Chemistry Reference
In-Depth Information
TABLE 1
Germinating capacity of seeds of winter grain crops and millet species under
different ways of treatments of cereal inflorescences by PABA.
Variant of experiment
Winter
wheat
Winter
barley
Japanese millet
Panic
Italian
millet
%
+/%
%
+/%
%
+/%
%
+/%
%
+/%
0. Control I without
treatment: soaking in
water for 3-4 hr
62
0
75
0
67
0
72
0
68
0
1. Control II: soaking
in PABA (0.1-0.2%)
dissolved in hot water
for 2-2.5 hr
74
12/16
84
9/11
76
9/12
82
10/1.2
72
4/6
2. Soaking in PABA
(0.1%) dissolved in an
ac. a. for 2-2.5 hr
82
20/24
93
18/19
87
20/23
92
20/22
84
16/19
3. Soaking in PABA
(0.2%) dissolved in an
ac. a. for 2-2.5 hr
86
24/28
95
20/21
92
25/27
92
20/22
87
19/24
4. Soaking in PABA
(0.2%) dissolved in an
ac. a. for 3-4 hr
96
34/35
98
23/23
95
28/29
95
23/23
92
24/25
5. Soaking in PABA
(0,2%) dissolved in an
ac. a. for 5-6 hr
82
20/24
86
11/13
90
23/26
90
18/20
86
18/21
LSD
05
4.5
2.4
2.8
2.1
2.2
4.5
Note. LSD - the least substantial difference; ac. a. = an acetic acid
The middle percent of wintering as compared to control of I (water without PABA)
increases with the increase of concentration of PABA and durations of treatment.
However, at more long continued soakage of plants during 5-6 hr (variant 5) increase
in relation to both controls was less, than at a soakage during 3-4 hr (variant 4). At a
soakage in water solution of PABA of 0.1% increase observed also, but on more low
level, then at dissolution in an acetic acid.
The energy of germination, presented to the Table 2, exceeded control without
treatment of PABA in all variants of dissolution of PABA dissolved in an acetic acid
and in a variant with treatment of PABA, dissolved in hot water (control of II, variant
1), and was higher, than in control without addition of PABA (zero variant) at all ¿ ve
investigated cultures. Exceeding of indexes above control of I in control of II was
below, than in variants 1-5.
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