Makumbi Dan, Alvarado Gregorio, Crossa José, Burgueño Juan
International Maize and Wheat Improvement Center (CIMMYT), PO Box 1041-00621, Nairobi, Kenya.
Biometrics and Statistics Unit, International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600, Mexico DF, Mexico.
Crop Sci. 2018 Jul-Aug;58(4):1605-1615. doi: 10.2135/cropsci2018.01.0047. Epub 2018 Jun 14.
Different methods of diallel crossing are commonly used in plant breeding. The diallel cross analysis method proposed by Hayman is particularly useful because it provides information, among others, on additive and dominance effects of genes, average degree of dominance, proportion of dominance, direction of dominance, distribution of genes, maternal and reciprocal effects, number of groups of genes that control a trait and exhibit dominance, ratio of dominant to recessive alleles in all the parents, and broad-sense and narrow-sense heritability. In this paper, we fully describe a SAS-based software SASHAYDIALL for performing a complete diallel cross analysis based on Hayman's model with or without reciprocals. We demonstrate the use of SASHAYDIALL with two data sets; one is a published diallel cross data set with reciprocals in cabbage ( L.), and the second is a data set from a multilocation diallel cross trial in maize ( L.) without reciprocals. With SASHAYDIALL, diallel experiments conducted in single sites can be analyzed to estimate various genetic parameters, and this analysis is extended over locations or environments to assess genetic effect × environment interaction. SASHAYDIALL is user-friendly software that provides detailed genetic information from diallel crosses involving any number of parents and locations.
双列杂交的不同方法常用于植物育种。海曼提出的双列杂交分析方法特别有用，因为它尤其能提供关于基因的加性和显性效应、平均显性程度、显性比例、显性方向、基因分布、母体效应和正反交效应、控制某一性状并表现出显性的基因组数、所有亲本中显性等位基因与隐性等位基因的比例，以及广义和狭义遗传力等信息。在本文中，我们全面描述了一个基于SAS的软件SASHAYDIALL，用于基于海曼模型进行有或无正反交的完整双列杂交分析。我们用两个数据集演示了SASHAYDIALL的使用；一个是已发表的甘蓝（L.）有正反交的双列杂交数据集，另一个是玉米（L.）无正反交的多地点双列杂交试验数据集。使用SASHAYDIALL，可以分析单地点进行的双列杂交实验以估计各种遗传参数，并且这种分析可以扩展到不同地点或环境，以评估遗传效应×环境互作。SASHAYDIALL是一款用户友好型软件，能从涉及任意数量亲本和地点的双列杂交中提供详细的遗传信息。
