ltcchk: Analysis of Line x Tester data containing crosses and checks...

Description Usage Arguments Details Value Note Author(s) References See Also Examples

Description

Analysis of Line x Tester data containing crosses and checks laid out in RCBD or Alpha Lattice experimental design.

Usage

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ltcchk(data, replication, line, tester, check, y, block)

Arguments

data

dataframe containing following variables

replication

replication variable

line

line variable

tester

tester variable

check

check variable

y

trait of interest

block

block variable (for alpha lattice design only)

Details

Analyzing the line by tester data only using the data from crosses which are evaluated in alpha lattice design. All the factors are considered as fixed.

Analyzing the line by tester data only using the data from crosses which are evaluated in alpha lattice design. All the factors are considered as fixed.

Value

Overall ANOVA

ANOVA with all the factors.

Coefficient of Variation

ANOVA with all the factors.

Genetic Variance

Phenotypic and Genotypic variance for the given trait.

Genetic Variability

Phenotypic coefficient of variability and Genotypic coefficient of variability and Environmental coefficient of Variation.

Proportional Contribution

Propotional contribution of Lines, Tester and Line x Tester interaction.

GCA lines

Combining ability effects of lines.

GCA testers

Combining ability effects of testers.

SCA crosses

Combining ability effects of crosses

Line x Tester ANOVA

ANOVA with all the factors.

GV Singh & Chaudhary

Genetic component of Variance as per Singh and Chaudhary, 1977.

Standard Errors

Standard error for combining ability effects.

Critical Difference

Critical Difference at 5 percent for combining ability effects.

Note

The block variable is inserted at the last if the experimental design is Alpha Lattice. For RCBD no need to have block factor.

Author(s)

Nandan Patil

Nandan Patil tryanother609@gmail.com

References

Kempthorne, O. (1957), Introduction to Genetic Statistics. John Wiley and Sons, New York. , 468-472. Singh, R. K. and Chaudhary, B. D. (1977). Biometrical Methods in Quantitative Genetic Analysis. Kalyani Publishers, New Delhi.

See Also

ltc, dm2, ltcmt

Examples

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## Not run: #Line x Tester analysis with crosses and checks in RCBD
library(gpbStat)
data(rcbdltcchk)
results = ltcchk(rcbdltcchk, replication, line, tester, check, yield)
results

#Line X Tester analysis with crosses and checks in Alpha Lattice
library(gpbStat)
data(alphaltcchk)
results1 = ltcchk(alphaltcchk, replication, line, tester, check, yield, block)
results1
## End(Not run)

gpbStat documentation built on Oct. 30, 2021, 5:07 p.m.