TAMNET was initiated at the First South-East Asian Maize Workshop in Thailand in January 1993. The overall objectives are to assist the participating institutions/departments, to promote voluntary production and sharing of data on selected subject matters, and to establish effective cooperation in research on mutually selected topics. The first coordinator was the first author (January 1993 ～September 1997), and the second and third coordinators were CIMMYT staff (October 1997～2001 ). TAMNET activities were suspended due to CIMMYT funding problems. The first author was invited to resume the role of coordinator of TAMNET in 2002, through the efforts and support of FAO, APAARI and partially APSA. The first revival TAMNET trials were conducted in 2003～2004, with 18 full-season hybrids. Hybrids were from four contributing countries and two private companies, and the trials were grown in China, Indonesia, Nepal, Thailand and Vietnam. Nine hybrids out-yielded the checks across 10 locations in the 5 countries. The promising hybrid KSX 4452 produced 7889kg/ha of grain, which was 20％ higher than the hybrid check, and had regression coefficient (b)=0.85 and sum of squares for deviations from regression (s2d)=1.0. The other three most- promising hybrids were: KSX 4507(7715kg/ha, b=0.91, s 2d=1.19); KSX 4601(7713,0.90,1.06); and NSX 022026 (7671,1.01,0.88). These promising corn hybrids and their parents are useful germplasm for farmers, corn breeders and young scientists in TAMNET countries.
Corn Maize Promising hybrids in South-East Asia
C. Chutkaew S. Jampatong P. Grudloyma F. Xingming M. Dahlan N. H. Tinh D. P. Sherchan E. Guimaraes R. Paroda
Kasetsart University Alumni Association under the Kings Patronage, Bangkok 10900, Thailand National Corn and Sorghum Research Center, Pakchong, Nakhon Rajchasima 30820, Thailand Nakhon Sawan Field Crops Research Center, Tak Fa, Nakhon Sawan, 60190, Thailand Maize Research Center, Institute of Food Crops, YAAS, Kunming 650205, P. R. China Research Institute for Maize & Other Cereals, P. O. Box 1173, Ujung Pandang, Indonesia National Maize Res. Institute, Dan Phuong, Hatay-Vietnam National Maize Res. Project, P. O. Box 5459, Kathmandu, Nepal Senior Officer (Cereals/Crops), AGPC FAO, Rome, Italy. Elcio Executive Secretary (APAARI) Tashkent 700000, Uzbekistan