Comparative Efficiency of Randomized Complete Block Design Versus Alpha Lattice Design in Wheat Breeding Experiments

Authors

  • Shubham Verma Department of Genetics and Plant Breeding, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, 176062
  • Harinder K. Chaudhary Department of Genetics and Plant Breeding, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, 176062
  • V.K. Sood Department of Genetics and Plant Breeding, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, 176062
  • Kritika Singh Department of Genetics and Plant Breeding, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, 176062
  • Kulveer Singh Dhillon Department of Genetics and Plant Breeding, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, 176062
  • Nimit Kumar Department of Genetics and Plant Breeding, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, 176062

Keywords:

Wheat, Alpha lattice design, RCBD, Breeding programs, Relative efficiency.

Abstract

Evaluating large number genotypes in complete block design is impractical due to the need for all treatment combinations in each block, which increases experiment size and reduces accuracy. To minimize errors and enhance the precision and effectiveness of breeding programs, a high-quality experimental design is essential. To address this limitation, the current experiment was conducted to evaluate the suitability of alpha lattice design (ALD) compared to randomized complete block design (RCBD) in plant breeding trials. In this study, three hundred six wheat genotypes were sown in ALD of 17×18, consisting of 17 blocks with 18 genotypes each, replicated in triplicates under both irrigated and rainfed conditions. The study estimated two traits: the number of grains per spike and grain yield per plant, using data from both environments. These traits were then analyzed using both RCBD and ALD to evaluate the efficiency of ALD in comparison to RCBD. The relative efficiency based on grain yield per plant under both trials indicates that ALD was more efficient than RCBD. A relative efficiency close to one for the number of grains per spike could be attributed to the large number of entries evaluated in the RCBD. The anomalies regarding low EMS in the RCBD trial instead of the ALD could potentially be explained by this factor. Therefore, in field experiments with many entries, ALD should be preferred over RCBD.

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Published

2024-06-30

How to Cite

Verma, S., Chaudhary, H. K., Sood, V., Singh, K., Dhillon, K. S., & Kumar, N. (2024). Comparative Efficiency of Randomized Complete Block Design Versus Alpha Lattice Design in Wheat Breeding Experiments. Himachal Journal of Agricultural Research, 50(1), 24–28. Retrieved from https://hjar.org/index.php/hjar/article/view/172541

Issue

Volume 50, Issue 1, June 2024

Section

Full Length Papers

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