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Table 7 Different temperature treatments applied to plants 24 h before flowering

From: Screening and optimisation of in vitro pollen germination medium for sweetpotato (Ipomoea batatas)

Treatment

Temperature (°C)

Germination rate (%)

Temp. 1

15

22.7 ± 3.9

Temp. 2

20

33.5 ± 1.6

Temp. 3

25

74.1 ± 4.3*

Temp. 4

30

75.8 ± 5.5*

Temp. 5

35

34.2 ± 6.5

Temp. 6

40

5.5 ± 3.2

Temp. 7

45

4.7 ± 2.2

  1. Germination rate is the mean ± SD of five replicates. * Indicates the first echelon of multiple comparison results. ANOVA on pollen germination showed that pollen germination rates differed significantly (P < 0.01) between the temperature treatments, with pollen from the 25 and 30 °C treatments showing significantly higher germination rates than the other treatments
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Plant Methods

ISSN: 1746-4811