四倍体少籽西瓜新品种兴桂六号的选育

Breeding of a new tetraploid few-seed watermelon variety Xinggui 6

【目的】选育适合露地爬地栽培和大棚立架栽培的四倍体西瓜新品种,提高广西西瓜产业竞争力。【方法】于2008年利用四倍体西瓜403作母本,四倍体西瓜JL作父本,配组选育四倍体一代杂交种兴桂六号,2009-2010年,连续两年进行露地爬地栽培品比试验,2011-2012年,连续两年进行大棚立架栽培品比试验。【结果】兴桂六号全生育期春造90-100 d,秋造65-80 d,果实发育期29-35 d。单果重3.5-4.5 kg,果实圆形,表皮深绿覆盖墨绿条带,有光泽,皮厚1.0-1.2 cm,耐贮运。果肉大红色,剖面光滑,纤维黄筋少,种籽少,汁多,质实、细密、清甜爽口,品质优,中心含糖11.5%。2009-2010年,连续两年露地爬地栽培品比试验,平均产量分别为38081.3和34602.8 kg/ha,分别比对照增产15.6%和13.7%。2011-2012年,连续两年大棚立架栽培品比试验平均产量分别为66577.5和63169.5 kg/ha,分别比对照增产18.1%和15.0%。2012年广西西瓜区域试验平均产量34182.0 kg/ha,比对照增产10.8%;2010-2012年,露地爬地生产栽培示范试验平均产量32550.0-36585.0 kg/ha,比对照增产10.6%-15.5%;大棚立架生产栽培试验平均产量60178.5-63168.0 kg/ha,比对照增产12.6%-15.2%。【结论】四倍体杂交西瓜新品种兴桂六号适宜露地栽培和大棚立体栽培,在广西西瓜种植区均可推广种植。

【Objective】A new tetraploid few-seed watermelon variety was bred suitable for open field and greenhouse to diversify watermelon varieties for enhancing competitiveness of Guangxi watermelon industry. 【Method】In2009, tetraploid watermelon 403（female parent） and tetraploid watermelon JL（male parent） produced a new hybrid tetraploid watermelon Xinggui 6, which was tested for two consecutive years in open field（2009-2010） and greenhouse（2011-2012）. 【Result】The entire growth period of Xinggui 6 was 90-100 d in spring and 65-80 d in autumn. Its fruit maturity period was 29-35 d. Its single fruit weight was 3.5-4.5 kg and the fruit was round, dark green and bright covered by green stripes. The rind thickness was 1.0-1.2 cm. Xinggui 6 was resistant in storage and transportation. The pulp was bright red and smooth with less fiber, less seed and more juice. Xinggui 6 was firm, fresh and sweet with good quality and its sugar content was 11.5% in the center. In 2009-2010, its average yield was 38081.3 and 34602.8kg/ha, up by 15.6% and 13.7% over the control. In 2011-2012, its average yield was 66577.5 and 63169.5 kg/ha,up by 18.1% and 15.0% over the control. In 2012, the average yield in Guangxi regional trial was 34182.0 kg/ha, up by 10.8%. In 2010-2012, the average yield in open field was 32550.0-36585.0 kg/ha, up by 10.6%-15.5% and the average yield in greenhouse was 60178.5-63168.0 kg/ha, up by 12.6%-15.2%. 【Conclusion】This new hybrid tetraploid watermelon Xinggui 6, appropriate for open field and greenhouse, should be extended in watermelon planting areas of Guangxi.