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It provides analysis\nof variance for the randomised block design (RBD) and factorial\nRBD, a check-anchored intra-block analysis for augmented\nalpha-lattice designs, and the core biometrical-genetics\nworkflow used in crop improvement: estimation of genetic\nvariability (genotypic and phenotypic coefficients of\nvariation, broad-sense heritability, expected genetic advance),\ngenotypic and phenotypic correlation, path-coefficient\nanalysis, line x tester and Griffing diallel combining-ability\nanalysis (general combining ability and specific combining\nability), Mahalanobis D-square genetic-divergence analysis with\nTocher and hierarchical clustering, and genotype-by-environment\nstability analysis (Eberhart-Russell regression and the\nadditive main effects and multiplicative interaction (AMMI)\nmodel). Methods follow Griffing (1956) \nand Eberhart and Russell (1966)\n. 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