文冠果新品种‘中石4号’和‘中石9号’

‘中石4号’和‘中石9号’是从文冠果实生群体中选育出的新品种。树势均较强，速生，丰产，抗逆性强，雌花比例均在60%以上，单瓣花，种子单粒质量大，均在1.5 g以上，种仁含油率均在65%以上。‘中石4号’当年生枝被毛，绿色，小叶片表面有蜡质、光泽感强，蒴果中等大小，球形，果壳中等厚度。‘中石9号’多年生枝无毛，绿带紫红，小叶无蜡质，蒴果大，棱柱形，果壳厚。在辽西地区，‘中石4号’5月上旬盛花，8月上旬果实成熟，‘中石9号’5月中旬盛花，8月中旬果实成熟。两品种果实发育期均为75 d左右，均可在中国东北、西北、华北地区广泛栽植。

New Xanthoceras sorbifolium Cultivars‘Zhongshi 4’and‘Zhongshi 9’

‘Zhongshi 4’and‘Zhongshi 9’are new cultivars which are selected from seedling populations of Xanthoceras sorbifolium. They have the characteristics of strong tree vigor，rapid growth， high yield and high resistance. They have 60% ratio of female flowers. They have single petal flowers and large single grain weight，all of which are over 1.5 g，and the oil content of seed kernels is above 65%. The current-year branch of‘Zhongshi 4’is hairy and green. The mature leaves of‘Zhongshi 4’showed obvious wax and strong luster on the surface. The capsule of‘Zhongshi 4’is globose，medium in size and shell thickness. The current-year branch of‘Zhongshi 9’is glabrous and purplish red. The mature leaves of‘Zhongshi 9’don’t have wax. The capsule of‘Zhongshi 9’is prismatic and large with a thick shell. The full bloom stage of‘Zhongshi 4’and‘Zhongshi 9’starts at the early and middle of May，and the fruit maturity begins early and middle of August in Liaoning. The fruit development period is about 75 days. They can be widely planted in Northeast，Northwest，and Northern China.