关键词: 叶绿素, 叶绿素

Abstract:

In order to research the characteristic performance of new sugarcane varieties introduced from Australia, variety comparative trials were carried out. According to the results from 2010-2011 variety comparative trials on paddy field in the test base of South China Agricultural University (located in Ningxi, Zengcheng City, Guangdong Province), including one plant cane and one ratoon cane, Q200B, Q189 and Q208 were the best of all eight trial varieties in comprehensive characters with early maturity or mid-early maturity, high sucrose content, stable cane yield, strong ratoon ability and good agronomic characters. The mean sucrose content in cane, from middle November to middle December, of the three varieties mentioned above were 14.53%, 15.11% and 14.23%, were lower 0.44%, higher 0.14% and lower 0.74% (absolute value) than those of ROC16 (CK1), respectively; were higher 0.03%, 0.61% and lower 0.27% (absolute value) than those of ROC22 (CK2), respectively. The mean cane yield and sugar yield of Q200B, Q189 and Q208 were 110829 kg/hm2, 105830 kg/hm2, 92674 kg/hm2 and 16110 kg/hm2, 15999 kg/hm2, 13186 kg/hm2, increased by 29.1%, 23.3%, 8.0% and 25.4%, 24.5%, 2.6% in comparison with the control variety ROC16, respectively; increased by 2.1%, declined by 4.3%, 7.2% and increased by 0.4%, declined by 0.2%, 17.8% in comparison with the other control variety ROC22, respectively. Q155 and Q151 were very early maturity, high sucrose content, but small and medium-sized stems, low cane yield. Q190 was a variety with high yield potential and better growth rate in the early growth stage, but late maturity and low sucrose content. Comprehensive characters of Q157 and Q96 were the worst in this trial. Intention to use of tested varieties has also been suggested in this paper.