Analysis of Growth Performance and Nuts' Economic Traits of the Main Walnut Cultivars in Guangyuan City

Analysis was made of the growth performance and nuts' economic traits of the nine walnut cultivars in Guangyuan city.The results showed that (1) these cultivars had strong growth potential and high,stable yield characteristics.This area boasted an abundance of useful walnut varieties,so there was still a large space for characteristic variety development.(2) These walnut cultivars were appropriate in shapes and nut shell thickness with degraded and membranous diaphragm.Most of the nut shells were easily broken for kernel-taking with a high yield of kernels.Walnut cultivars with big nuts,high kernels-taking rate and storage stability should be chosen for variety extension,such as Shuchao 2,Qingchuan 1,Wanghe 1.(3) The coefficients of variation were low in average walnut diameter,crude fat content and kernel yield,which showed high genetic stabilities of these indicators;(4) there was a significant correlation among the weight of single walnut,the average walnut diameter,shell thickness,kernel,crude fat content and crude protein content.The correlation had a certain guiding significance for character variation and trait indicators change rule.