晚熟荔枝新品种大唐红的选育

Breeding report of a new later-maturing litchi cultivar Datanghong

大唐红荔枝是由实生树变异选育而来的晚熟荔枝新品种。对多代无性繁殖后代植株的性状观察表明,遗传性状表现稳定;主要优异性状为:①焦核率高,可食率高;②坐果力强,丰产稳产,病害少无裂果;③晚熟性突出,成熟期为6月下旬至7月中旬;④果皮鲜红、果实心形、平均单果质量40.68 g,最大单果质量48.70 g,肉厚爽口,清甜有香味,品质佳,可食率80.86%,可溶性固形物含量(w,后同)19%~24%,总糖含量19.3%,可滴定酸含量0.09%,维生素C含量274.24μg·g^(-1)。大唐红荔枝于2023年3月获得中华人民共和国农业农村部植物新品种权授权,是一个极具推广应用价值的优良晚熟新品种。

The new litchi(Litchi chinensis Sonn.)cultivar Datanghong was selected from occasional seedling.Observation on several generations of vegetatively propagated individuals showed that the hereditary traits of the line were stable.The new variety had high production and yield stability.The fruits had high edible rate,highly aborted seeds and less cracking.The fruit maturing date was late,being harvested in late June to mid July,7-10 days later than Guiwei and 3-7 days earlier than Heli.The fruit was heart-shaped,large,with bright red peel and inconspicuous suture line.The flesh was thick and crispy,sweet and slightly aromatic.The average weight of single fruit was 40.68 g and the maximum weight was 48.70 g.The edible rate was 80.86%,the soluble solids content was 19%-24%,the total sugar content was 19.3%,the titratable acid content was 0.09%,the vitamin C content 274.24μg·g^(-1) and the coke core was 85%.It had a good grafting compatibility with Heli.The tree form was nearly round.The tree vigor was medium.The leaves were long elliptic and opposite.The flower was cone-shaped.The planting spacing was(4-5)m×(5-8)m.The short cutting and light thinning,and bending would be recommended.The variety would be suitable for large-scale cultivation in the hot areas of low latitude and low altitude in Guangxi.