文冠果优良品种冠硕的选育

Selective Breed of Good Varieties of Xanthoceras Sorbifolium Bunge 'Guanshuo'

冠硕系文冠果自然实生后代中选育出的优良品种。长势强,植株较直立。花序可孕花多,坐果率高,每花序平均坐果4.8个。果实长圆柱形,果大,平均纵径6.8 cm,平均横径6.0 cm.果实成熟时3瓣开裂,果内种子数平均23.0粒,出籽率65.1%,种仁含油量62.1%.嫁接苗第2年结果,6年生单株产籽量1.6 kg,是实生树的7.5倍,丰产性较好。适宜在北方年均温7℃以上,海拔1 300 m以下的地段栽植,是寒冷、干旱、瘠薄丘陵山区的首选树种。

Guanshuo was a fine varieties which was selected from natural offspring of Xanthoceras sorbifolium Bunge. The plant was upright and growed vigorously. The number of fertile florets on inflorescence was large and the fruit setting rate was high. The average fruit setting number of each inflorescence was 4.8 and the plant was high yield. The fruit is long cylindrical and large which average vertical and across diameter were 6.8 cm and 6.0 cm. It is 3 petal cracking when the fruit was ripe and the average seed number in the fruit was 23.0. Seed-producing percentage of the fruit was 65.1% and the oil content of seed kernel was 62.1%. The grafted seedlings bore fruit in the second year. The seed yield of 6 year-old grafted plant was 1.6 kg per plant which was 7.5 times of seedling tree and had a good quality in yield. The variety was suitable for planting in the north area where annual average temperature above 7 ℃ and the altitude below 1 3 00 m. It was the preferred species for economic, afforestation and greening in the cold, dry and barren hilly area.