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Characterization and screening for leaf curl disease resistance in natural variants of tomato (Solanum lycopersicum) genotypes

Indian Agricultural Research Journals

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Title Characterization and screening for leaf curl disease resistance in natural variants of tomato (Solanum lycopersicum) genotypes
 
Creator CHANDRASHEKAR, K
SAHA, SWATI
VERMA, ABHISHEK
TRIPATHI, SAVARNI
BASAVARAJ, Y B
KHAR, ANIL
 
Subject Fruit weight, Low seed, Markers, Natural variants, ToLCV, Yield
 
Description The experiment was conducted during winter (rabi) seasons of 2022 and 2023 at ICAR-Indian Agricultural Research Institute, Pune, Maharashtra to evaluate the natural variants of tomato (Solanum lycopersicum L.), PTS-8, PTS-25 and PTS-29, isolated from Pusa Gaurav and EC538421. The identified line evaluated along with parental lines (Pusa Gaurav and EC-538421); PTS-24; Pusa Rohini and Arka Rakshak for morphological characterization and tomato leaf curl virus (ToLCV) incidence. Plant height ranged from 41.35–144.33 cm and early flowering (30–33 days) was observed in lines, PTS-24, PTS-25, and PTS-29. Large sized fruits (72–76 g) were recorded in PTS-8 and PTS-25, while highest yield (138.65 t/ha) was recorded in PTS-25. PTS-24 and PTS-25 recorded low seed content of 0.28 g and 0.37 g/100 g fresh fruit, respectively which is desirable for utility in processing industry and for raw consumption. Highest vitamin C content (38.87 mg/100 g FW) was observed in PTS-24. Incidence of ToLCV was lowest in PTS-8 (5.33%), followed by EC538421 (6.25%), PTS -29 (6.61%) and Arka Rakshak (6.93%). Pusa Rohini was most susceptible line (48.42%). All the lines were screened for leaf curl, CMV and aphid/nematode resistance/ tolerance markers with 12 different primers. Line EC538421, its variants PTS-8, PTS-29 and Arka Rakshak showed amplification of resistant fragment (900 bp, T0302 primer) for ToLCV resistant marker Ty-2. All the lines were tested negative for other resistance markers. Principal component analysis revealed that traits such as number of fruits/plant, yield, disease intensity, seeds/fruit etc. were some of the principal discriminatory characteristics. These identified lines can be utilized in breeding programmes to develop improved tomato cultivars.
 
Publisher Indian Council of Agricultural Research
 
Date 2024-09-11
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJAgS/article/view/150837
10.56093/ijas.v94i9.150837
 
Source The Indian Journal of Agricultural Sciences; Vol. 94 No. 9 (2024); 952–958
2394-3319
0019-5022
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJAgS/article/view/150837/55797
https://epubs.icar.org.in/index.php/IJAgS/article/view/150837/55798
 
Rights Copyright (c) 2024 The Indian Journal of Agricultural Sciences
https://creativecommons.org/licenses/by-nc-sa/4.0