Analysis of Combining Ability for Main Characters of 17 Parents and Com-binations of Flax
In order to screen high-quality flax varieties as hybrid parent combinations and further break through in flax yield and quality,8 newly cultivated flax varieties in our unit were used as female parents and paired with 9 mature varieties to prepare a total of 72 hybrid combinations,aiming to determine the general combining ability(GCA)and special combining ability(SCA)of the parents.The results showed that CP2205 showed outstanding GCA performance in terms of fruit number per plant closely related to yield,and also showed positive performance in terms of thousand grain weight and number of grains per fruit.In terms of quality,GCA performs well in oil content,linoleic acid,linolenic acid and other important aspects,which can be used as key strains for combination.When configuring combinations,varieties with higher GCA values for protein and lignin can be selected to en-hance the yield and quality of offspring materials.09-3-11 has a higher GCA effect on linolenic acid and linoleic acid,but has a lower effect on the number of fruits per plant and the number of seeds per fruit.When combining,we should select the varieties with outstanding GCA performance in these two aspects as parents,so that it is easier to select excellent offspring.
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