Suwor, Patcharaporn

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Suwor, Patcharaporn
Alternative Name
Suwor, P.
Suwor, Patcheraporn
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Email
patcharaporn.su@kmitl.ac.th

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    Grafting Compatibility, Scion Growth, and Fusarium Wilt Disease Incidence of Intraspecific Grafted Tomato
    (2022-12-01)
    Saman, Prakob
    ;
    Kawicha, Praphat
    ;
    Sangdee, Aphidech
    ;
    Wongpakdee, Somporn
    ;
    Rattanapolsan, Ladawan
    The tomato (Solanum lycopersicum L.) is one of the most important vegetables grown globally. However, the production of tomatoes is restricted by Fusarium oxysporum f. sp. lycopersici (Fol). This study aims to investigate the ability of Fol-resistant tomato genotypes to be a rootstock for the susceptible cultivar. In this study, a tomato cultivar was grafted on rootstocks of the same species (intraspecific), and grafting compatibility, peroxidase gene expression, and fusarium wilt disease incidence of tomato scion was evaluated. A Fol-susceptible tomato 'Sidathip 3' (SDT3) was grafted onto four different Fol-resistant tomato genotypes and compared with self-grafted cultivar/cultivar and rootstock/rootstock. The survival rate of all grafted plants was 100% at 20 days after grafting (DAG) without significant differences in incompatibility evaluated at 42 days after grafting. The expression of the peroxidase gene (Solyc02g084800.2) using the qPCR technique was compared in self-grafted rootstock LE472/LE472 and SDT3/LE472. The expression level was three times higher in heterografted plants than in self-grafted ones at 15 DAG, indicating graft incompatibility. The rootstocks did not affect the height of the plant, the number of branches, the size of the fruit, or the yield of SDT3 scion. All intraspecific heterografted plants significantly controlled Fol when evaluated 60 days after inoculation. These results showed the usefulness of intraspecific grafting by using the proper rootstock genotypes to increase pathogen resistance in addition to stimulating growth and fruit yield.
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    Antioxidant Potential, Phenolic Content, and Nitrate/Nitrite Content in Various Lettuce Varieties
    (2024-01-01)
    Pumnuan, Jarongsak
    ;
    Kramchote, Somsak
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    Sarapothong, Kritima
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    Doungnapa, Thanaporn
    ;
    Pisutpiboonwong, Nattakarn
    Ten lettuce varieties are analyzed for antioxidant activity, total phenolic, nitrate, and nitrite contents, and the effects of harvest maturity and cold storage in selected varieties are determined. Antioxidant activity and total phenolic content (TPC) are the highest in Red Oak, Red Coral, Red Rapids, and Grand Rapids; intermediate in Green Oak, Green Cos, and Frillice Iceberg; and the lowest in Butterhead, Mini Green Cos, and Head lettuce. Nitrate content is the highest in Red Coral, while the other 9 varieties have comparably lower contents. Nitrite content is inadequate and does not differ with variety. Harvest maturity of 45 days after transplanting (DAT) produced the highest antioxidant activity and TPC, much higher in Red Bowl and Red Butterhead varieties than in Mini Green Cos, Butterhead, Frillice Iceberg, and Green Big Bowl varieties. Storage at 8<sup>o</sup>C for 21 days has no remarkable effects on antioxidant activity, TPC, nitrate, and nitrite contents. Stored Red Bowl lettuce has higher antioxidant activity and TPC than Butter-head and Green Big Bowl varieties. Nitrate content decreases at the end of storage, while nitrite content is below 1 mg/kg FW during the entire storage period, regardless of variety.
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    Effects of different compost manures application on growth of lettuces (Lactuca sativa L.)
    (2020-09-01)
    Suwor, Patcheraporn
    ;
    Jeakkhajorn, S.
    ;
    Kramchote, S.
    The results showed that the difference of livestock manures showed differences in nutrients and amount. The composted chicken manures contained the highest nutrients and showed an optimum C/N ratio, in which the value was less than 1/20. Three lettuces (green oak, fillice iceberg, and green cos) were treated by different compost manures and they were a response to the compost manures in a similar trend. The three lettuce types grew after the application of chicken compost manure had higher on plant height, plant width, leaf length, leaf width, leaf number per plant, SPAD unit, root length, and plant fresh weight as well as chemical fertilizer. On the other hand, the three lettuces grown after the application of cow, goat compost manures, and bio-fermented fertilizer had the lowest of plant growth similar to control (without fertilizer). The results suggested that the chicken manure compost is suitable for lettuce production.
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    Chili (Capsicum annuum L.) genotypes resistant to Pepper yellow leaf curl Thailand virus (PepYLCTHV)
    (2021-01-01)
    Suwor, Patcharaporn
    ;
    Masirayanan, Tawatchai
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    Khingkumpungk, Hathairat
    ;
    Tsai, Wen Shi
    ;
    Saetiew, Kanjana
    Pepper yellow leaf curl Thailand virus (PepYLCTHV) causes leaf curl disease in chili production regions of the tropics and subtropics. Information on PepYLCTHV disease severity and resistance in chili pepper is still limited in Thailand. This study reports PepYLCTHV disease severity through graft inoculation and selection of single resistant plants for use in a chili breeding program. Twenty-one chili genotypes consisting of the local cultivar (5) collected from Thailand, breeding lines (9) developed at Khon Kaen University (KKU), Thailand and improved lines (7) obtained from the World Vegetable Center, Taiwan were used in this study. Forty-five-day-old seedlings of all the genotypes were graft inoculated with PepYLCTHV in a randomized complete block design (RCBD) with three replications and 10 plants per replication and kept in a plastic net house. Disease symptoms were scored at 20, 27, 34, 41 48, and 55 days after graft/inoculation (DAI). Disease severity was visually recorded using 0−5 scores. Results showed that the disease severity of 21 chili genotypes significantly differed at 48 days after grafting. High resistance and stability were shown by 9853-123 genotypes. Two genotypes, PSP11-7 and PSP11-10-1, showed resistant reaction with disease severity scores of 1.9 and 1.8, respectively. However, among 21 chili genotypes or 630 grafted plants, 302 plants were successfully grafted inoculated plants. Therefore, from the results of this work, highly resistant plants (69 single plants) can be selected, selfed and advanced for breeding.
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    Effect of Trichoderma harzianum against Fusarium oxysporum in resistant and susceptible tomato cultivars
    (2025-01-01)
    Suwor, Patcharaporn
    ;
    Mueangkhong, Manthana
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    Kawicha, Praphat
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    Thanyasiriwat, Thanwanit
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    Techawongstien, Suchila
    Fusarium wilt disease presents a substantial challenge to tomato production, especially in an open field environment. The peroxidase (POD) activity and total phenolic compounds (TPCs) play a crucial role in measuring the antioxidant capacity of plants. Understanding the variations in the POD and TPC levels during disease-induced stress becomes important for effectively managing Fusarium wilt and enhancing tomato production. This study investigates the impacts of Trichoderma harzianum inoculation through the root drip method on five tomato cultivars. It compares these cultivars to their non-treated counterparts when they are subjected to infection by Fusarium oxysporum f. sp. lycopersici (Fol). The results showed that the level of resistance to Fol is based on the specific tomato cultivar. Notably, 'MT26' exhibited the lowest disease severity index (DSI), indicating a strong response, whereas 'CLN3682F' showed notable susceptibility. Regarding the POD and TPC activity, its exhibition differed in compatibility with the response of each tomato cultivar to Fusarium wilt disease. The resistant cultivars increased the POD activity after the Trichoderma induction before the Fol inoculation, and this activity was further boosted when exposed to disease conditions. Consequently, enhancing the POD and TPC levels during the initial stages could potentially serve as a systemic defence mechanism of tomatoes against the Fusarium wilt disease.
      2
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    Evaluation of processing tomato resistance to tomato yellow leaf curl virus (TYLCV) and detecting Ty-2 and Ty-3 resistance genes with SCAR-markers
    (2024-09-01)
    Earsakul, S.
    ;
    Pornsopin, N.
    ;
    Techawongstien, S.
    ;
    Lapjit, C.
    ;
    Jeeatid, N.
    Tomato yellow leaf curl virus (TYLCV) is the major yield losing viral disease in both the vegetative and reproductive stages of tomato (Solanum lycopersicum L.) production worldwide. The objective of this study was to evaluate the tomato for resistance to TYLCV and good agronomic traits. In this experiment, yield and yield components of 25 accessions were evaluated in field conditions and compared with one resistant and one susceptible cultivar during the dry season (October 2021-February 2022). The randomized complete block design with three replications and 10 plants of each was designed. The plant was inoculated with TYLCV by whitefly transmission, and the resistance genes (Ty-2 and Ty-3) were examined using two molecular markers. The result showed that three tomato accessions, i.e., KKU-T23157, KKU-T23160, and KKUT23164 were discovered to share the same resistance gene (Ty-2 and Ty-3) as the resistance check cultivar and showed disease responses ranging from resistance (R) to high resistance (HR). Moreover, all three accessions (KKU-T23157, KKU-T23160, and KKU-T23164) showed high yields and yield components, i.e., yield (3.18, 3.74, and 3.38 kg plant<sup>-1</sup>), fruit weight (137.14, 126.71, and 136.91 g fruit<sup>-1</sup>), firmness (5.00, 5.00, and 0.49 N), and the flesh thickness (8.53, 8.62, and 5.96 mm), respectively. This information will offer a supportive direction for tomato breeders to develop TYLCV-resistant cultivars.
      2
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    Genome-wide association study revealed genetic loci for resistance to fusarium wilt in tomato germplasm
    (2023-01-01)
    Kawicha, Praphat
    ;
    Tongyoo, Pumipat
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    Wongpakdee, Somporn
    ;
    Rattanapolsan, Ladawan
    ;
    Duangjit, Janejira
    Tomato Fusarium wilt caused by Fusarium oxysporum f.sp. lycopersici (Fol) constrains tomato production worldwide. Three hundred forty tomato accessions were evaluated for Fusarium wilt resistance and single nucleotide polymorphisms (SNPs) associated with resistance. The disease resistance evaluation revealed that 15, 13, and 15 accessions were identified as Fusarium wilt resistant in Test 1, 2, and Mean data, respectively, with the disease severity index (DSI) ranging from 0-16.7%. A genome-wide association study (GWAS) identified SNPs associated with resistance. Eighteen common SNPs were detected in at least two tests and located on chromosomes 4, 6, 7, 9, and 12. Six unique significant SNPs were found in either Test 1 or 2, located on chromosomes 2, 4, and 7. Candidate genes associated with Fusarium wilt resistance were identi-fied. Notably, two genes encoding leucine-rich repeat-like protein and disease-resistance protein were predicted from the two unique SNPs, solDsnp10606 and solDsnp6266, respectively.
      3
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    Growth and Yield of Watermelon (Citrullus lanatus) in Plastic House in Response to White LED Supplementary Lighting
    (2023-01-01)
    Chamchum, Wasinee
    ;
    Glahan, Somchai
    ;
    Kramchote, Somsak
    ;
    Maniwara, Phonkrit
    ;
    Suwor, Patcharaporn
    Watermelon plants cultivar ‘Kinaree 457’ were grown in plastic house under natural daylight only (control) or with nightly LED supplementary lighting for 6 h (6:00 pm-12:00 pm) or 12 h (6:00 pm-6:00 am) starting from transplanting up to fruit harvest. Plant height, leaf chlorophyll content and fruit yield significantly increased in response to 6 h supplementary LED lighting. Fruit mass, size (length x width) and flesh thickness at 6 h LED treatment were about 2.3 kg, 19.3 ×15.7 cm, and 15.7 cm, respectively, while the fruit of control had 1.7 kg, 16.0 × 14.3 cm, and 13.8 cm, respectively. No significant treatment effect was obtained on peel thickness, flesh color L* and b* values, juice pH and total soluble solids. However, 6 h LED treatment resulted in lower reddening flesh (lower a* values), firmness and higher titratable acidity relative to the control, suggesting the need for improvement in cultural management. Furthermore, multivariate statistics of principal component analysis (PCA) performed on physico-chemical quality revealed the variations among watermelons from lighting and control treatments regardless of lighting hour.
      2
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    Differential Biochemical Responses of Resistant and Susceptible Genotypes of Chili to Pepper Yellow Leaf Curl Thailand Virus
    (2025-09-01)
    Mueangkhong, Manthana
    ;
    Suwor, Patcharaporn
    ;
    Techawongstien, Suchila
    ;
    Teerarak, Montinee
    ;
    Tsai, Wen Shi
    Chili (Capsicum annuum L.) production is threatened by the pepper yellow leaf curl virus (PepLCV), transmitted by whiteflies, leading to reduced yields. This study investigated the biochemical changes in two chili genotypes, PEP6 (tolerant to PepLCV) and Homsuphan (susceptible to PepLCV), following inoculation with the Thailand strain of PepLCV (known as Pepper Yellow Leaf Curl Thailand Virus, PepYLCTHV). Inoculation was performed using whitefly transmission (WF) and graft transmission (GT) methods, and disease severity was evaluated using a standardized index. The level of total phenolic compounds and the activities of peroxidase (POD) and polyphenol oxidase (PPO) enzymes were analyzed in virus-infected plants and compared with those in uninoculated controls. Both chili genotypes exhibited a more rapid increase in disease severity when inoculated with WF than with GT. In PEP6, disease severity was lower than Homsuphan in both WF and GT inoculations. Disease severity in WT-inoculated PEP6 plants increased gradually, reaching 100% by day 36, whereas Homsuphan plants had a more rapid progression, attaining 100% by day 21. The GT method led to slower disease severity progression in both genotypes, reaching 80–85% by day 36. In PEP6 plants, total phenolic compound content increased significantly following WF, indicating an active defense response, whereas levels remained stable in GT plants. Phenolic content in the tolerant genotype Homsuphan remained stable across all conditions. Notably, peroxidase (POD) activity was elevated in GT plants of both genotypes, which correlated with reduced disease severity. Polyphenol oxidase (PPO) activity was lowest in control plants, but WT and GT increased the PPO level. Among the treatments, GT induced the highest PPO activity, which was associated with the lowest disease severity. These findings suggest that GT may enhance disease resistance by modulating phenolic compound accumulation and increasing POD and PPO activity.
      1
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    Evaluation of chili (Capsicum annuum L.) progressive lines for resistance against Colletotrichum capsici and Colletotrichum gloeosporioides
    (2024-09-01)
    Subpang, N.
    ;
    Pornsopin, N.
    ;
    Earsakul, S.
    ;
    Techawongstien, S.
    ;
    Falab, S.
    Anthracnose (Colletotrichum spp.) is a devastating disease that affects the production of chili all over the world. Colletotrichum spp. with strong pathogenicity include C. capsici and C. gloeosporioides, which can infect both immature and mature pepper fruit and cause significant economic losses for the chili industry. The objective of this study was to evaluate the progressive lines of chili for resistance to anthracnose disease. The experiments were carried out by a completely random design (CRD) with three replications and five fruits per replication. In this experiment, 30 progressive lines of chili with different resistant genetic sources (PBC932 and PBC80) and one susceptible cultivar were inoculated with C. capsici and C. gloeosporioides into the two chili fruit stages (green and ripe mature) by microinjection technique. The disease severity was evaluated by lesion diameter seven days after inoculation. Based on their resistance level to two Colletotrichum species at the two fruit stages, the result showed that all progressive lines were classified into eight groups. Five progressive lines, i.e., AT1-1, AT2-3, AT3-1, AT5-2, and AT6-1, were highly resistant (HR) to two Colletotrichum species at both mature fruit stages. Therefore, five progressive lines should be used as high potential lines for improving new varieties with high resistance to anthracnose disease.
      1