Plant-Breeding and Mutations

Seed Quality and the Principles of Forest Genetics

“…5 A). Seed damaged physiologically, in our case owing to a late transplantation of graft material, can as evidenced by the discussion in SIMAK and GUSTAFSSON (1954) be detected by the conspicuous decrease in X-ray absorption (1. c., Fig. 19).…”

“…-These considerations lead on to problems of plant-breeding. In agriculture the primary aim of plantbreeding is to increase yield per hectare, facilitate the technique of cultivation and lower the costs of production (GuSTAFSSON and TEDIN, 1954). In forest trees the time element also enters the picture.…”

“…The principles underlying the seed shape were originally worked out by SIMAK (1953 a) for pine and were then further analysed by PLYM FORSHELL (1953) , SIMAK (1953 b, 1955) , as well as SIMAK and GUSTAFSSON (1954).…”

Genetic variability in quantitative characters induced by thermal neutron treatment of diploid, tetraploid and hexaploid oat seeds

“…al. 1942, Gustaf sson and Tedin 1954, Abrams 1956, Konzak et a^L. 1961a, Sparrow and Evans 1961, Swaminathan 1961, length and stage of the nuclear division (Konzak et al 1961a, Nilan 1960, Sparrow and Evans 1961, and seed size and covering (Gonzalez 1957).…”

Variability in quantitative characters of oats (Avena sativa) induced by recurrent matagenesis

“…A number of commercial varieties of crops have been developed and released through mutation breeding* Primex white mustard - Anderson and Olson (1954) Pallas barley - Borg (1958) Stralart peas - Gustafsson and Tedin (1954) Sanilac navy bean - Down and Andersen (1956) The seeds of all the treatments (i.e., EMS, TN and check)…”