1988 Volume 57 Issue 4 Pages 715-721
The objective of this study was to find high wet endurance cross parents for a malting barley breeding program. Barley cultivars containing newly developed malting barley cultivars were grown under an excess soil moisture treatment (irrigated condition) at the internode elongation stage. Principal Component Analysis (PCA) was applied for two barley populations; 78 two-rowed barley cultivars and 51 late-maturing cultivars. Characters for PCA were the reduction ratios of culm length and four yield components (number of kernels per ear, number of ears per plant, seed fertility and 1000 kernel weight) by the treatment. The reduction ratios was calculated as (the mean value of excess soil moisture plots/that of control plots)×100. Component l by the PCA was considered to be a reliable index for wet endurance of barley cultivars. Among 78 two-rowed and 51 late-maturing barley cultivars tested, several cultivars were less-damaged under the excess soil moisture condition and were selected as the wet endurance cross parents in a malting barley breeding program.
