灵武长枣新品系特性比较

Brief Introduction of New Strain Characteristic of 'Lingwu Jujube'

灵武长枣3号、4号优系是宁夏农林科学院自2000年以来选育的2个最重要的灵武长枣新品系。灵武长枣3号最突出的生物学特性是针刺退化，与普通灵武长枣相比，果实偏晚熟1～2d，果重增加1．4g，果形指数和核型指数增大8．89％、10．10％，较丰产，抗寒性较强；灵武长枣4号最突出的生物学特性是果实早熟7d，丰产性较强，树体抗寒性较强。这2个新品系将为灵武长枣品种的更新换代提供良种支撑。

＇Lingwu Jujube No.3＇ and ＇Lingwu Jujube No.4＇ were the new two important breedings of Lingwu Jujube selected by Academy of Ningxia Agriculture and Forestry Science since 2000. ＇Lingwu Jujube 3＇, the most prominent characteristic is acupuncture degradation, compared with ordinary Lingwu, fruit partial late 1-2 d, increased 1.4 g fruit weight, fruit shape index and karyotype of index 8.89%, 10.10%, with high yield and strong cold resistance; ＇Lingwu Long Jujube 4＇ most prominent characteristic is the fruit of early 7 d, productivity strong, cold resistance and strong tree. The 2 strains of Lingwu long jujube varieties will provide the upgrading of thoroughbred support.