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88 Chokeclrai A., Sansern 1. Chamipom A., Noppung C. and Chatpong B.Table 2. Kasetsart maize hybrids released from 1982-97.Hybrid Type I Check No. of triab Release year PedigreeAveraoeyieldOver checktfha':I,Suwan 2301 SC Suwan I (S) 37 1982 Ki3xKili 56 10.5C8Suw~Jn 2602 TC Suwan 2301 37 1986 (Ki 3 x Ki II) x Ki 20 6.2 11.4Suwan 3lOi TC Suwan 2602 95 1'J91 tKi 27 ~ Ki 28) x Ki 21 6.6 160Suwan 3501 SC Suwan3101 109 1993 Ki 32 x Ki 21 7.7 8.7Suwan 3502 SC Suwan 3101 48 1993 Ki36xKi21 78 85Suwan 3503 SC Sliwan 3101 63 1993 Ki43xKi21 7.7 103Sliwan 3504 SC Suwan 3101 125 1993 K.i44xKi21 7.7 102Suwan 3601 SC Sliwan 3504 101 1995 Ki 44 x Ki 45 6.7 4.5Suwan 3851 SC Sliwan 3504 57 1997 Ki46 x Ki 45 7.5 11.1Table 3.A Jist of public and private sector collaborators in the Cooperative Hybrid Yield Trialsduring 10 years (1987-96).KasetsartCooperator Location l Tested yearnIversityDepartment of AgricultureCargill SeedsCharoen Seeds (CP-Dekalb)Ciba-Geigy (Novartis)Pacific Seeds (Advanta)Pioneer Overseas (Thailand)Thai SeedsChiangmai Universit/Maejo Universit/NCSRC 2 (Suwan Farm), Pakchong,NakhonratchasimaNFCRC'Takfa, NakhonsawanPakchong, Nakhonratchasima (1987-93),Wangtong, Phitsanulok (1994-96)Salaengphan, Wangmuang, SaraburiTakhli, NakhonsawanKoktoom, Muang, LopburiKoktoom, Muang, LopburiTakfa, NakhonsawanMuang, ChiangmaiMaesamai, Maerim, ChiangmaiI All locations were irrigated, excepted for Maejo University.2 NCSRC = National Corn and Sorghum Research Center.3 CFRC = Nakhonsawan Field Crops Research Center.4 Chiangmai University and Maejo University were only testing sites.1987-961987-951987-961987-961987-961987-961987-961987-911991-961995-96