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J. Heslop-Harrison (1957)
THE EXPERIMENTAL MODIFICATION OF SEX EXPRESSION IN FLOWERING PLANTSBiological Reviews, 32
John Moore (1959)
Male Sterility Induced in Tomato by Sodium 2,3-DichloroisobutyrateScience, 129
E. Putt (1962)
THE VALUE OF HYBRIDS AND SYNTHETICS IN SUNFLOWER SEED PRODUCTIONCanadian Journal of Plant Science, 42
L. Paleg, D. Aspinall (1958)
Inhibition of the Development of the Barley Spike by Gibberellic AcidNature, 181
M. Kinman, F. Earle (1964)
Agronomic Performance and Chemical Composition of the Seed of Sunflower Hybrids and Introduced Varieties 1Crop Science, 4
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Selective Gametocide Opens Way to Hybrid Cotton.Science, 126 3284
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Studies on the chemical induction of pollen sterility in some crop plants.Indian Journal of Genetics and Plant Breeding, 20
Edith Neidle (1939)
Nitrogen Nutrition in Relation to Photoperiodism in Xanthium PennsylvanicumBotanical Gazette, 100
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Male Sterile Plants by Chemical TreatmentNature, 170
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B. Stefansson (1959)
A METHOD FOR ESTIMATING THE PERCENTAGE OF HYBRIDS IN SEEDLOTS OF FIRST GENERATION ADVANCE SUNFLOWERS BY MEANS OF A SEEDLING CHARACTERISTICCanadian Journal of Plant Science, 39
122 39 39 6 6 Prof. Dr. W. Schuster Institut für Pflanzenbau und Pflanzenzüchtung der Justus-Liebig-Universität in Gießen Germany Summary 1. Male-sterile plants could be selected for several generations. These produce by sib mating (malesterile x fertile) 50% male-sterile and 50% fully fertile descendants. In two cases crossing resulted in 75% malesterile plants in F 1 . 2. Two new varieties, which had originated from a combination of breeding by self pollinations and by multiple crossings and which show earlier flowering under shorter photoperiods than do other varieties, were sawn in July 1966 and 1967. Flowering began at the end of September and in the beginning of October, there was found an 80–100% male-sterility (retrogressive antheres). Varieties which react less to short day treatment had complete fertile flowers. 3. Experiments which were started some years earlier to induce male-sterility of sun-flowers by active substances brought the following results in 1963–1967: a) Gibberellic acid treatment (0.5–0.25 mg/plant) applied at the beginning of bud formation, induced malesterility. In this way it is possible to produce small quantities of hybrid seed and to test topcrosses. b) Some combinations of gibberellic acid with other active substances, e.g. 0.25 mg gibb. ac. + 0.25 mg TJBS, 0.25 mg gibb. ac. + 0.1 mg NES, 0.25 mg gibb. ac. + 0.1 mg IES and 0.25 mg gibb. ac. + 0.5 mg CCC induced malesterility but permitted sufficient female fertility. c) At a male-sterility of 90–100% total average fertility of 10 plants was only 25–75%. In treating 87 plants of the inbred line ‘HEBH’ a production of kernels ranging from 0 to 86% was found, 39% on the average, that is 202 kernels/flower, as compared to 90% for untreated plants. d) Varieties and inbred lines show different reactions to the treatment. There are also marked differences in effects of active substances under different climatic conditions, which makes the practical application of treatments difficult. It therefore becomes necessary to test different varieties for reaction to active substances or to combinations of these substances under different climatic conditions.
TAG Theoretical and Applied Genetics – Springer Journals
Published: Jan 1, 1969
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