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Effect of irradiance and plant age on the dimensions of the growing shoot of poplar
Author(s) -
Pieters George A.,
Noort M. E.
Publication year - 1988
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1988.tb02004.x
Subject(s) - shoot , irradiance , botany , biology , horticulture , salicaceae , relative humidity , nutrient , woody plant , ecology , physics , quantum mechanics , thermodynamics
Populus euramericana (Dode) Guinier cv. Robusta plants were cultivated at irradiances of 7.5, 15 and 30 W m −2 (32.5, 65 and 130 μmol m 2 s −1 ), 400–700 nm at 22°C and a relative humidity between 40 and 60% on a gravel culture subirrigated with Hoagland's nutrient solution. The basal diameter of the growing shoot, a measure of the number of apical cells participating in growth, increased proportionally to irradiance and was correlated with mature leaf length. The development of the length of the growing shoot (L gs ) depended also on the nutritional status of the (young) shoot. L gs was strongly correlated with the rate of height growth.

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