Title: Influence of purines and pyrimidines on cold hardiness of plants
Abstract: The development and retention of cold hardiness and associated metabolic alterations in alfalfa (Medicago sativa L.) plants which had their growth regulated by guanine, cytosine, 2-chloroethyl-trimethyl ammonium chloride, or gibberellic acid were studied. Cold hardiness could be developed or retarded regardless of the amount of top growth produced. It was concluded that the increased cold hardiness resulting from guanine or cytosine treatment was not due primarily to retardation of growth, but rather to an alteration of metabolism which resulted in a higher concentration of water-soluble protein. Guanine or cytosine generally increased the concentration of nucleic acids and had no consistent effect on the concentration of soluble sugars. Effect of 2-chloroethyl-trimethylammonium chloride or gibberellic acid on growth was not consistently related to their effects on the development or retention of cold hardiness. Even though metabolism during dehardening was markedly different from that associated with hardening, the same relationship existed between cold hardiness and the concentration of water-soluble protein or sucrose.
Publication Year: 1971
Publication Date: 1971-11-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 10
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