Skip to main content

Table 2 The net photosynthesis rate (Pn) of uppermost or flag leaves with a portable photosynthesis system LI-6400XT, the photosynthetic photon flux density (PPFD) were 1000 μmol m− 2 s− 1 at different growth stages for cv. YLY1 and LYP9. The p values are probability of two-tail t-test. n = 10, Pn (μmol m− 2 s− 1) (mean ± SD). TS means tillering stage, PDS means panicle differentiation stage, HFS means heading and flowering stage, MS means milk stage of grain filling, DS means dough stage of grain filling

From: Architectural and Physiological Features to Gain High Yield in an Elite Rice Line YLY1

Year

 

TS

PDS

HFS

MS

DS

2011

YLY1

/

/

23.84 ± 1.16

20.00 ± 1.07

14.77 ± 2.05

LYP9

/

/

20.98 ± 1.06

20.09 ± 1.40

14.98 ± 2.09

Difference

/

/

13.63%

−0.45%

−1.40%

p

/

/

< 0.01

0.819

0.757

2012

YLY1

23.24 ± 0.59

25.58 ± 1.36

20.22 ± 0.15

20.10 ± 1.21

15.75 ± 1.11

LYP9

24.05 ± 0.48

21.31 ± 1.47

18.16 ± 1.66

17.27 ± 0.03

14.27 ± 1.16

Difference

−3.37%

20.04%

11.34%

16.39%

10.37%

 

p

< 0.01

< 0.01

< 0.01

< 0.01

< 0.01

2013

YLY1

26.70 ± 0.53

25.08 ± 0.19

23.88 ± 0.25

21.39 ± 0.19

16.95 ± 0.24

LYP9

25.00 ± 0.49

22.61 ± 0.33

23.79 ± 0.26

20.15 ± 0.18

16.49 ± 0.30

Difference

6.80%

10.90%

0.41%

6.13%

2.81%

 

p

< 0.01

< 0.01

0.7967

< 0.01

0.2472

2014

YLY1

28.43 ± 0.51

26.98 ± 0.35

25.04 ± 0.73

21.51 ± 0.37

17.71 ± 0.87

LYP9

27.75 ± 0.38

25.32 ± 0.65

24.77 ± 0.81

20.36 ± 0.55

15.98 ± 0.47

Difference

2.43%

6.56%

1.09%

5.65%

10.84%

 

p

< 0.05

< 0.01

0.6608

< 0.05

< 0.05