Table 4 Variance analysis of the investigated parameters in the first growing season (2021).

From: Monitoring plant responses in field-grown peanuts exposed to exogenously applied chitosan under full and limited irrigation levels

Source of variation

df

CHL

RWC

PROL

CAR

Y

Cu L

Cu R

Ca L

Irrigation levels (IR)

1

*

*

*

*

NS

*

*

*

Chitosan (CH)

1

*

*

*

*

*

*

*

*

IR × CH

1

NS

NS

*

*

*

*

NS

*

p-value

  

0.001

0.002

 < 0.001

 < 0.001

0.946

0.001

 < 0.001

0.009

  

0.026

0.029

 < 0.001

 < 0.001

 < 0.001

0.003

 < 0.001

 < 0.001

  

0.829

0.078

 < 0.001

0.049

0.005

0.045

0.380

 < 0.001

 

Df

IWUE

NL

NR

PL

PR

KL

KR

Ca R

Irrigation levels (IR)

1

*

*

*

*

*

*

*

*

Chitosan (CH)

1

*

*

*

*

*

*

*

*

IR × CH

1

*

NS

*

*

*

*

*

*

p-value

  

 < 0.001

0.004

0.002

 < 0.001

0.004

0.005

0.008

0.049

  

 < 0.001

 < 0.001

 < 0.001

 < 0.001

0.002

 < 0.001

 < 0.001

 < 0.001

  

0.002

0.108

0.026

0.006

0.033

0.003

0.006

 < 0.001

 

df

Na L

Na R

Mg L

Mg R

Fe L

Fe R

Mn L

Mn R

Irrigation levels (IR)

1

*

*

*

*

*

*

*

*

Chitosan (CH)

1

*

*

*

*

*

*

*

*

IR × CH

1

*

NS

*

*

NS

*

*

NS

p-value

  

 < 0.001

0.001

 < 0.001

 < 0.001

0.001

 < 0.001

0.008

0.003

  

 < 0.001

 < 0.001

 < 0.001

 < 0.001

0.003

 < 0.001

0.001

 < 0.001

  

 < 0.001

0.097

 < 0.001

 < 0.001

0.074

0.002

0.024

0.051

 

df

Zn L

Zn R

      

Irrigation levels (IR)

1

*

*

      

Chitosan (CH)

1

*

*

      

IR × CH

1

*

*

      

p-value

  

0.004

0.019

      
  

 < 0.001

 < 0.001

      
  

0.004

0.001

      
  1. CHL total chlorophyll, RWC relative water content, PROL proline, CAR carbohydrates, NL nitrogen in leaves, NR nitrogen in roots, PL phosphorus in leaves, PR phosphorus in roots, Ca L calcium in leaves, KL potassium contents in leaves, KR potassium contents in roots, Na L sodium in leaves, Na R sodium in roots, Ca L calcium in leaves, Ca R calcium in roots, Y peanuts yield, IWUE irrigation water use efficiency, Fe R iron in roots, Fe L iron in leaves, Mn L manganese in leaves, Mn R manganese in roots, Zn L zinc in leaves, Zn R zinc in roots, Cu L copper contents in leaves, Cu R copper contents in roots, NS non-significance.
  2. *Significance at P ≤ 0.05.
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