江西农业学报2016，Vol.28Issue(12)：1-7,7.DOI:10.19386/j.cnki.jxnyxb.2016.12.01
北移区木薯品种产量特征的相关分析
Correlation Analysis of Yield Characteristics of Cassava Varieties Planted in Jiangxi Province
摘要
Abstract
Through the analysis of 99 cassava varieties with high yield index characteristics in Jiangxi Province , this paper proposed the key indexes affecting the yield , in order to provide basis for cassava breeding and variety introduction in this prov-ince.The results showed that: among 13 indexes, the single-plant stem and leaf fresh weight, single-tuber fresh weight and sin-gle-plant tuber fresh weight had larger variation coefficient, while stem diameter, dry matter rate and tuber diameter had smaller variation coefficient.Correlation analysis showed that fresh tuber yield had a very significant linear positive correlation with tuber length, single-tuber fresh weight and harvest index, and it was also very significantly parabolically correlated with stem diameter, tuber diameter, single-plant stem and leaf fresh weight, single-plant tuber fresh weight, and biomass; when fresh tuber yield reached the highest value, stem diameter, tuber diameter, single-plant stem and leaf fresh weight, single-plant tuber fresh weight and biomass were 3.92 cm, 5.56 cm, 4.16 kg, 4.76 kg and 104.53 t/hm2 , respectively.Path analysis indicated that sin-gle-tuber fresh weight and single-plant stem and leaf fresh weight had a larger direct effect on fresh tuber yield , but plant height and biomass had a smaller direct effect on it.Therefore, tuber length, tuber diameter, stem diameter, single-tuber fresh weight, harvest index, single-plant stem and leaf fresh weight, single-plant tuber fresh weight, and biomass were the main indexes that determined the yield of cassava in Jiangxi Province .关键词
木薯/北移区/产量特征/相关分析Key words
Cassava/North-planted district/Yield characteristics/Correlation analysis分类
农业科技引用本文复制引用
林洪鑫,刘仁根,袁展汽,肖运萍,汪瑞清,吕丰娟..北移区木薯品种产量特征的相关分析[J].江西农业学报,2016,28(12):1-7,7.基金项目
现代农业产业技术体系建设专项“国家木薯产业技术体系南昌综合试验站”（ CARS－12－jxyzq）；江西省农科院青年创新基金（2013CQN010）。 （）
