| 【Objective】The study was conducted to screen out sweet sorghum and Sorghum bicolor×Sorghum
sudanense varieties suitable for planting in western Guangdong.【Method】Taking the introduced sweet sorghum and
Sorghum bicolor×Sorghum sudanense as test materials, the phenological period, agronomic characteristics and conventional
nutritional components（crude protein（CP）, crude fiber（CF）, ether extract（EE））of 8 sweet sorghum varieties
（Niumowang, Hainiu, Baizhan, Dalishi, Desheng, Daka, Juejia, Lvjuren）and 5 Sorghum bicolor×Sorghum sudanense
varieties（Baobaisi, Biaobingyucao, Jiebao, Deli, Leshi）were analyzed. And the organic matter digestibility was calculated.
【Result】There were some differences in phenological period, plant height, stem diameter and stem-leaf ratio among
different varieties. The hay yield of sweet sorghum was 7.13-18.22 t/hm2, and the contents of CP, CF and EE were 5.97%-
8.99%, 22.91%-33.01% and 1.67%-3.00%, respectively. The hay yield of Sorghum bicolor×Sorghum sudanense
was 5.63-19.99 t/hm2, and the contents of CP, CF and EE were 6.39%-7.04%, 25.30%-30.44% and 1.51%-2.40%,
respectively. Among the 8 sweet sorghum varieties, Desheng had the highest hay yield, which was significantly higher than
that of other varieties. Among the top 3 sweet sorghum varieties in hay yield, the CP content of Desheng was significantly higher than that of Lvjuren and Dalishi, however, the digestibility of organic matter was significantly lower than that of Dalishi.
Baobaisi had the highest hay yield among the 5 Sorghum bicolor×Sorghum sudanense varieties, which was significantly higher
than that of other varieties. Baobaisi and Leshi were the top two Sorghum bicolor×Sorghum sudanense varieties in hay yield,
but there was no significant difference in CP content and organic matter digestibility between them【Conclusion】Desheng,
Dalishi and Baobaisi have good production performance in western Guangdong Province, and they are suitable to be promoted
and planted in this area. |
