Nonparametric measures of stability analysis compared as per blup & blue of wheat genotypes for central zone of country

Stability for wheat genotypes had been compared in Central Zone of the country as per the BLUP and BLUE of yield values. Measures based on ranks of BLUP for 2015-16 i.e. S_i^s identified G1, G5, G7, G6. Corrected yield measures CS_i^s pointed towards G1, G2, G5, G6. Values of NP_i^(s) identified G1, G2, G7. Overall similarity among non-parametric measures tested by Kendall’s coefficient of concordance. Positive correlations of S_i^s, CS_i^s & NP_i^(s) observed with other measures. Biplot analysis exhibited cluster of CV with CCV, S_i¹, S_i², S_i⁴, S_i⁵, S_i⁷, S_i³, S_i⁶, NP_i⁽²⁾, NP_i⁽³⁾ & NP_i⁽⁴⁾. Based on BLUE’s of genotypes, S_i^s found G1, G7, G4, G5 while CS_i^s identified G5, G4, G2 as opposed to G7, G1, G4 genotypes as by values NP_i^(s). Positive and negative correlations exhibited by S_i^s, CS_i^s & NP_i^(s) with the measures. Biplot analysis observed large cluster comprised of Yield with GAI, NP_i⁽²⁾, NP_i⁽³⁾, NP_i⁽⁴⁾, S_i¹, S_i², S_i⁴S_i³, S_i⁵, S_i⁶ measures. Second year of study (2017-18) as per BLUP’s seen, S_i^s settled for G8, G7, G2 genotypes. While NP_i^(s) settled for G1, G2, G8, G5. Negative correlations of yield had been observed with MR, CV, Med, NP_i⁽²⁾, NP_i⁽³⁾, NP_i⁽⁴⁾ while positive with GAI, CMR, CS_i⁶. Measure CV expressed affinity with NP_i⁽²⁾, NP_i⁽³⁾ & NP_i⁽⁴⁾, SD, S_i³, S_i⁶, S_i¹, S_i², S_i⁴, S_i⁵, S_i⁷ in Biplot analysis.^. Measures S_i^s as per BLUE’s pointed towards G2, G5,G8, G7 whereas CS_i^s settled for sG6, G8, G7. Wheat genotypes G8, G2, G7, G5 favoured by least values of NP_i^(s). Positive correlation S_i , CS_i^s & NP_i^(s) with others. Large cluster of CCV, CSD, NP_i⁽¹⁾, S_i¹, S_i², S_i⁴, CS_i¹, CS_i², CS_i³, CS_i⁴, CS_i⁵, CS_i⁶, CS_i⁷ and Z1measures.

• Stability of wheat genotypes had been compared as per the BLUP and BLUE of yield values for Central Zone of the country.

• Kendall’s coefficient of concordance resulted an overall similarity among rank-based measures based on BLUP for first year. Positive correlations of rank-based measures based on BLUP viz. S_i^s, CS_i^s & NP_i^(s) with other measures.

• While both type of correlations observed among measures as per BLUE of genotypes.

• First two PCA’s based on BLUP’s account for more of G×E sum of squares as compared to corresponding components by BLUE.