Table 4 Changes in photosynthetic pigment content of nettle under drought stress.

From: Responses of the physiological characteristics and endophytic bacteria of Urtica cannabina to simulated drought stress

Item

Treatment

Simulation of drought stress days

SEM

P value

0

1

4

8

Day

Treatment

D*T

Chl(a)

(mg/g)

CK

1.976Aa

1.969 A

1.968Aa

1.956Aa

0.01

0.056

p<0.01

p<0.01

TL

1.973 A

2.043 A

1.381Bb

1.126Bb

TH

1.966 A

2.062 A

1.233Bc

0.575Cc

Ch1(b)

(mg/g)

CK

1.385

1.381

1.379 A

1.375 A

0.14

p<0.01

p<0.01

p<0.01

TL

1.381a

1.390a

1.078ABab

0.930Bb

TH

1.373a

1.422a

0.909Bb

0.471Cc

Ch1(a + b)

(mg/g)

CK

3.361

3.35

3.35 A

3.33 A

0.13

p<0.01

p<0.01

p<0.01

TL

3.354a

3.43a

2.46Bb

2.06Bc

TH

3.339a

3.48a

2.16Bb

1.05Cc

Ch1(a/b)

(mg/g)

CK

1.427

1.426

1.427 A

1.423 A

0.02

0.032

p<0.01

p<0.01

TL

1.428a

1.469a

1.281Bb

1.211Bc

TH

1.432a

1.451a

1.328Bb

1.222Bc

  1. Note: Ch1: chlorophyll, Different capital letters indicate significant differences among different treatments at the same stress time (p < 0.05), different small letters indicate significant differences at different times under the same treatment (p < 0.05), and the same letter or no letter indicates no significant difference between groups (p > 0.05).
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