Abstract
THREE new bulletins have been issued in the Herbage Publication Series by the Imperial Bureau of Plant Genetics, Aberystwyth. Bulletin 19, "Production of Grass Seed" (price 5s.), is edited by R. O. Whyte and consists of an international exchange of opinions and experiences on the technique of producing seed of graminaceous herbage and forage plants. The countries represented are Scotland, Northern Ireland, New Zealand, the United States, Germany and Sweden, the names and addresses of the contributors being supplied in each case. Bulletin 20, "Insect and other Pests injurious to the Production of Seed in Herbage and Forage Crops"(price 2s. 6d.), has been prepared by H. F. Barnes. This paper is essentially a summary of the available information concerning some of these pests, but although growers should find this most useful, they are nevertheless advised to consult the advisory entomologist in their particular area as to the best method for safeguarding their crops, as it is impossible to secure really satisfactory results without due attention to local conditions. Bulletin 21, "The Influence of Climatic Conditions on Type Composition", by Nils Sylvén (price 1s.), gives an account of experiments in Sweden on the changes induced in herbage plants grown for seed outside their proper growing districts. It is evident that there is considerable danger of loss of valuable characters if this process is continued. For satisfactory results, seed must be obtained direct from the breeding station or its vicinity, and care taken to keep seed from the original source scrupulously apart from that grown in a different, locality, or much of the value of the selection w6rk will be lost.
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Grass Seed Production. Nature 141, 639 (1938). https://doi.org/10.1038/141639b0
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DOI: https://doi.org/10.1038/141639b0