Fig 1.
Effect of melatonin spraying on the yield of NJ9108 and NJ9308.
Vertical bars represent the ±standard errors of the mean (n = 3) where these exceed the size of the symbol. Different letters above the columns indicate significant differences at the p < 0.05 level within the same index.
Fig 2.
Effect of melatonin spraying at on yield components of NJ9108 and NJ9308.
(A) Panicle per m2; (B) Spikelets per panicle; (C) Filled grains percentage; (D) 1000-grain weight. Vertical bars represent the ±standard errors of the mean (n = 3) where these exceed the size of the symbol. Different letters above the columns indicate significant differences at the p < 0.05 level within the same index.
Table 1.
Path analysis of yield and yield components of rice varieties with different treatments.
Fig 3.
Effect of melatonin spraying on panicle length and grain density of NJ9108 and NJ9308.
(A) Panicle length; (B)Grain density. Vertical bars represent the ±standard errors of the mean (n = 3) where these exceed the size of the symbol. Different letters above the columns indicate significant differences at the p < 0.05 level within the same index.
Fig 4.
Effect of melatonin spraying on NJ9108 and NJ9308 panicle structure.
(A) Primary branch per panicle; (B) Secondary branch per panicle; (C) Primary spikelets per panicle; (D) Secondary spikelets per panicle; (E) Spikelets per primary branch; (F) Spikelets per secondary branch; (G) Primary branch filled grains percentage; (H) Secondary branch filled grains percentage; (I) Primary spikelets grains weight; (J) Secondary spikelets grains weight. Vertical bars represent the ±standard errors of the mean (n = 3) where these exceed the size of the symbol. Different letters above the columns indicate significant differences at the p < 0.05 level within the same index.
Fig 5.
Effect of melatonin spraying on hormone content in rice panicle during panicle differentiation.
(A) ZRs; (B) IAA; (C) GAs; (D) ABA. (I) Bract differentiation stage; (II) branching differentiation stage; (III) spikelet differentiation stage; (IV) pollen mother cell meiosis; (V) pollen filling. Vertical bars represent the ±standard errors of the mean (n = 3) where these exceed the size of the symbol. The different letters above each stage of panicle differentiation indicate significant differences at the p < 0.05 level within the same index.
Table 2.
Processing quality of rice grains on different branches and stems after melatonin treatment.
Table 3.
Appearance quality of rice grains on different branches and stems after melatonin treatment.
Table 4.
Nutritive quality of rice grains on different branches and stems after melatonin treatment.
Table 5.
Protein content of rice grains on different branches and stems after melatonin treatment.