Table 4 Effect of DHA and PA on rice growth and yield parameters recorded at the time of harvest (120 days after transplanting). The experiment was conducted in pots in a net house during the Aman season (August – November 2022). Plants were treated with DHA or PA alone or in combination as a foliar application or mock-treated with water or DMSO 15 days after transplanting (DAT) into the pots, followed by six spraying at 10 days intervals
Treatments | Tillers/hill | Effective tillers/hill | Panicle length (cm) | 1000 grain weight (g) | Total grains/panicle | Healthy grains/panicle | Unfilled/diseased grains/panicle | Straw yield (g) |
|---|---|---|---|---|---|---|---|---|
Control | 36.75 ± 2.3 c | 25.00 ± 1.9 c | 38.47 ± 1.2 d | 15.71 ± 0.6 b | 125.38 ± 10.3 d | 73.38 ± 8.9 e | 52.00 ± 5.3 a | 35.75 ± 3.4 d |
DHA 10 mM | 51.63 ± 2.6 ab | 33.25 ± 0.8 b | 47.13 ± 0.6 b | 16.21 ± 0.5 b | 154.00 ± 5.0 bc | 135.25 ± 5.0 bc | 18.75 ± 2.0 c | 58.71 ± 1.1 c |
DHA 20 mM | 58.00 ± 1.8 a | 46.13 ± 1.5 a | 51.50 ± 0.4 a | 22.96 ± 1.8 a | 180.00 ± 5.4 a | 171.75 ± 5.2 a | 8.25 ± 2.0 d | 89.87 ± 2.7 a |
PA 300 µM | 48.63 ± 4.1 b | 29.88 ± 2.8 bc | 43.50 ± 0.8 c | 16.00 ± 0.4 b | 149.50 ± 5.9 bc | 125.38 ± 5.4 c | 24.13 ± 1.4 c | 51.90 ± 1.3 c |
DHA 10 mM + PA 300 µM | 55.13 ± 3.1 ab | 42.63 ± 1.6 a | 48.06 ± 0.4 b | 17.24 ± 0.4 b | 166.25 ± 6.7 ab | 150.75 ± 6.9 b | 15.50 ± 0.8 cd | 68.91 ± 2.0 b |
DMSO 300 µM | 38.88 ± 2.6 c | 27.63 ± 0.8 c | 39.38 ± 1.9 d | 15.46 ± 0.5 b | 139.50 ± 7.2 cd | 102.13 ± 5.8 d | 37.38 ± 5.1 b | 34.11 ± 3.5 d |