Genetic regulation of flowering in grafts on Pisum sativum L. [Peas, effect of grafting on growth and development]

• Published in: Plant physiology (Bethesda) 1984-07, Vol.75 (3), p.634-638
• Main Author: Proebsting, William M.
• Format: Article
• Language: English
• Subjects: Agronomy. Soil science and plant productions; Biological and medical sciences; Classical and quantitative genetics. Population genetics. Molecular genetics; Classical genetics, quantitative genetics, hybrids; Cotyledons; Delay lines; Flowering; Flowers; Fundamental and applied biological sciences. Psychology; Generalities. Genetics. Plant material; Genetics and breeding of economic plants; Genetics of eukaryotes. Biological and molecular evolution; Genotypes; Peas; Photoperiod; Plants; Pteridophyta, spermatophyta; Receptors; Scions; Vegetals
• ISSN: 0032-0889; 1532-2548
• DOI: 10.1104/pp.75.3.634

Lf, E, Sn, and Hr are major loci that condition the flowering and photoperiod responses of Pisum sativum L. Genetic lines containing the dominant alleles of these loci are characterized by flowering in long days, but having a prolonged (>50 node) vegetative phase in short days. A representative of this class, response type G, was used as a receptor in short days for donors of other flowering response types. The qualitative and quantitative flowering response of G receptors depended on the genotype of the donor. Donors containing sn hr induced the earliest development, followed by sn Hr and Sn hr donors. The Lf and E loci in foliar donors apparently did not affect flowering of G. Five-leaved > single-leaved > cotyledonary donors in effecting a flowering response in G, in part due to the longer life of the foliar donors. The responses of G to the various donors were generally consistent with the proposed roles of Lf, E, and Sn, but the role of Hr in these grafts was unclear.