Poster presentation
296
PRODUCTIVITY OF Ajuga turkestanica SEEDS
A. Egamberdiev
1
, B. Nigmatullaev
1
, A. Nigmatullaev
1
1) S.Yu. Yunusov Institute of the Chemistry of Plant Substances Academy of sciences of
the Republic of Uzbekistan st. Mirzo-Ulugbek, 77, 100170 Tashkent
e-mail: akmal-egamberdiyev-76@mail.ru,
phone: +998998588835
Determination of seed productivity of
Ajuga turkestanica
(Regel) Brig was carried
out in Kashkadarya and Surkhandarya regions during 2019-2022. vegetative and
generative branches of
Ajuga turkestanica
(Regel) Brig. were formed up to 65 in each
bush. Each plant produced up to 60 flowers.
Due to very warm weather in 2019, flowering of plants started much earlier (15.04).
In 2020, the flowering period was observed later (18.05) due to good weather and
prolonged rainfall. 2021, when the phenology of
Ajuga turkestanica
(Regel) Brig. was
observed in an experimental field in Boysun District, the plant began to flower on April
29. The period of fruiting lasted longer than flowering, depending on weather
conditions. We studied fruit set based on the beginning of the flowering process, total
flowering, completion and location of the flowers on the stem (bottom, middle and top).
The highest number of opened flowers and set fruits was observed during the beginning
of flowering and the period of total flowering. At the beginning of the flowering period,
an average of 7.2 flowers were formed on one stem per plant. During the total flowering
period, it was 7.9 flowers, and at the end of flowering, this indicator was 6.3 flowers. In
the experimental field of Boysun district, it was observed that the plant had a high seed
production rate for three years. But, due to the change of weather, some of the buds did
not have time to form and produce fruit. At the end of flowering, the buds and flowers
formed are relatively small, and only 50-55% of the fruit's seeds are fully ripe.
In conclusion, the seed productivity of plants in nature also varies depending on
weather conditions. The formation of seed rate was 85.6% on average for 3 years. The
main reasons for this are that some flowers are not pollinated and some of them fall due
to the influence of the external environment (15%). The table shows the results of three
years of experiments, 1 bush of
Ajuga turkestanica
(Regel) Brig. averaged 72.7±5.9
buds, 62.6±2.95 flowers, 51.2±2.36 fruits, and produced 248 seeds. The weight of 1000
pieces of
Ajuga turkestanica
(Regel) Brig. seeds was 20.20 grams. So, one bush of
Turkestan ajuga seed yield is equal to 5.06 grams.
Ajuga turkestanica
(Regel) Brig. in
the experimental field of Boysun district had high productivity at the beginning of
flowering and total flowering periods, and the rate of seed setting was 67.6%.
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