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Table 4 Effect of soaking two sugar beet seed cultivars with tryptophan and irrigated with different salinity levels on root parameters at harvest (180 days after sowing)

From: The physiological effect of pre-soaking with tryptophan on sugar beet (Beta vulgaris L.) productivity under different levels of salinity stresses

Treatments

Root parameters at harvest

Salinity (ppm)

Try. (mM)

Length (cm)

Diameter (cm)

Fresh wt. (g)

DS-9004

LP-15

DS-9004

LP-15

DS-9004

LP-15

320

0.0

24.00

21.50

16.00

15.00

145.00

174.00

2.5

26.00

24.00

20.00

20.00

207.00

208.00

5.0

25.00

20.00

19.00

18.00

181.00

193.00

2000

0.0

22.00

18.50

15.00

14.00

107.00

145.00

2.5

25.00

22.00

18.00

18.00

185.00

187.00

5.0

24.00

20.00

17.00

16.00

163.00

175.00

4000

0.0

20.00

18.00

15.00

12.00

126.00

124.00

2.5

26.00

20.00

19.00

17.00

183.00

172.00

5.0

23.00

19.00

16.00

15.00

156.00

159.00

6000

0.0

19.00

18.00

13.00

12.00

95.00

120.00

2.5

24.00

19.00

16.00

16.00

151.00

165.00

5.0

21.00

18.00

14.00

14.00

141.00

147.00

8000

0.0

15.00

14.00

10.00

10.00

113.00

105.00

2.5

22.00

16.00

12.00

14.00

144.00

135.00

5.0

18.50

15.00

11.00

12.00

136.00

133.00

LSD5%

1.77

0.15

5.79

Mean of main effects

      

Variety

DS-9004

22.30

15.40

148.87

LP-15

18.87

14.87

156.13

F sig.

a

a

a

Salinity (ppm)

320.0

23.42

18.00

184.67

2000.0

21.92

16.33

160.33

4000.0

21.00

15.67

153.33

6000.0

19.83

14.17

136.50

8000.0

16.75

11.50

127.67

LSD5%

1.29

0.11

4.23

Try.(mM)

0.0

15.83

11.00

104.50

2.5

18.67

14.17

144.75

5.0

16.96

12.67

132.00

LSD5%

0.97

0.08

3.17

  1. ns non significant
  2. aSignificant