鲁甸县抗寒核桃优良无性系选育研究

通过对鲁甸核桃初选、复选、决选的选育过程，共选育出40株特优单株，出仁率为50.07%~68.50%，壳厚为0.60~1.24 mm，含油率为65.2%~72.7%，种仁饱满充实，仁色白、黄白、灰白或淡紫，易取仁，丰产性好，具有一定抗寒性；通过建立无性系测定林的选育过程，共选育出20个抗寒核桃优良无性系，分别是滇鲁X004、滇鲁X006、滇鲁Z001、滇鲁Z003、滇鲁Z004、滇鲁Z007、滇鲁Z009、滇鲁Z012、滇鲁Z014、滇鲁Z015、滇鲁Z016、滇鲁Z064、滇鲁D001、滇鲁D002、滇鲁D003、滇鲁D004，滇鲁D005、滇鲁D006、滇鲁D013、滇鲁XJ001。具有偏早实、丰产、质优且具有一定抗寒性的特点，为滇东北核桃产业发展提供了良种基础。

Breeding of Cold Resistant Walnut Superior Clones in Ludian County

Through original selection, multiple selection, and determinative selection, 40 excellent individual trees were selected with the kernel percent of 50.07%-68.50%, shell thickness of 0.60-1.24 mm, and the fat content of 65.2%-72.7%. Other features included full kernel with white, yellowish white, grey white or light purple colour. The kernels were easily to be separated from the shells, the yields were high, and the plants could resist cold in some extents. Through establishing clone test plantation, 20 clones of cold resistant walnut were selected, namely, Dianlu X004, Dianlu X006, Dianlu Z001, Dianlu Z003, Dianlu Z004, Dianlu Z007, Dianlu Z009, Dianlu Z012, Dianlu Z014, Dianlu Z015, Dianlu Z016, Dianlu Z064, Dianlu D001, Dianlu D002, Dianlu D003, Dianlu D004, Dianlu D005, Dianlu D006, Dianlu D013 and Dianlu XJ001. The clones selected had the characteristics of earlier fruiting, high yield, and cold resistance, which would provide the basis for the development of walnut industry in northeastern Yunnan.