甘蔗新品种桂糖49号的选育与种性评价

桂糖49号是广西农业科学院甘蔗研究所以赣蔗14号作母本、新台糖22号作父本进行有性杂交,经多年选育而成的甘蔗新品种,2015年6月通过广西农作物品种审定委员会审定。多年多点试验表明,桂糖49号出苗率高,分蘖力强,分蘖成茎率高,有效茎多,中大茎,蔗茎均匀,实心,易脱叶,抗倒伏;宿根发株率高,宿根性强;早熟、高糖、高产、稳产、不易孕穗开花、综合性状优良、适应性广。2013—2015年广西区试2年新植1年宿根蔗茎产量104.29 t·hm~(-2),比新台糖22号(CK)增产10.39%;11月至翌年2月平均蔗糖分14.80%,比CK同期高0.56%(绝对值),平均含糖量15.43 t·hm~(-2),比CK提高14.64%;2014年生产试验平均蔗茎产量105.89 t·hm~(-2),比CK增产10.18%。

Breeding and characterization of a new sugarcane variety Guitang 49

Guitang 49 was selected from cross progeny of ROC22 ( female parent) × Ganzhe 14 ( male parent) at the Guangxi Sug￣arcane Research Institute, Guangxi Academy of Agricultural Sciences. It was approved as a new variety by the Guangxi Crop Variety Approval Committee in June 2015. Multiple￣year and multiple￣location evaluations showed that Guitang 49 had the following good characteristics:high emergence rate;strong tillering ability with more millable, uniform, mid￣to large size, and solid stalks;easy defoliating leaves at maturity;resistance to lodging;good ratoon ability with high germination rate;early maturity;high sugar con￣tent;high and stable yield;non￣flowering;and wide adaptability. During 2013-2015, the average cane yield of Guitang 49 from re￣gional tests in Guangxi involving two plant crop years and one ratoon crop year was 104.29 t??hm-2 , which was 10.39% higher than the check variety ROC22. The average sucrose content was 14.80% during November to the next February, which was 0.56% higher than ROC22. The average sugar content was 15.43 t??hm-2 , 14.64% higher than ROC22. In 2014 Guangxi sugarcane production tri￣al, Guitang 49 produced 105.89 t??hm-2 , which were 10.18% higher than the control ROC22.