PERFORMANCE OF HYBRID AND MODERN INBRED RICE VARIETIES UNDER AEROBIC CONDITION

Abstract

The field experiment was conducted at the Research Farm of Sher-e-Bangla Agricultural University, Dhaka during November, 2017 to June, 2018 to study the performance of hybrid and modern rice varieties under aerobic condition. The experimental treatments comprised of five varieties (V 1 = BRRI dhan 29, V 2 = Hybrid-3, V 3 = Moina, V 4 = Nobin and V = Hira-2) and different cultivation methods T 1

=SRI Method, T 2

= raised upland and T = Traditional). The experiment was laid out in Randomized Complete Block Design (RCBD) with 3 replications. The unit size of the plot was 4.0 m × 2.5 m. Data on plant height, number of tillers and leaves hill -1 3 were recorded at 45 DAT, 60 DAT, 75 DAT, 85 DAT and at harvest. And leaf length and leaf breath were at 60 DAT, 75 DAT and 85 DAT. The variety Nobin (V ) provided the highest significant performance in respect of plant height (36.24, 66.01, 82.94, 96.57 and 112.78 cm), number of tillers (6.58, 13.78, 15.58, 18.87 and 14.98), number of effective tillers hill 4 (13.56), leaves hill -1 (20.34, 44.29, 40.83, 54.84 and 50.28), leaf length (38.56, 35.56 and 48.20cm), leaf breath (0.88, 1.39 and 1.68cm), flag leaf length (34.18cm), flag leaf breadth (1.57cm), penultimate leaf length (41.68cm), dry weight of three leaves (0.63 g), penultimate leaf breadth (1.42cm), dry weight of leaves (16.48 g), chlorophyll content (50.36 mg g -1 ), dry stem weight (55.59 g), number of panicle (10.06), panicle height (101.22cm), panicle length (25.60 cm), panicle weight (17.91g), 1000-grain weight (26.14 g), highest grain yield (5.20 t ha ) and highest straw yield (5.20 t ha -1 ). T (traditional method)

exhibited the highest significant performance in respect of number of tillers (6.65, 13.68,15.98,15.51 and 14.20), number of effective tillers hill (13.27), number of leaves hill 3 -1 5 -1 (21.13, 45.62, 41.15, 46.20 and 49.26), number of leaves hill

(21.13, 45.62, 41.15, 46.20 and 49.26), leaf length (38.50, 35.70 and 46.03cm), leaf breadth (0.82, 1.35 and 1.64cm, flag leaf length (33.24cm) , flag leaf breadth (1.45cm) , penultimate leaf length (38.55cm), penultimate leaf breadth (1.44cm), dry weight of leaves (15.77g), dry weight of three leaves (0.63g), dry stem weight (51.04g), chlorophyll content (50.62 mg g ), number of panicle (8.40), panicle height (96.21cm), panicle weight (16.13g), 1000-grain weight (26.38g), highest grain yield (5.38 t ha -1 ) and highest straw yield (5.54t ha -1 ). The highest plant height obtained from T

(raised upland) was recorded 35.44, 61.70, 76.51, 88.31 and 105.27cm. The maximum (1.60) number of effective tillers hill 2 -1 was obtained from T . There was significant effect of variety and aerobic condition. The interaction V 4 T 3 1

showed the highest significant performance in respect of plant height 37.97, 70.17, 51, 87.40, 101.23 and 115.67 cm, number of tiller (7.67, 17.57, 17.07, 19.97 and 18.33), number of effective tillers hill -1 (16.67), number of leaves hill -1 (23.00, 47.67, 53.07, 60.30 and 62.00), leaf length (42.33, 37.67 and 54.13cm), flag leaf length (39.80cm), flag leaf breadth (1.80cm), penultimate leaf length (44.00cm), penultimate leaf breadth (1.82cm), dry weight of leaves (20.50g), dry weight of three leaves (0.80g), dry stem weight (61.10g), chlorophyll content (61.00 mg g -1 ), number of panicle (11.17), panicle height (103.00cm), panicle length (26.73 cm), panicle weight (20.63g), 1000-grain weight (26.23g), highest grain yield (5.60 t ha -1 ) and highest straw yield (5.73 t ha -1 ). The highest leaf length of rice plants that received from V 3 T 3 . So, it may be concluded that the V

(traditional) as singly or their interaction were more successful for produce the highest results. 4 -1 -1

(Nobin) and T -1 -1 3