核桃优良单株选择

Selection of advanced trees of walnut

在对四川省南部县核桃资源调查发掘的基础上，通过群众报优、初选、复选和决选，筛选出6个核桃优良单株。优良单株平均单果重10．83-15．77g，出仁率45．91％-57．34％，粗脂肪含量63．2％-70．6％，粗蛋白含量13．2％-16．8％，同时兼具口味香甜、病虫害少，丰产稳产等优良性状，各项指标均达到了核桃优树选择标准。

Based on the germplasm resource investigation of walnut in Nanbu County of Sichuan Province, 6 elite plant strains were selected through preliminary, repeated and final selection. The mean fruit weight was 10. 83 - 15. 77 g, seed kernel rate was 45.91% - 57. 34%, crude fat content was 63.2% - 70. 6%, crude protein content was 13.2% - 16.8%. Meanwhile, they had characters of fine flavor, few diseases and pests, high and stable yield, all of the indicators reached the selection criteria of advanced trees.