Heterosis and inbreeding depression to identify superior F1 hybrids in tomato (Solanum lycopersicum L.) for the yield and its contributing traits

Kumar, Chandan; Singh, S. N.

doi:10.31018/jans.v8i1.788

Cited by 4 publications

(7 citation statements)

References 2 publications

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“…Significant positive heterosis has been reported by Ahmad et al [6], and Sharma et al [20]. These findings of significant positive heterosis over mid and better parent are in line with the findings of Singh et al [5] and Kumar and Singh [25] as well.…”

Section: Fruit Length (Cm)supporting

confidence: 85%

“…Bhatt et al [8,27] observed 2.92 to 54.17% better parent heterosis for yield per plant in tomato, which is very identical to our findings. Similarly, heterobeltiosis in tomato hybrids was also reported in many studies [3,6,14,25,26,29,30]. Therefore, these genotypes may be selected as heterotic hybrids for yield and can further be advanced toward developing a high yielding variety.…”

Section: Fruit Yield Per Plant (Kg)mentioning

confidence: 66%

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Studies on Character Improvement in Tomato (Solanum lycopersicum L.) by Heterosis

Salim

Rashid

Ali

et al. 2019

APRJ

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Most of the tomato varieties in Bangladesh are of inbred type and produced low yield indicating need to develop high yielding variety through the hybridization. Heterosis breeding is used to improve yield and quality of tomato because traditional methods cannot be used to achieve this goal. A half diallel design was employed to develop F1s from seven parents of winter tomato. 21 F1s along with their parents were evaluated for yield and quality traits. Heterosis analysis revealed that heterotic vigor was present for growth and yield characters among hybrids. Heterosis for better parent was negative for days to flowering, days to harvest, harvest duration, number of locules, and number of seeds per fruit but positive for fruit set, number of fruits per plant, yield per plant, pericarp thickness and TSS. None of the hybrid was heterotic for all characters simultaneously. The hybrids G5, G13, G16, G17, G18, and G20 had 25.73, 19.92, 39.20, 36.49, 53.77, and 50.31% higher heterosis compared to the better parent, respectively, for fruit yield per plant as well as for many other yield contributing traits. High heterosis for yield appears to be the consequence of heterosis of yield attributing traits; therefore, these hybrids offer scope of developing improved commercial lines through heterosis breeding.

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Section: Fruit Length (Cm)supporting

confidence: 85%

Section: Fruit Yield Per Plant (Kg)mentioning

confidence: 66%

Studies on Character Improvement in Tomato (Solanum lycopersicum L.) by Heterosis

Salim

Rashid

Ali

et al. 2019

APRJ

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“…Four cross combinations were found superior than the standard check (1350 g) for this trait. Similar estimates for this trait were also reported by Singh and Sastry, (2011) and Kumar and Singh (2016). Plant height is one of the most important factors that determines the harvest duration of the indeterminate tomatoes.…”

Section: Resultssupporting

confidence: 86%

Performance of Tomato (Solanum lycopersicum L.) Hybrids for Yield and its Contributing Traits under Mid-hill Conditions of Himachal Pradesh

Raj¹,

Forestry²,

Bhardwaj³

et al. 2018

IJBSM

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With an objective to estimate the performance of tomato hybrids with respect to their yield and yield contributing traits, an experiment was conducted at the experimental farm of RHR&TS, Jachh, Kangra, Himachal Pradesh with 20 hybrids along with their 12 diverse parents and standard check Naveen 2000+, which is a leading commercial tomato hybrid in Himachal Pradesh. The hybrids were produced during Rabi 2015 by following line×tester mating design and were evaluated during kharif, 2016. The later experiment was designed in Randomized Complete Block Design (RCBD) with three replications. The obtained results revealed that the hybrid, EC-620410×Solan Lalima was earliest among all the entries in terms of days to 50% flowering, while both the hybrids between EC-8910155 and FT-5 were earliest in terms of days taken to marketable maturity. The hybrid between BT-1-1×FT-5 had maximum number of fruits cluster 1 as well as maximum yield plant 1 . For average fruit weight, the hybrids of BT-1-1×Solan Lalima were found best among all the hybrids and their parents. The hybrid, LE-79-5×FT-5 produced maximum number of marketable fruits plant 1 . Moreover this hybrid recorded minimum severity of Alternaria blight (early blight). Hence, for commercial exploitation of heterosis for earliness and yield in tomato, these hybrids are needed to be tested in multiple locations for stability before releasing as varieties. AbstractArticle History

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“…HASSAN et al average fruit weight (Stommel, 2001;Rodríguez et al, 2010) and TSS (Rodríguez et al, 2010). Also, Bhnan (2002) and Kumar & Singh (2016) reported that the inbreeding depression (ID) in some produced hybrids was not significant for yield and fruit quality. However, this approach has not been discussed in earlier studies.…”

Section: Introductionmentioning

confidence: 99%

Potential Adoption of the F2 Generation of Some TYLCV-Resistant Tomato Hybrids in Commercial Production under Natural Field Infection

et al. 2021

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T HE ECONOMIC feasibility of using the tomato yellow leaf curl virus (TYLCV) resistant F 1 tomato hybrids (Solanum lycopersicum L.) may be improved by using their F 2 generation in commercial production. Hence, this study was performed to evaluate the F 1 and F 2 generations of 15 TYLCV-resistant/tolerant commercial tomato hybrids during the 2018 and 2019 fall seasons to identify the best hybrids and F 2 populations for commercial production. Both F 1 and F 2 populations were evaluated separately for TYLCV-resistance, yield, and fruit quality traits. Broad sense heritability (H 2 b ) values of TYLCV-resistance were high, being > 60% in hybrids 186, Goldstone, Rabha, SV0922, and SV8320 in both seasons. F 1 and F 2 populations of '186', 'Dania', 'PS550', 'Rozalina', 'SV0922', 'SV8320', and 'Tyrmes' had the highest total yield (TY)/plant, low TYLCV disease (TYLCVD) mean scores, acceptable fruit quality traits, and average fruit weight > 80 g. Desirable inbreeding depression (ID) values were observed for TYLCVD-mean score in F 2 populations of most evaluated hybrids; for TY/plant in F 2 populations of 'SV3773' in both seasons, and in populations of '186', '448', 'Goldstone', 'Rabha', 'SV8320' and 'SV0922' in the second season. Most hybrids had desirable significant ID values for fruit quality traits. Accordingly, it is concluded that the F 2 populations of hybrids 186, SV0922, and SV8320 may be used in commercial tomato production under TYLCVinfection in the fall season.

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Heterosis and inbreeding depression to identify superior F1 hybrids in tomato (Solanum lycopersicum L.) for the yield and its contributing traits

Cited by 4 publications

References 2 publications

Studies on Character Improvement in Tomato (Solanum lycopersicum L.) by Heterosis

Studies on Character Improvement in Tomato (Solanum lycopersicum L.) by Heterosis

Performance of Tomato (Solanum lycopersicum L.) Hybrids for Yield and its Contributing Traits under Mid-hill Conditions of Himachal Pradesh

Potential Adoption of the F2 Generation of Some TYLCV-Resistant Tomato Hybrids in Commercial Production under Natural Field Infection

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