Gonçalves Ceolin Ana Cristina, Gonçalves-Vidigal Maria Celeste, Soares Vidigal Filho Pedro, Vinícius Kvitschal Marcus, Gonela Adriana, Alberto Scapim Carlos
Departamento de Agronomia, Universidade Estadual de Maringá, Maringá-Paraná, Brazil.
Hereditas. 2007 Mar;144(1):1-9. doi: 10.1111/j.2006.0018-0661.01943.x.
The objective of this study was to evaluate the genetic divergence among the common bean group Carioca by the Tocher method (based on Mahalanobis distance) and graphic dispersion of canonic variables, aiming to identify populations with wide genetic variability. Eighteen genotypes were evaluated in four seasons using a randomized block design with four replications. The mean weight of 100 seeds, in three experiments, and the mean number of pods per plant, in one experiment, were the most important characteristics for the genetic divergence, representing more than 46% of the total variation in the first canonic variable. The first two canonic variables were sufficient to explain about 88.23% of the total variation observed in the average of the four environments. The results showed that CNFC 8008 and CNFC 8009 genotypes presented the best yield averages in all the experiments. While Pérola, Princesa and CNFC 8005 cultivars were the most dissimilar for morpho-agronomic traits. Therefore, the combinations of PérolaxCNFC 8008, CNFC 8005xCNFC 8009, PérolaxCNFC 8009, PrincesaxCNFC 8008 and PrincesaxCNFC 8009 were indicated for interpopulational breeding.
本研究的目的是通过托赫尔方法（基于马氏距离）和典型变量的图形散点图评估菜豆组卡里奥卡的遗传差异，旨在识别具有广泛遗传变异性的群体。采用随机区组设计，四次重复，在四个季节对18个基因型进行了评估。在三个试验中，100粒种子的平均重量以及在一个试验中每株植物的平均荚数是遗传差异的最重要特征，在第一个典型变量中占总变异的46%以上。前两个典型变量足以解释在四个环境平均值中观察到的总变异的约88.23%。结果表明，CNFC 8008和CNFC 8009基因型在所有试验中均表现出最佳的产量平均值。而佩罗拉、公主和CNFC 8005品种在形态农艺性状上差异最大。因此，佩罗拉×CNFC 8008、CNFC 8005×CNFC 8009、佩罗拉×CNFC 8009、公主×CNFC 8008和公主×CNFC 8009组合适用于群体间育种。
