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- Title
Hydroponic Screening for Iron Deficiency Tolerance in Evergreen Azaleas.
- Authors
DEMASI, Sonia; CASER, Matteo; KOBAYASHI, Nobuo; KURASHIGE, Yuji; SCARIOT, Valentina
- Abstract
Evergreen azaleas grow in acid soil and suffer from iron deficiency when cultivated in substrate with pH higher than 6.0. In order to select tolerant plants, 11 azalea genotypes were tested for 21 days in alkaline solution (pH 9), buffered with sodium hydrogen carbonate (1 g.l-1 ). Leaf damage, root length and mortality rate were recorded. While leaf damage and mortality rate allowed to discriminate genotypes, root development appeared not directly linked to iron deficiency tolerance. Rhododendron 'Juko', R. scabrum, R. macrosepalum 'Hanaguruma', R. x pulchrum 'Oomurasaki', and R. x pulchrum 'Sen-e-oonomurasaki' resulted iron efficient genetic resources, useful for azalea cultivation and gardening in calcareous soils. On the contrary, R. obtusum 'Kirin', R. tosaense, R. x mucronatum 'Fujimanyo' and R. obtusum 'Susogo-no-ito' resulted iron deficiency sensitive genotypes. R. x mucronatum 'Ryukyushibori' and R. indicum 'Kinsai' showed intermediate responses.
- Subjects
HYDROPONICS; AZALEAS; RHODODENDRONS; ALKALINITY; PLANT breeding
- Publication
Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2015, Vol 43, Issue 1, p210
- ISSN
0255-965X
- Publication type
Article
- DOI
10.15835/nbha.43.1.9929