Comparative study of coconut genotypes for components of photosynthesis and respiration

Abstract

The three coconut genotypes, West Coast Tall (WCT), Chowghat Dwarf Orange (CDO) and the hybrid WCTxCDO (TxD) were com-pared for the rate of apparent photosynthesis, dark respiration, chlorophylls a and b, total carotenoids, relative assimilation rate (RAR), leaf area, and stomatal frequency. With die exception of WCT, the rate of photosynthesis was not correlated with yield, There was significant difference in the rate of photosynthesis between TxD and WCT. CDO exhibited higher dark respiration as compared to WCT and TxD. TxD had significantly higher amounts of total chlorophylls than WCT and CDO. Stomatal frequency was not related with the rate of photosynthesis. The total leaf area of T x D was the highest followed by WCT and CDO. The results indicate that the total leaf area might be an important factor determining productivity.

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Citation

In: Proceedings, PLACROSYM V, CPCRI, Kasaragod, 15-18 Dec. 1982. Edited by K. V. A. Bavappa and others 1984 p-231-234

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