- Email: [email protected]
4569914 Process for the sterile micropropagation of plant material
378
PATENT ABSTRACTS
4568435 METHOD FOR IMPROVING P R O D U C T Y I E L D S IN AN ANIONIC METALLOPORPHYRINBASED ARTIFICIAL PHOTOSYNTHESIS SYSTEM John A Shelnutt assigned to The United States of America as represented by the United States Department of Energy A method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation which comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a gas hydrogen. Ligands attached above and below the metaIloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound pi- pi complexes which can develop.
4569152 LBN CYTOPLASM Vernon E Gracen, Paul Sisco, Pierre Bouthyette assigned to Agrigenetics Research Associates Limited; Cornell Research Foundati Most of the corn in the United States is grown from hybrid seed. The production of hybrid seeds necessitates the emasculation of the desired female parent plant. If this emasculation is carried out by hand, then it becomes a major cost factor. One method to overcome these costs is to obtain inbred lines of corn which have stable cytoplasmic male sterility. Such cytoplasmic male sterility should remain stable when the genome of the inbred line is replaced by the genomes of other inbred lines by backcrossing. Three major groups of cytoplasmic male sterility (C, T and S) have been extensively studied. In the past the cms S-type has not been extensively utilized in the production of hybrid corn seed because cms S-cytoplasms do not show stable male sterility and also in some backgrounds have a high rate of genetic reversion to male fertility. We describe here the production of a novel stable cytoplasmic male sterile strain (LBN) which remains stably sterile in combination with a large
number of inbred corn lines. Some unusual features of this LBN-cytoplasm are described and discussed.
4569841 ERWINIA HERBICOLA STRAIN THAT INHIBITS PATHOGENIC PLANT BACTERIA Shih-Tung Liu assigned to Chevron Research Company A strain of Erwinia herbicola identified as EHO10 has been found to have a broad spectrum of inhibitory activity against pathogenic bacteria. Pathogenic bacteria inhibited by EHO-10 includes those from the following genera: Agrobacterium, Corynebacterium. Erwinia, Pseudomonas, and Xanthomonas. EHOoI0 has inhibitory activity against Erwinia amylovora, a bacteria pathogen causing fire blight disease of pear and other trees.
4569914 PROCESS FOR THE STERILE MICROPROPAGATION OF PLANT MATERIAL Gyorgy Molnar, Peter Tetenyi, Eva Dobos, Jeno Bernath, Budapest, Hungary assigned to Gyogynoveny Kutato Intezet The invention relates to a process for the production of propagating material of plants by micropropagation in sterile tissue culture which comprises (a) planting sterile shoot cuttings of plants in solid nutrient medium in a suitable flask, filling up the flask with a suitable liquid nutrient medium optionally containing a growth regulator and growing the shoots in the submersed system: thereafter (b) cutting up into pieces the ramified culture thus obtained which contains a number of lateral buds and shoots, rooting the top-end shoots and planting the same after adaptation, and subjecting the cuttings prepared from the lower and middle parts of the shoot cultures to further cultivations according to step (a); and repeating steps (a) and (b) until the desired number of top-end shoots is reached.
PATENT ABSTRACTS
4568435 METHOD FOR IMPROVING P R O D U C T Y I E L D S IN AN ANIONIC METALLOPORPHYRINBASED ARTIFICIAL PHOTOSYNTHESIS SYSTEM John A Shelnutt assigned to The United States of America as represented by the United States Department of Energy A method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation which comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a gas hydrogen. Ligands attached above and below the metaIloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound pi- pi complexes which can develop.
4569152 LBN CYTOPLASM Vernon E Gracen, Paul Sisco, Pierre Bouthyette assigned to Agrigenetics Research Associates Limited; Cornell Research Foundati Most of the corn in the United States is grown from hybrid seed. The production of hybrid seeds necessitates the emasculation of the desired female parent plant. If this emasculation is carried out by hand, then it becomes a major cost factor. One method to overcome these costs is to obtain inbred lines of corn which have stable cytoplasmic male sterility. Such cytoplasmic male sterility should remain stable when the genome of the inbred line is replaced by the genomes of other inbred lines by backcrossing. Three major groups of cytoplasmic male sterility (C, T and S) have been extensively studied. In the past the cms S-type has not been extensively utilized in the production of hybrid corn seed because cms S-cytoplasms do not show stable male sterility and also in some backgrounds have a high rate of genetic reversion to male fertility. We describe here the production of a novel stable cytoplasmic male sterile strain (LBN) which remains stably sterile in combination with a large
number of inbred corn lines. Some unusual features of this LBN-cytoplasm are described and discussed.
4569841 ERWINIA HERBICOLA STRAIN THAT INHIBITS PATHOGENIC PLANT BACTERIA Shih-Tung Liu assigned to Chevron Research Company A strain of Erwinia herbicola identified as EHO10 has been found to have a broad spectrum of inhibitory activity against pathogenic bacteria. Pathogenic bacteria inhibited by EHO-10 includes those from the following genera: Agrobacterium, Corynebacterium. Erwinia, Pseudomonas, and Xanthomonas. EHOoI0 has inhibitory activity against Erwinia amylovora, a bacteria pathogen causing fire blight disease of pear and other trees.
4569914 PROCESS FOR THE STERILE MICROPROPAGATION OF PLANT MATERIAL Gyorgy Molnar, Peter Tetenyi, Eva Dobos, Jeno Bernath, Budapest, Hungary assigned to Gyogynoveny Kutato Intezet The invention relates to a process for the production of propagating material of plants by micropropagation in sterile tissue culture which comprises (a) planting sterile shoot cuttings of plants in solid nutrient medium in a suitable flask, filling up the flask with a suitable liquid nutrient medium optionally containing a growth regulator and growing the shoots in the submersed system: thereafter (b) cutting up into pieces the ramified culture thus obtained which contains a number of lateral buds and shoots, rooting the top-end shoots and planting the same after adaptation, and subjecting the cuttings prepared from the lower and middle parts of the shoot cultures to further cultivations according to step (a); and repeating steps (a) and (b) until the desired number of top-end shoots is reached.