Publication Date
1989
Description
The obstacle to the variety diffusion of Panicum maximum has been for a long time its low seed production (Humphreys, 1966) owing to a limited number of accessions, to the apomictic mode of reproduction, to the harvest practices and to an unfavourable flowering behavior. An original breeding scheme has been adjusted in Ivory Coast (Noirot, 1983) on the bases of the natural variability collectings (Pernes, 1975 ; Combes, 1975), of the sexual plants discovery (Combes and Pernes, 1970) and of the control of apomixis heredity (Savidan, 1982). Its application to the seed production requires preliminary study of the natural potentialities and of their variability. The total number of spikelets, - the potential production -, depends on the number of inflorescences and on the number of spikelets per inflorescence. The observed relations between these two components and its variability are studied here. The consequences on breeding are discussed too.
Citation
Noirot, M, "Diversity of the Components of the Potential Seed Production in Panicum maximum Jacq. Consequences on Breeding" (2025). IGC Proceedings (1989-2023). 27.
https://uknowledge.uky.edu/igc/1989/session5/27
Included in
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Diversity of the Components of the Potential Seed Production in Panicum maximum Jacq. Consequences on Breeding
The obstacle to the variety diffusion of Panicum maximum has been for a long time its low seed production (Humphreys, 1966) owing to a limited number of accessions, to the apomictic mode of reproduction, to the harvest practices and to an unfavourable flowering behavior. An original breeding scheme has been adjusted in Ivory Coast (Noirot, 1983) on the bases of the natural variability collectings (Pernes, 1975 ; Combes, 1975), of the sexual plants discovery (Combes and Pernes, 1970) and of the control of apomixis heredity (Savidan, 1982). Its application to the seed production requires preliminary study of the natural potentialities and of their variability. The total number of spikelets, - the potential production -, depends on the number of inflorescences and on the number of spikelets per inflorescence. The observed relations between these two components and its variability are studied here. The consequences on breeding are discussed too.
