Leaf chlorophyll content of submerged rice seedlings
1987
Gupta, S. | Sengupta, P. | Banerji, B. (Rice Research Station, Chinsurah, West Bengal (India))
The leaf chlorophyll content of seedlings of six rice varieties (B-9C-Md-3-3, CN540, CR126-42-1, FR13A, Mohon, and OC1393) grown in pots were assessed under submerged and nonsubmerged condtions. Seedlings were raised in 25-cm-diameter earthen pots at 50 seeds/pot with 8 replications. At 10 d after seeding (DAS), 4 pots/variety were submerged in 50-cm water for 10 d, then treated normally to 35 DAS. Leaf chlorophyll content was estimated at 10, 12, 16, 20, 24, and 35 DAS. Leaf chlorophyll content decreased with increasing age of seedlings. Chlorophyll content in submerged seedlings was similar to that in nonsubmerged seedlings up to 6 d after submersion, then dropped drastically. After submersion ended, chlorophyll content continued to decrease for 4 d before recovery started. B-9C-Md-3-3 had the highest chlorophyll content after submergence. CN540 seedlings had the highest chlorophyll content at 10 DAS, but content decreased faster with aging. Three varieties died.
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