Rapid-growth responses of corn root segments: Effect of auxin on elongation

Planta ◽  
1977 ◽  
Vol 135 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Kathryn L. Edwards ◽  
T. K. Scott
Keyword(s):  
Rapid Growth ◽  
Growth Responses ◽  
Corn Root ◽  
Root Segments

Rapid growth responses of corn root segments: Effect of pH on elongation

Planta ◽  
1974 ◽  
Vol 119 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Kathryn L. Edwards ◽  
Tom K. Scott
Keyword(s):  
Rapid Growth ◽  
Growth Responses ◽  
Effect Of Ph ◽  
Corn Root ◽  
Root Segments

scholarly journals Polar Transport Characteristics of Radiostrontium and Radiocalcium in Isolated Corn Root Segments

1967 ◽  
Vol 42 (5) ◽  
pp. 747-750 ◽  
Author(s):  
Burton E. Vaughan ◽  
Evan C. Evans ◽  
Maxine E. Hutchin
Keyword(s):  
Polar Transport ◽  
Corn Root ◽  
Root Segments

scholarly journals Evolution of growth by genetic accommodation in Icelandic freshwater stickleback

2013 ◽  
Vol 280 (1772) ◽  
pp. 20132197 ◽  
Author(s):  
Beren W. Robinson
Keyword(s):  
Genetic Variation ◽  
Rapid Growth ◽  
High Salinity ◽  
Individual Growth ◽  
Growth Responses ◽  
Heritable Variation ◽  
Genetic Accommodation ◽  
Low Salinity ◽  
Evolutionary Response ◽  
Plastic Responses

Classical Darwinian adaptation to a change in environment can ensue when selection favours beneficial genetic variation. How plastic trait responses to new conditions affect this process depends on how plasticity reveals to selection the influence of genotype on phenotype. Genetic accommodation theory predicts that evolutionary rate may sharply increase when a new environment induces plastic responses and selects on sufficient genetic variation in those responses to produce an immediate evolutionary response, but natural examples are rare. In Iceland, marine threespine stickleback that have colonized freshwater habitats have evolved more rapid individual growth. Heritable variation in growth is greater for marine full-siblings reared at low versus high salinity, and genetic variation exists in plastic growth responses to low salinity. In fish from recently founded freshwater populations reared at low salinity, the plastic response was strongly correlated with growth. Plasticity and growth were not correlated in full-siblings reared at high salinity nor in marine fish at either salinity. In well-adapted lake populations, rapid growth evolved jointly with stronger plastic responses to low salinity and the persistence of strong plastic responses indicates that growth is not genetically assimilated. Thus, beneficial plastic growth responses to low salinity have both guided and evolved along with rapid growth as stickleback adapted to freshwater.

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