Table 5 Principal component analysis, co-heritability and correlation coefficient estimation of maize inbred lines for thirty-eight traits under WDS condition.

From: Impact of water deficit stress in maize: Phenology and yield components

Traits	NDT				DT
Traits	PCA-1 (TV = 26.89)	PCA-2 (TV = 20.55)	Co-h²	R²	PCA-1 (TV = 56.56)	PCA-2 (TV = 43.46)	Co-h²	R²
DA	0.26	0.15	0.96	0.53	0.20	−0.09	0.97	−0.13
DS	0.27	0.08	0.97	0.43	0.21	−0.08	0.93	−0.02
ASI	0.19	−0.06	0.93	0.02	−0.01	0.25	0.98	0.4
DDH	0.26	0.06	0.95	0.33	0.19	−0.12	0.97	−0.76
PH	0.22	0.10	0.99	0.93	0.16	0.17	0.99	0.55
NL	0.28	−0.10	0.93	0.22	0.01	−0.25	0.98	0.48
SU	0.02	−0.13	0.91	0.61	−0.16	−0.17	0.99	−0.43
SL	0.04	0.18	0.99	0.69	−0.09	−0.23	0.96	−0.79
LA-3	−0.12	0.21	0.94	0.60	−0.18	−0.15	0.93	−0.59
LA-C	−0.21	0.04	0.97	0.26	−0.02	−0.25	0.82	−0.98
INL 3–4	−0.06	0.09	0.97	−0.02	−0.06	0.24	0.99	0.99
FLL	−0.02	−0.13	0.93	−0.87	−0.21	0.08	0.98	0.60
FLW	−0.16	−0.26	0.96	−0.35	0.22	0.03	0.94	0.99
EH	0.27	0.02	0.92	0.17	0.13	−0.20	0.98	0.01
EL	0.09	0.20	0.99	0.49	0.22	0.01	0.97	0.56
EW	0.11	0.25	0.90	0.01	0.18	−0.15	0.95	−0.01
H/ C	−0.08	0.19	0.92	0.38	−0.14	−0.19	0.98	−0.89
C/ P	−0.06	0.07	0.98	−0.17	0.10	0.22	0.98	0.82
KR	0.09	0.14	0.91	0.21	0.21	−0.07	0.95	0.07
KR/C	0.20	0.21	0.97	0.68	0.15	−0.18	0.96	−0.59
SW	−0.12	0.17	0.94	0.25	0.19	−0.11	0.90	−0.69
KISTI	0.05	0.28	0.99	0.85	0.12	0.21	0.96	0.98
YI	0.04	0.31	0.95	0.74	0.14	0.19	0.99	0.99
RLWC	0.05	0.16	0.94	0.01	0.19	0.12	0.97	0.99
SG	0.03	0.17	0.90	0.67	0.12	0.21	0.99	0.96
LS	−0.06	−0.07	0.92	0.04	−0.20	−0.11	0.99	0.99
LR	0.05	−0.28	0.99	0.01	−0.17	−0.15	0.97	0.76
LF	−0.21	0.14	0.93	0.10	−0.09	0.23	0.97	−0.44
PS%	0.29	0.03	0.94	−0.27	0.22	−0.03	0.98	−0.64
TB	−0.21	−0.08	0.95	0.05	0.16	−0.17	0.99	−0.67
BP	−0.06	−0.13	0.98	−0.27	−0.19	−0.12	0.99	−0.64
NBR	0.09	−0.08	0.92	−0.06	0.10	−0.22	0.98	0.01
RFW	0.19	−0.21	0.93	0.01	0.20	−0.09	0.99	0.04
RDW	0.20	−0.20	0.98	0.02	0.20	−0.09	0.92	0.01
RL	0.09	−0.03	0.09	0.31	0.21	−0.07	0.93	0.01
RV	0.18	−0.21	0.92	−0.13	0.10	0.22	0.90	−0.98
RN	0.24	−0.17	0.89	0.08	0.22	−0.03	0.91	−0.31

PCA: Principal component analysis; Co-h²: Co-heritability; r²: regression coefficient; TV = total variance explained; DA: Days to 50% tasseling; DS: Days to 50% silking; ASI: Anthesis silk interval; DDH: Days to 75% dry husk; PH: Plant height; NL: Number of leaves per plant; SU: Number of stomata on upper surface of leaf; SL: Number of stomata on lower surface of leaf; LA-3: 3^rd leaf angle from top; LA-C: Leaf angle at ear forming node; INL3–4: Internodal length between 3^rd and 4^th leaf from top; FLL: Flag leaf length; FLW: Flag leaf width; EH: Ear height; EL: Ear length; EW: Ear width; H/C: Number of husk per ear; C/P: Number of ear per plant; K/R: Number of kernels per rows; KR/C: Number of kernel rows per ear; SW: 1000 seed weight; GY/ha: Grain yield per hectare; KiSTI: Modified stress tolerance index; YI: Yield index; RLWC: Relative leaf water content; SG: Stay green; LS: Leaf senescence; LR: Leaf rolling; LF: Leaf firing; PS%: Pollen stainability; TB: Tassel blast and BP: Bareness percentage; NBR: Number of brace root per plant; RFW: Root fresh weight; RDW: Root dry weight; RL: Root length; RV: Root volume; RN: Number of roots >10 cm.

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Table 5 Principal component analysis, co-heritability and correlation coefficient estimation of maize inbred lines for thirty-eight traits under WDS condition.

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