General (OCA) and specific (SCA) combing abilities and their interaction with scar were investigated in one set of F’s among eight inbreeds lines Significant OCA was dcicctcd in the combined analysis for most of the trails except for the date of mid-silking. Also, significant SCA was detected for all trails with the exception of car height, car length and mid-tassclling date Both GCA.ycar and SCA.ycar were significant only for mid-silking date. plant height and numbcr of kernels/row. Calculated ratios of GCA.year/GCA was higher than the ratio GCA.ycarISCA for mid-silking datc indicating (bal the additive and additive b additive effects were highly influenced by year for this Irait As for plant height and number of kernels/row, the ratio SCA.vcar/SCA was higher than GCA.year!GCA indicating that thc non-additive effects were more influenced b year. Significant OCA by year interaction was detected for mid-lassclling date. On the contraiy, significant SCA by year interaction was detected for car diameter and grain yield/plant. |
