Table 5 Genotypic (above the diagonal) and phenotypic (below the diagonal) correlations between the traits grain yield (YLD, kg.ha−1), plant height (PHT, cm) and days to flowering (DTF, days), by cycle and over the whole period.

From: Population improvement via recurrent selection drives genetic gain in upland rice breeding

Cycle

TRAIT

FLW

PHT

YLD

3

FLW

1

0.04

−0.05

PHT

−0.07

1

0.10

YLD

−0.19 **

0.55 **

1

4

FLW

1

0.13

−0.22 *

PHT

−0.80 **

1

−0.10

YLD

−0.89 **

0.86 **

1

5

FLW

1

−0.03

−0.13

PHT

−0.50 **

1

0.31 **

YLD

−0.07

0.21 **

1

6

FLW

1

−0.05

−0.26 *

PHT

0.37 **

1

0.16

YLD

0.01

0.62 **

1

7

FLW

1

0.04

0.12

PHT

0.14 **

1

0.13

YLD

0.21 **

0.80 **

1

All Cycles

FLW

1

−0.57 **

−0.20 **

PHT

−0.40 **

1

0.30 **

YLD

−0.22 **

0.51 **

1