荸荠新品种桂蹄2号的选育

A New Water Chestnut(Eleocharis tuberose)Variety —'Guiti No.2'

桂蹄2号是以广州番禺地方荸荠品种为材料,通过组织培养产生体细胞无性系变异,在变异群体中筛选优良变异单株,采用组培技术培育而成的荸荠新品种。以组培苗作为生产种苗,4月中下旬～5月初育苗,育苗期25～30d(天),大田繁苗期约50d(天),繁殖系数可达20倍;大田生育期约140d(天),株高95～105cm,球茎扁圆形,脐微凹,横径3.5～5.5cm,纵径2.5～3.0cm,平均单球茎质量26g,最大可达50g,芽粗,皮稍厚,深红色,较耐贮运,每667m2球茎产量2500～3500kg,适宜在广西地区种植。

Taking local cultivar of water chestnut from Panyu district of Guangzhou city as material,the elite cultivar of water chestnut'Guiti No.2'was selected from the colonies of somaclonal variation produced by micropropagation technology,and propagated via tissue culture.The plantlets were used as seed in production,The propagation rate could reach up to 20 times,It took 25-30 days for seedling culture and about 140 days in field propagation.The seedling was 95-105 cm in plant height.Its corm was of flat round shape with slightly concave umbilicus.Its horizontal and vertical diameter was 3.5-5.5 cm and 2.5-3.0 cm,respectively.The average weight of single corm was 26 g.The corm yield was 37.5-52.5 t·hm-2.It is suitable for planting in Guangxi.