Table 1 Spectral parameters of the three light treatments tested and abbreviated names of trays from each light treatment switching places with trays from the other two light treatments for days 4–6 after grafting.

From: Blue light promotes vascular reconnection, while red light boosts the physiological response and quality of grafted watermelon seedlings

Parameters

Light treatment

Light treatment at 6 days after grafting

R

B

12B

Abbreviation

Days 1–3

Days 4–6

UV %; 380–399 nm

0.08

0.09

0.05

R-R

R

R

Blue %; 400–499 nm

0.24

98.87

11.94

R-B

R

B

Green %; 500–599 nm

0.51

0.28

0.53

R-12B

R

12B

Red %; 600–699 nm

98.47

0.34

86.83

B-R

B

R

Far-red %; 700–780 nm

0.69

0.42

0.64

B-B

B

B

Blue peak wavelength (nm)

451

454

B-12B

B

12B

Red peak wavelength (nm)

661

660

12B-R

12B

R

R:B

7.27

12B-B

12B

B

PPS

0.89

0.51

0.89

12B-12B

12B

12B