葡萄柚新品种‘桂葡萄柚二号’的选育

Breeding report of a new grapefruit cultivar 'Gui-grapefruit No.2'

‘桂葡萄柚二号’是由‘红马叙’葡萄柚芽变单株选育而成。果实扁圆形,成熟期果皮不套袋为黄绿色,套袋后呈粉红色;果面光滑,果肉和囊瓣均为粉红色;果肉细嫩化渣,酸甜苦味适中,具有浓郁的葡萄柚风味。平均单果质量350 g,最大单果质量390 g;果形优美,果形指数0.87;每果实含种子3~5粒。果汁率55.7%,可溶性固形物含量10.1%,可食率79.41%,总糖55 g·L-1,总酸0.8%,糖酸比6.87,维生素C含量325 mg·kg^(-1),品质上乘;产量高,株产52.5 kg。果实生育期240 d,在广西南宁果实于11月中下旬成熟;萌芽率高,成枝力强,适应性强。耐贮性好,货架期达60 d,冷藏可达6个月。该品种适合在广西南宁地区栽培,第3年开花后可投产,树势生长旺盛,丰产稳产。

＇Gui-grapefruit No.2＇ is a new grapefruit cuhivar with excellent appearance. The variety was derived from a bud mutation of ＇Red-Marsh＇ grapefruit. The variation maternal plant was discovered for its bigger fruit size and better fruit quality, more vigorous tree and higher resistance of citrus canker, in an orchard of ＇Red-Marsh＇ grapefruit which was planted in 2008 in Tanle village, Wuming county.