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| Registros recuperados: 41 | |
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| Pachara Saengsawong; Supaporn Junbuathong; Piyavadee Charoenwattana. |
| In three-line hybrid rice system, development of parental lines by backcrossing and early generation testing for combining ability is a method used for developing CMS lines (A line) and restorer lines (R line) simultaneously. In this study F3 progenies from 15 crosses of maintainers (B line) were backcrossed to their respective A lines, and 6 crosses and 46 isogenic lines produced. Completely sterile backcross progenies were found in 3 crosses, i.e., IR79156A//IR79156B/CNT1, IR80156A//IR80156B/IR46R and IR80156A//IR80156B/SPR1. Concurrently three new CMS lines, PTT08001A, PTT08002A and PTT08003A were developed. They were then crossed with 5 testers or restorer lines, i.e., RD31, SPR1, CK81, CK120 and CK168. The resulting 15 crosses of F1 hybrid were... |
| Tipo: PhysicalObject |
Palavras-chave: Cytoplasmic male sterile; CMS system; Hybrid rice; A-line; B-line; R-line; Restorer lines; Back crossing; Parental lines; Variety development; Yield trial; ข้าวลูกผสม; ข้าว 3 สายพันธุ์; การผสมกลับ; สายพันธุ์เรณูเป็นหมัน; สายพันธุ์รักษาความเป็นหมัน; สายพันธุ์แก้ความเป็นหมัน; สายพันธุ์พ่อแม่; การพัฒนาสายพันธุ์; ความดีเด่นของลูกผสม; การผลิตข้าว; การทดสอบพันธุ์; สมรรถนะการผสม; ผลผลิต. |
| Ano: 2013 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5706 |
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| Sivapong Naruebal. |
| Survey and classification of highland rice cultivation areas to indicate acid soil crisis was conducted on altitude 700 meters above sea level. Soil sampling was conducted form 7 districts of Mae Hong Son province are namely Muang, Khun Yuam, Mae La Noi, Mae Sariang, Sop Muey, Pai and Pang Ma Pha in the year 2012-2013. A total of 115 soil samples were consisting of 68 paddies and 47 upland conditions. Soil samples were analysis to find out the soil pH. The result showed that the strongly acid, moderately acid and slightly acid are 39.13, 21.74 and 20.86 percentages, respectively. In other hand, the natural, very strongly acid and extremely acid are 8.7, 7.83 and 1.7 percentages, respectively. However 39 percent of upland soil sample and 38 percent of paddy... |
| Tipo: PhysicalObject |
Palavras-chave: Soil survey; Soil classification; Upland rice; Highland paddy; Acid soil; Soil analysis; PH; Mae Hong Son province; การสำรวจดิน; การจำแนกดิน; ข้าวไร่; ข้าวนาที่สูง; ดินกรด; การวิเคราะห์ดิน; พื้นที่สูง; การผลิตข้าว; ความเป็นกรดด่างของดิน; ปฏิกิริยาของดิน; ผลผลิต; จ.แม่ฮ่องสอน. |
| Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5711 |
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| Wattana Posiri; Warunya Dantaweesin; Raumjit Nokkoul. |
| This research aimed to access farmer participatory breeding in selecting the local upland rice varieties for desirable agronomic traits, good cooking and eating grain characteristics. The research carried out in the land reform area of amphoes Mueang, Lamae, Thung Tako in Chumphon province. The experiment comprised 12 upland rice varieties, 11 experimental lines and 1 standard check, by using the Randomized Complete Block design with 4 replications. Results indicated that farmers had selected Samdeaun, Phukhaotong, Nahngkruan, Lebnok and Dawkkham varieties for desirable agronomic traits with reasonable uniform panicle, good tillering ability, long panicle, many secondary branches, large and heavy grains. For cooking and eating qualities, they selected... |
| Tipo: PhysicalObject |
Palavras-chave: Upland rice; Farmer participatory; Plant breeding; Agronomic traits; Cooking qualities; Eating qualities; Food security; ข้าวไร่; เกษตรกร; การผลิตข้าว; การคัดเลือกพันธุ์; การปรับปรุงพันธุ์; การทดสอบพันธุ์; คุณภาพผลผลิต; การมีส่วนร่วม; การบริโภคในครัวเรือน; ความมั่นคงทางอาหาร; พันธุ์พื้นเมือง. |
| Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5670 |
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| Registros recuperados: 41 | |
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