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 ผลงานตีพิมพ์ในวารสารวิชาการEvaluation of Yield Potential and Combining Ability in Thai Elite Cassava Varieties for Breeding Selectionผู้แต่ง: นายพงษ์พิทักษ์ ยวนจิต,  Dr.Supachai Vuttipongchaikij, Associate Professor , Dr.Passorn Wonnapinij, Assistant Professor , Hernan Ceballos, Dr.Ekaphan Kraichak, Associate Professor , Dr.Choosak Jompuk, Associate Professor , Dr.Piya Kittipadakul, Assistant Professor , วารสาร: 
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ผลงานตีพิมพ์ในวารสารวิชาการCombining ability test of parental lines for three-line hybrid rice breedingผู้แต่ง:Anuchita Rattanarat, Thanakorn Wangsawang, Dr.Weerachai Matthayatthaworn, Assistant Professor , Ronnachai Changsri, Fisseha Worede, Khin Sandar Cho, Dr.Tanee Sreewongchai, Associate Professor , Dr.Prapa Sripichitt, Associate Professor , วารสาร: |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Combining Ability of Inbred Lines Derived from Quality Protein Maize Populations) ผู้เขียน:ดร.พีรนุช จอมพุก, รองศาสตราจารย์ , ดร.วาสนา วงษ์ใหญ่, รองศาสตราจารย์, Somsak Apisitvanich, ดร.ชบา จำปาทอง สื่อสิ่งพิมพ์:pdf AbstractQuality protein maize (QPM) with improved kernel quality over o2o2 soft genotypes was developed by introducing modifier genes and selecting for a hard, vitreous endosperm in o2o2 germplasm at the International Maize and Wheat Research Center (CIMMYT). Three QPM populations developed by CIMMYT were used in the research. S0-plants of preferred morphological characters were selfpollinated to produce S1 until S3 lines. Ten S3 inbred lines were examined for the opaque-2 gene using the phi057 marker and a diallel cross was made. The experiment was conducted in a 7?7 simple lattice design at the National Corn and Sorghum Research Center, Thailand. The results showed that 10 inbred lines were detected with polymorphism the same as opaque-2 maize (o2o2) but were different from nonopaque- 2 maize. The protein content in endosperm of these inbred lines ranged from 7.76 to 8.61% while those of opaque-2 and non-opaque-2 maize contained about 8.45 and 8.73%, respectively. However, the protein content of inbred lines, the diallel cross and check variety were not significantly different. Means of grain yield (t ha-1) were 4.48 for the diallel cross (F1), 1.97 for inbred lines, 3.30 for opaque- 2 and 6.61 for non-opaque-2 hybrid check. However, grain yield of the best diallel cross was 6.10 t ha-1 which was not significantly different from the non-opaque-2 hybrid. Protein contents were not significant among the diallel cross, opaque-2 and non- opaque-2 hybrids. Tryptophan content in endosperm of the diallel cross was higher than non-opaque-2 hybrids. Inbred P10 had the best combination of GCA effects for grain yield. Moreover, inbred lines, P1, P7, P8 and P9 also gave positive GCA effects. |
 ที่มา:การประชุมทางวิชาการ ครั้งที่ 49 มหาวิทยาลัยเกษตรศาสตร์หัวเรื่อง:ศักยภาพการคัดเลือกสมรรถนะการรวมตัวของพ่อแม่พันธุ์ในการปรับปรุงพันธุ์มันสำปะหลัง |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Specific Combining Ability of Ornamental Peppers (Capsicum annuum L.)) ผู้เขียน:นายธัญญะ เตชะศีลพิทักษ์, รองศาสตราจารย์ , ปรัชญา เตวิยะ สื่อสิ่งพิมพ์:pdf AbstractOrnamental pepper single cross varieties are required because of their high yield and high quality. Production of single cross requires superior parental lines. This study was conducted to screen for parental lines of which could be used for the production of superior single cross. The 11 female parental lines (No. 1, 2, 3, 4, 14, 53, 62, 67, 79, 80 and 81) were topcrossed to a tester (No. 77). All 11 single crosses and the parental lines were tested at Horticultural experimental field, Kasetsart University, Bangkhen Campus, Bangkok from August 2000 to February 2002, using a Completely Randomized Design with 4 replications. Six characteristics were evaluated. The results showed the significant differences in 6 characteristics. All hybrids showed the average percent of heterosis over mid parent and better parent for yield per plant. The hybrids No. 1 X 7, 3 X 77, 4 X 77, 14 X 77, 53 X 77, 62 X 77 and 67 X 77 had the highest heterosis of number of fruits per plant and fruit weight per plant. The selected female parental lines, based on their specific combining ability, were No. 1, 3, 4, 14, 53, 62 and 67. They may be used as the female parental lines with their counterpart male tester for commercial hybrid production. The relationships among the characteristics were observed and the canopy size was positively correlated with number of fruits per plant and fruit weight per plant. The fruit size was positively correlated with fruit weight per plant and negatively correlated with number of fruits per plant. |