Abstract:

In order to study the application potential of new selected sorghum parental lines and improve crossbreeding efficiency, their stigma vigor and combining ability were researched. The results showed that stigma vigor of XSA and XJA were stronger, so they had a longer pollination time and high seed setting rate. Sixteen crossing combinations were made by 4 new selected R lines and 4 A lines with the method of incomplete dual cross. Plant height, spike length, grain weight of spike, 1000 grain weight and Protein content were analyzed by DPS. The results indicated that: male sterile lines XBA and XSA, restorer lines 29R and 22R performed better integrated traits, they had higher application potential in breeding and production. As to yield traits, XBA/59R, XSA/59R, XJA/22R and XWA/59R were better heterotic patterns.