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

Abstract

This study’s objective is to select 30 waxy corn hybrids by using 2 waxy corn germplasm from Kasetsart University (KKU) as a tester line and 15 waxy corn germplasm from the University of Phayao Maize Improvement (UPMI) as mother lines. Experimental was conducted between August and October 2021, there are 4 commercials that were planted to compare yield trial evaluation Sweet Violet, Sweet Whiteb25, Samsee, and Sweet Purple. The result showed that economic yield characters, T3xUPW57 and T4xUPW74 were the best of both green and white weights were 1685.50 and 1243.00 kg per rai, respectively, when compared to commercial varieties. It was found that more than Sweet white 25, Samsee, and Sweet purple. The earliest day to flowering; (tassel and silk) and day to harvest were T3xUPW4, equal to 46 days and 66 days, respectively, faster than commercial strains. Moreover, eating quality It was found that the tenderness and flavor of all crossbreeds were highly favorable, comparable to all commercial strains, and the crossbreeds that received more tenderness than the sweet white 25 was T4xUPW79. In addition, the foliar disease appearance of all hybrids was resistant to spotted leaf virus (SCMV) and rust (SR) is equivalent to a commercial strain.