unif_1: Seedling Uniformity Index
In SeedCalc: Seed Germination and Seedling Growth Indexes

Description Usage Arguments References Examples

It calculates the Seedling Uniformity Index (Sako, 2001).

1	unif_1(lengths)

lengths

A data.frame object containing seedling lengths data with four columns. The first and second columns are for identification, e.g. treatments and repetitions. The third is the shoot length and the fourth is the root lenght.

SAKO, Y.; MCDONALD, M. B.; FUJIMURA, K.; EVANS, A. F.; BENNETT, M. A. A system for automated seed vigour assessment. Seed Science and Technology, v. 29, n. 3, p. 625-636, 2001.

Seedling <- data.frame(
LOTE = c(1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2),
REP = c(1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2),
SH = c(0.00, 2.77, 1.18, 1.07, 0.80, 2.65, 3.51, 0.64, 2.77, 1.18, 1.07, 0.80, 2.65, 3.51, 1.98),
ROOT = c(4.86, 6.71, 7.88, 3.68, 9.68, 8.88, 9.85, 4.86, 6.71, 7.88, 3.68, 9.68, 8.88, 9.85, 8.75)
)
print(Seedling)
Unif <- unif_1(Seedling)
Unif