西瓜新品种陇科2号的选育

A New Watermelon F_1 Hybrid — ‘Longke No.2'

陇科2号是以高代自交系08C41为母本、08C44为父本杂交选育而成的中早熟西瓜一代杂种。露地栽培全生育期90d(天)左右,果实发育期30 d(天)左右,塑料大棚栽培全育期109 d(天)左右,果实发育期35 d(天)左右;植株生长稳健,分枝力适中,易坐果,主蔓第1雌花着生于第5~7节,以后每隔3~4节再现1朵雌花。果实圆球形,翠绿皮上覆有深绿色齿条带,果形圆正,果皮硬韧,皮厚0.9 cm,耐贮运;果肉大红色,肉质酥脆,多汁爽口,风味好,中心含糖量达12.4%,中边糖梯度小;单瓜质量3.6 kg左右,每667 m^2产量4 270 kg左右。适合甘肃及同等生态区露地或春大棚栽培。

‘Longke No.2’is a new watermelon F1 hybrid of mid-early maturity,bred by crossing inbred lines‘08C41’as female parent and‘08C44’as male parent.Its whole growth period in open field is about 90 days and 109 days under plastic shed.The fruit development periods under these 2 cultivation conditions are about 30 days and 35 days,respectively.The plant grows healthily and branches moderately.It is easy to set fruit.The first female flower of main vine sets on 5-7th node.The next female flower appears on every 3-4 sections.Its fruit is of round shape and the green peel covered with dark green stripes.Its peel is 0.9 cm in thickness and tolerant to storage and transportation.The flesh is bright red in color,crisp,juicy with good flavor.The central soluble solid content is 12.4%with smaller sugar gradient between fruit center and edge.The single fruit weight is about 3.6 kg and average yield is 64.05 t·hm-2.It is suitable for cultivation in Gansu Province and areas with similar ecological conditions in open fields or greenhouse in spring.