Screening Yield trials for Selection of New Waxy Corn Hybrids in Phayao.

Abstract

This study aimed to select 30 waxy corn hybrids by using 2 waxy corn germplasms from Kasetsart University (KKU) as a tester line and 15 waxy corn germplasm from the University of Phayao Maize Improvement (UPMI) as mother lines. The experiment was conducted between August and October 2021. Four commercials were planted to compare yield trial evaluation: Sweet Violet, Sweet White 25, Samsee, and Sweet Purple. The result showed that the economic yield characters of T3xUPW57 and T4xUPW74 were the best of both green and white weights. There were 1685.50 and 1243.00 kg per rai, respectively, compared to commercial varieties found more than Sweet White 25, Samsee, and Sweet Purple. The tasseling, silking, and harvesting of T3xUPW4 was 46 days and 66 days, respectively, faster than all commercial strains. With the people test, the flavor, and tenderness of all crossbreeds were highly favorable, comparable to all commercial strains, and more tenderness than the Sweet White 25 was T4xUPW79. The foliar disease appearance of all hybrids was resistant to spotted leaf virus (SCMV) and rust (SR) is equivalent to a commercial strain.