@article{ชมเดช_สินบุญยะมะ_พงษ์พยัคเลิศ_เจือจุน_2022, place={Pathumthani, Thailand}, title={การทดสอบความต้านทานของยีนหลัก Ty-2 บนโครโมโซม 11 ในมะเขือเทศผสมกลับรุ่น BC6F2 ระหว่างสายพันธุ์ป่า Solanum habrochaites accession ‘L06112’ clone No.1 กับสีดาทิพย์3 ต่อเชื้อไวรัสใบหงิกเหลืองมะเขือเทศใน 3 สถานที่ }, volume={10}, url={https://li01.tci-thaijo.org/index.php/tjst/article/view/251235}, DOI={10.14456/tjst.2021.34}, abstractNote={<p>Tomato yellow leaf curl disease is one of the diseases that cause damage to commercial tomato cultivars in every region of Thailand. The Seedathip3 tomato cultivar was used for introgression of TYLCV resistance genes from a wild species, <em>Solanum habrochaites </em>L06112 accession. Tomato seedlings from the BC<sub>6</sub>F<sub>2</sub> generation were verified by 3 positions of DNA markers for containing a major resistance gene on chromosome 11. The BC<sub>6</sub>F<sub>2</sub> generations were tested for TVLCV resistance at 3 locations with different viral isolations. The locations included; TYLCTHV-[NP] at TVRC Kasetsart University, Nakhon Pathom province, TYLCTHV-[CM] at East West Seed Company Suphanburi province, and TYLCTHV-[NK] at Syngenta Company Khon Kaen province. Different inoculation methods were used at each of the three locations. Symptom observations were recorded every week for 7 weeks. The viral concentrations were checked at 7 weeks post-inoculation.  The resistance line, <em>S.</em> <em>habrochaites </em>showed complete resistance at 3 locations with the highest disease score at 0.3 and ELISA readings with presence lower than the cut-off value, while Seedathip3  showed susceptibility at all 3 locations with disease scoring of 2.48-3.06. The F<sub>1</sub> generation of Seedathip3 and <em>S.</em> <em>habrochaites</em> showed disease scores in the range of 0.73-1.5. The BC<sub>6</sub>F<sub>2 </sub> results showed susceptibility with disease scores higher than F<sub>1</sub> generation at all locations. This is the result of only the <em>Ty-2</em> selection on chromosome 11. <em>S. habrochaites</em> have another gene that affects the mechanism of TYLCV resistance. The commercial tomato cultivars require resistant gene combinations to improve the level of TYLCTHV resistance.</p>}, number={4}, journal={Thai Journal of Science and Technology}, author={ชมเดช อรอุบล and สินบุญยะมะ อิสระยศ and พงษ์พยัคเลิศ อุไรวรรณ and เจือจุน นริศา}, year={2022}, month={Apr.}, pages={427–437} }