Comparison of qualitative and quantitative traits of some Advanced breeding lines of tomato (Lycopersicon esculentum L.)

Abstract

Field trials and laboratory experiments were conducted on six advanced breeding lines of tomato (Lycopersicon esculentum L.) between 2004 and 2006 to genetically assess the organoleptic properties of the tomato lines, determine the relationships among tomato traits using correlation analysis and to estimate the fruit yield potential of the tomato lines. The trial was laid out in randomized complete block design with three replicates. Planting was done on four-row plots of 8 x 5 m using intra row spacing of 60 x 50 cm to obtain a plant population of 33,333 per ha. The results show that agronomic traits such as plant height, fruit weight and fruit yield differed significantly from one line to another, while significant differences exist in their organoleptic properties such as percentage titratable acid, organic acids, sugars and dry matter contents. Fruit yield ranged from 11.0 Mg/ha (CLN 1462B) to 30.0 Mg/ha (Manuella). The highest correlation coefficient (r=0.99) was found in the relationship between fruit weight and fruit yield. Titratable acids was highly and positively correlated with dry matter content, citric acid and malic acid, while malic acid among others was negatively and significantly correlated with fructose, glucose and pH.

Phenotypic characterization of exotic tomato germplasm: An excellent breeding resource

“…Genotypes Dwarf Moneymaker, Jaguar F1 and the Rio Grande, are determinate in their growth nature, and they showed lower plant height and leaf area compared with indeterminate exotic genotypes. Variability among genotypes for the leaf area, SPAD value and plant height suggests genetic diversity [22,24] coupled with higher heritability may lead to high genetic gains in the breeding program.…”

Evaluation of Tomato (Solanum lycopersicum L.) Genotypes for Qualitative and Quantitative Characteristics

“…Whereas the lowest plant height 48.10 cm in the genotype RHRT-15-6. The results obtained are in close agreement with the observations recorded by Ahmed et al, (2010), Olakojo and Adetula (2014), Jamdhade (2016), Jatav et al, (2017), Samad et al, (2017) and Nalla and Rana (2021) for average plant height. The genotypes RHRT-15-4, RHRT-15-17, RHRT-15-19, RHRT-15-20, RHRT-15-21, RHRT-17-1, RHRT-17-2 and RHRT-17-5 were observed indeterminate type of plant growth habit andrest of all thegenotypes along with two standard checks were recorded determinate in growth habit.…”

“…The lowest yield 20.29 t ha -1 was given by the genotype RHRT-17-9. Similar trends of results for yield hectare -1 were reported by Kalloo and Banerjee (2000), Vijaya et al, (2003), Alam et al (2005), Dar et al, (2012), Olakojo and Adetula (2014), Kumara et al, (2017), Vijeth et al, (2018) and Mandali and Vijayalakshmi (2020). Hence there is a great possibility of improvement in attributes of this vegetable crop.…”

“…The average fruit weight of the genotypes ranged between 31.80 to 78.20 g. The genotype Punjab chhuhara recorded the highest average fruit weight (78.20 g) followed by RHRT-17-2 recorded the 74.20 g . The genotype RHRT-15-23 recorded the lowest fruit weight 31.80 g. The fruit weights recorded by rest of the genotypes were in between 31.80 to 78.20 g. The results are in close agreement with Bharadwaj and Thakur (1994), Alam et al, (2005), Olakojo and Adetula (2014), Islam et al, (2014), Ghasemi et al, (2015), Meena et al, (2015), Kumara et al, (2017), Nadia et al, (2017) and Vijeth et al, (2018). The lowest polar diameter was found in the genotype RHRT-15-24 (3.5 cm) and highest polar diameter was recorded in the genotype RHRT-15-3 (6.91cm) followed by RHRT-17-9, RHRT-17-4 and RHRT-15-14, which was recorded 6.15 cm, 6.14 cm and 6.0 cm, respectively.…”

Characterization of Exotic Tomato Germplasm from ICAR-NBPGR Gene Bank

“…The variation in genotypes for the characters under study may be due to genetic diversity and differences in adaptability (Hassan et al, 2021). Variability and genetic diversity among the genotypes and higher heritability offer higher genetic gains in breeding programmes (Olakojo and Adetula 2014;Bhattarai et al, 2016).…”