Premium
Water stress and root formation in pea cuttings
Author(s) -
RAJAGOPAL VELAMOOR,
ANDERSEN A. SKYTT
Publication year - 1980
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.1399-3054.1980.tb03234.x
Subject(s) - cutting , perlite , horticulture , moisture stress , water stress , botany , osmotic shock , biology , peg ratio , moisture , irradiance , chemistry , biochemistry , physics , organic chemistry , finance , quantum mechanics , gene , economics
The stock plants of pea ( Pistum sativium L. cv. Alaska) grown for 11 days at 16 W m −2 38 W m −2 were subjected to different degrees of moisture stress, simulated with polyethyleneglycol (PEG, 6000) for different periods. The cuttings were made at the end of stress treatments, planted in perlite and allowed to root in a mist propagation chamber. The number of adventitious roots formed on the cuttings from non‐stressed plants was significantly higher under low (16 W m −2 ) than under high (38 W m−2 ) irradiance. However, under the influence of short duration stress the number of roots increased significantly under high but not under low irradiance. There was significantly poor rooting after prolonged stress under both irradiances. The leaf osmotic potential ψ π showed a greater reduction with increasing degree and duration of stress at 38 W m −2 than at 16 W m −2 . The differential rooting behaviour as a result of stress levels and irradiances is discussed in the light of available literature on adventitious root formation.