Table 6 Results of principal component analysis based on yield under normal and heat stress conditions and heat tolerance indices. The first two principal components together accounted for 97.8% of the observed variation. PC1 first principal component, PC2 second principal component, Yp yield under normal conditions, Ys yield under stress conditions, TOL tolerance index, STI stress tolerance index, SSPI stress susceptibility percentage index, YI yield index, YSI yield stability index, RSI relative stress index, MP mean productivity, GMP geometric mean productivity, HM harmonic mean, MRP mean relative performance, PYR percent yield reduction.

From: Identification of heat tolerant lentil genotypes through stress tolerance indices

Components

PC1

PC2

Eigen value

7.58

5.13

Variance %

58.3

39.5

Cumulative

58.3

97.8

Yp

0.28

0.95

TOL

-0.02

0.99

STI

0.90

0.35

Ys

0.99

-0.10

SSPI

-0.02

0.99

YI

0.99

-0.10

YSI

0.75

-0.63

RSI

0.75

-0.63

MP

0.54

0.83

GMP

0.93

0.31

HM

0.99

0.007

MRP

0.93

0.35

PYR

-0.75

0.63