第7轮全国甘蔗新品种新宿2年广东遂溪试点结果

对广东遂溪试点全国第7轮甘蔗新品种第1年新植和第2年宿根试验的蔗茎产量、含糖量等重要性状采用裂区试验统计模型进行汇总分析。结果表明，第1年新植的蔗茎产量和含糖量都相应极显著高于第2年宿根，且品种与年份间互作显著；11个参试品种中，以粤甘24号和粤甘26号综合表现较为突出，新宿平均蔗茎产量和含糖量都名列参试品种前2名，前者宿根性较强、较早熟、糖分较高，后者宿根性中等、特早熟、糖分高。

Result of the Two Years Regional Trial in Succession for National Sugarcane New Varieties in Suixi, Guangdong

The two years trial in succession for national sugarcane new varieties was carried out in Suixi, Guangdong during 2009 and 2010. Results showed that both cane and sugar yields in the first plant year were very significantly higher than those in the next ratoon year, which were analyzed by split-plot model, and it also showed that the genotype × year interaction was very significant. In the other hand, both cane and sugar yields of Yuegan24 and Yuegan26 were obviously significantly higher than those of the others, ranking first and second among the eleven varieties tested respectively. The former had stronger ratooning ability, earlier maturity and higher sugar content, while the ratooning ability of the latter with earliest maturity and highest sugar content was moderate.