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VOL. 9, ISSUE 1 (2024)
Effect of different seed treatments on breaking the dormancy of rice seeds (Oryza sativa L.) variety At 307
Authors
SF Faseeha, S Anula, T Geretharan, S Srikrishnah
Abstract
Rice (Oryza sativa L.) is one of the most popular field crops
among other cereals worldwide. It occupies approximately 34 percent (0.77
million ha) of Sri Lanka’s total cultivated area. Despite the growing demand
for rice, yields have been low. Prolonged dormancy is one of the reason for
lower paddy yield in Sri Lanka. Due to prolonged seed dormancy, seeds do not
germinate and farmers face problems. The study investigated the effect of
different seed dormancy breaking techniques on rice variety At 307. This
experiment was carried out in the Eastern University Sri Lanka crop science
laboratory from August to November 2023. The Petri dish experiment was laid out
in a completely randomized design with six treatments and five replications.
The treatments are T1 (2% of Urea), T2 (2% of MOP), T3 (Oven drying at 50 °C
for 24 hours), T4 (Sun drying for 24 hours), T5 (Water soaking for 24 hours),
and T6 (Water soaking for 48 hours). 25 seeds were placed in a Petri dish.
Parameters such as germination percentage, seed germination index, seed vigour
index, mean germination time, shoot length of seedlings, root length of
seedlings, fresh weight of seedlings and dry weight of seedlings were
collected. The collected data were statistically analyzed using Minitab 17
version software and mean comparison within treatments was performed by
Turkey’s test. The results reveled that different seed dormancy-breaking
techniques had a substantial (P<0.05) impact on rice variety At 307. This
experiment revealed that sun drying for 24 hours was the best dormancy-breaking
method compared with other methods. Sun drying for 24 hours significantly
breaks the dormancy of the rice variety At 307, increases the germination
percentage (93.6%) and enhances vigor index (1293.9). The study concluded that
sun drying for 24 hours could be recommended to break the prolonged dormancy of
rice variety At 307.
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Pages:26-32
How to cite this article:
SF Faseeha, S Anula, T Geretharan, S Srikrishnah "Effect of different seed treatments on breaking the dormancy of rice seeds (<i>Oryza sativa</i> L.) variety At 307". International Journal of Botany Studies, Vol 9, Issue 1, 2024, Pages 26-32
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