Photodynamic Herbicides - Chlorophyll Biosynthesis and Technological Applications - page 388

Table 17.7 Tetrapyrrole accumulation and ALA content of unwashed morningglory leaf sections
of various ages following ALA treatment (2lbs ALA per acre)
ALA content and tetrapyrrole accumulation after 15 h dark-incubation

10-day old 15-day old 20-day old

C T C T C T

Tetrapyrrole
or % injury nmoles per g fresh weight

ALA 0.4 0.2 2.3 0.4 0.1 0.0 1.8 0.2 0.1 0.1 2.0 0.6

Mp(e) 0.0 0.0 12.9 13.3 0.0 0.0 2.7 3.4 0.0 0.0 0.9 0.9

Pchlide a 2.2 1.0 23.1 11.4 0.8 0.3 8.7 4.8 1.2 1.0 3.3 1.1

% Injury 0 0 0.0 100.0 0.0 0.0 0.0 89.7 15.2 0.0 0. 0 64.1 17.6

LSD (0.05)
age

ALA ¼ 0.3

Mp(e) ¼ 3.4

Pchlide a ¼ 3.6

Injury ¼ 0.8

LSD (0.05)
treatment

ALA ¼ 0.2

Mp(e) ¼ 2.8

Pchlide a ¼ 3.0

0. 5
Values are means of six replicates. Photoperiodic damage was assessed 10 days after treatment
(Reproduced from Kulur 1996 )

Injury ¼

Unwashed Leaf Sections

50 200

45

TMp(e) CPide TPide

CMp(e)

CALA TALA

40

158

= LSDA ALA
= LSDA Mp(e)
= LSDA Pide
= LSDA Inj

35

CInj

TInj

30

= LSDT ALA
= LSDT Mp(e)
= LSDT Pide
= LSDT Inj

116

25

20

74

15

10

32

5

0

-5 10

10 15 20 25

Plant Age (Days)

Fig. 17.5 ALA content, tetrapyrrole accumulation and photodynamic injury in unwashed
morningglory leaf sections of different ages. The data was adapted from Table 17.5 . All
abbreviations are as in Fig. 17.4 (Reproduced from Kulur 1996 )