Character Association Studies in Groundnut (<i>Arachis hypogaea</i>L.)
Character Association Studies in Groundnut (<i>Arachis hypogaea</i>L.)作者机构：Department of Biological Sciences Plant Science Unit University of Agriculture Makurdi Nigeria Department of Plant Breeding and Seed Science University of Agriculture Makurdi Nigeria Department of Crop & Env. Protection University of Agriculture Makurdi Nigeria
出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)
年 卷 期：2018年第9卷第7期
页 面：1531-1543页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Groundnut Qualitative Characters Quantitative Relationship Breeding Systematics
摘 要：The aim of this study was to evaluate the degree of relationship and association amongst morphological characters of groundnut as an important food crop in Nigeria. 118 cultivars were planted in a completely randomized design structure. Characterization was based on qualitative and quantitative evaluations of 62 characters. Data were analysed on the SPSS software (20.0 versions). Correlation tools were applied using Spearman, Kendall and Pearson methods. Level of relationship was determined based on the strength of coefficients R. Dependence among traits was tested using the Chi square. Multiple regression analysis was carried out in a predictive model. As a result, many of the traits are very weakly correlated. Day to emergence has no effect on Day to 50% flowering (R = 0.237, p 0.6, p 0.9) were observed amongst pod and seed parameters. Pod sizes significantly affect the number of seeds present (R = 0.551, p 2 of 30%. Qualitative traits have no effect on each other as all coefficients are very low. Pod constriction and sizes have no relationship (R = -0.029). Tolerance to diseases is not affected by any qualitative trait. Also, no trait determines seed colour. Pubescence of young and mature leaflets recorded the only high positive correlation among all qualitative traits (R = 0.837, p = 0.01). However, leaf and stem pubescence ha
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