Internode Length in Pisum. A New Allele at the le Locus |
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Authors: | ROSS, JOHN J. REID, JAMES B. |
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Affiliation: | Botany Department, University of Tasmania Hobart, Tasmania 7001, Australia |
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Abstract: | In Pisum sativum L. a third, more severe, allele at the internodelength locus le is identified and named led. Plants homozygousfor led possess shorter internodes and appear relatively lessresponsive to GA20 than comparable le (dwarf) plants. Gene ledmay act by reducing the 3ß-hydroxylation of GA20 tothe highly active GA1 more effectively than does gene le. Theresults indicate that le is a leaky mutant and therefore thatendogenous GA1 influences internode elongation in dwarf (le)plants. Pisum sativum, peas, internode length, genetics, gibberellin, dwarf elongation |
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