Selection of high yield white sesame line

Abstract

This research aimed to improve white sesame varieties for high grain yield by selecting 19 white sesame lines through hybridization and subsequent selection. These lines were preliminarily compared in a trial with a check variety, white sesame DOA Ubon Ratchathani 2. The experimental design was a randomized complete block (RCB) with 3 replications and 20 treatments (varieties/lines) and conducted during both the early and late rainy seasons of 2024 at the Ubon Ratchathani Field Crops Research Center. Results from the early rainy season trial showed statistically significant differences in sesame yields. The line WSUB64-57-1-1-1 had the highest yield at 208 kg/rai, but it was not significantly different from lines WSUB64-25-2-1-1 and WSUB64-58-1-1-1, which yielded 196 and 179 kg/rai. higher than the check variety, which yielded 196 and 106 kg/rai. In the late rainy season trial, yields also showed statistically significant differences. The check variety DOA Ubon Ratchathani 2 had the highest yield at 77 kg/rai. The average yield from both seasons indicated that lines WSUB64-25-2-1-1, WSUB64-57-1-1-1 and WSUB    64-58-1-1-1 showed potential for high yields, with average yields 30%, 29%, and 26% higher than the check variety, respectively. As a result, 11 white sesame lines were selected from the preliminary trials. These lines are: WSUB64-26-1-1-1 WSUB64-57-2-1-1 WSUB64-22-2-1-1 WSUB64-57-3-1-1 WSUB64-57-1-1-1 WSUB64-58-2-1-1 WSUB64-58-1-1-1 WSUB64-84-2-1-1 WSUB64-25-2-1-1 WSUB64-58-3-1-1 and WSUB64-25-2-2-1 for standard trial with check variety, DOA Ubon Ratchathani 2