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Please use this identifier to cite or link to this item: http://anchan.lib.ku.ac.th/agnet/handle/001/3115

ARN: TH201200003038
Authors: Acharaporn Na Lampang Noenplab
อัจฉราพร ณ ลำปาง เนินพลับ
Authors' affiliation: Rice Department, Bangkok (Thailand). Bureau of Rice Research and Development. Phitsanulok Rice Research Center
Authors' affiliation (Thai): กรมการข้าว สำนักวิจัยและพัฒนาข้าว ศูนย์วิจัยข้าวพิษณุโลก
Title: การลดความรุนแรงของโรคไหม้ของข้าวโดยการปลูกแบบหลายสายพันธุ์ในภาคเหนือตอนล่าง
Minimization of rice blast severity by means of multilines in the lower north
Corporate authors (Thai): Rice Department, Bangkok (Thailand). Bureau of Rice Research and Development
Citation: [Proceeding of 2nd rice annual conference year 2011: Rice and national farmers' day], Bangkok (Thailand), p. 267-281
Format Extent: 375 p.
Issue Date: 2011-06
Language: tha
Keywords: Rice blast
ฺBlast resistance
Subject Classification(ASC): H20
AGROVOC: Oryza sativa
Oryza sativa
Developmental stages
Disease resistance
Abstract: This study was carried out at Phitsanulok Rice Research Center during 2008-2010 aiming for minimizing rice blast severity by growing 2 rice lines differed in blast resistance to broaden rice genetics. In 2008, resistance screening was performed on 2 sets of blast resistant rice lines derived from KDML105 having different donors of resistance developed by Ubon Ratchathani Rice Research Center. Ten selected blast isolates were inoculated one at a time onto 21 day-old seedlings at 50,000 spores/ml and kept at 25 oC in the controlled room for 7 days before assessment. Since selection criteria were based on resistance to half of the tested isolates and an ideal pair should have similar maturity, therefore, none of the lines have been selected. In 2009, the third set consisted of 15 improved resistant rice lines derived from KDML105 having Jao Hawm Nin and DHL-279 as resistance donors, was tested in the controlled room using the same procedures as in 2008. Three lines designated UBN03005-6-3-26-10-49-10, UBN03004-3-16-20-20-40-14 and UBN03004-3-16-20-11-100-4 were chosen and tested further in the greenhouse for comparison between pair and single line growing having KDML105 and RD15 as susceptible checks. The experimental design was CRD having 7 treatments with 4 replicates. Seeds of pair treatments were mixed and pre-germinated at 1:1 w/w before transplanting at 2 plants/hill. Single line treatments were also used 2 plants/hill. Blast inoculation was performed at tillering and flowering stages. Overall, negligible symptom was observed at tillering while 0-5.6% neck blast severity was recorded at harvest. The best treatment was growing UBN03005-6-3-26-10-49-10 together with UBN03004-3-16-20-11-100-4 since it showed neither leaf nor neck blast compared to 5.6 and 1.7% neck blast severity in KDML105 and RD15, respectively. Repeated experiment was carried out in 2010 and results had shown the same trend as in 2009 when growing UBN03005-6-3-26-10-49-10 together with UBN03004-3-16-20-11-100-4 had the lowest neck blast severity being 6.5% compared to 18.4% and 13.8% recorded in KDML105 and RD15. Results have shown a great potential for minimization of rice blast severity through the mixed growing of 2 sister lines having similar agronomic characters but different resistance to rice blast.
Right: ลิขสิทธิ์เป็นของเจ้าของบทความแต่เพียงผู้เดียว
สงวนลิขสิทธิ์ตามพระราชบัญญัติลิขสิทธิ์ พ.ศ. 2537
เอกสารนี้สงวนไว้สำหรับการใช้งานเพื่อการศึกษาเท่านั้น ไม่อนุญาตให้นำไปใช้ประโยชน์ด้านการค้า ไม่ว่ากรณีใดๆ ทั้งสิ้น อีกทั้งห้ามมิให้ดัดแปลงเนื้อหา และต้องอ้างอิงถึงเจ้าของเอกสารทุกครั้งที่มีการนำไปใช้
Type: Collection
Format Extent: 375 หน้า
Availability : Library of Bureau of Rice Research and Development, Rice Department;
Availability: ห้องสมุดสำนักวิจัยและพัฒนาข้าว กรมการข้าว;
Appears in Collections:Rice Department

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