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Heritability of Sr‐89 and Ca‐45 Accumulation in Barley Seedlings 1

1967; Wiley; Volume: 7; Issue: 4 Linguagem: Inglês

10.2135/cropsci1967.0011183x000700040010x

1435-0653

G. N. Fick, D. C. Rasmusson,

Agriculture, Plant Science, Crop Management

Heritability of Sr‐89 and Ca‐45 accumulation in seedling plants was studied in two crosses of barley. Seedling plants of parent, F 1 , F 2 , F 3 , and F 4 generations were grown in nutrient solution containing Sr‐89 and Ca‐45. Broad sense heritability estimates for Sr‐89 and Ca‐45 accumulation in the F 2 generation of the two crosses ranged from 36% to 58%. Estimates of heritability in the F 3 generation as obtained from the correlation of F 3 with F 4 , lines were 55% and 50% for Sr‐89 accumulation and 49% and 41% for Ca‐45. These estimates are sufficiently large to indicate that selection for high or low Sr‐89 and Ca‐45 accumulation would be effective on a single plant basis in F 2 and on the line basis in F 3 . Actual gains in FF 4 from hypothetical selection in FF 3 were substantial and similar to those predicted, particularly when selection was for low Sr‐89 and low Ca‐45 accumulation. Differences among lines in the ratio of Sr‐89/Ca‐45 were not heritable in the F 3 generation. Accumulation of Sr‐89 and Ca‐45 was highly correlated in the F 3 and F 4 generations. Thus, the data indicate a close relationship between Sr‐89 and Ca‐45 accumulation in the populations studied.