and concentrations of HMs are found in different tomato organs. Following this trial, the tomato’s (Solanum lycopersicum L.) genetic basis of traits conferring HMs tolerance and yield are assessed when irrigated with waste or canal water. The North Carolina Mating II analysis illustrate the amount of gene action, nature, and inheritance pattern. Genetic components depict the involvement of non-additive, additive, and maternal genetic effects in HMs tolerance inheritance and yield. A noticeable increase in cumulative additive variance for the number of flowers (11,907.2) and the number of fruits (10,557.9) is recorded for tomato plants irrigated with wastewater, illustrating additive gene action. However, female and male (MSf/MSm) square ratios also show an association with cytoplasmic inheritance. For HMs tolerance, both additive and dominant variances appeared to be significant; cumulative dominance variance (4.83, 16.1, 4.69, 76.95, and 249.37) is higher compared to additive variance (0.18, 2.36, 0.19, −0.27, and 14.14) for nickel (Ni), chromium (Cr), lead (Pb), manganese (Mn), and zinc (Zn), respectively, indicating dominance gene action. The genotype RIOGRANDI accumulated and translocated fewer HMs to the aerial part of the plant compared to CLN-2418A and PB-017906, thus presenting a tolerant tomato genotype according to the hydroponic experiment. This also exhibited a differential pattern of gene action for HMs tolerance, suggesting that genotypes possess significant differences for HMs tolerance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%