New Zealand Journal of Agricultural Research abstracts
Potential of Cytisus and allied genera (Genisteae: Fabaceae) as forage
shrubs
1. Seed germination and agronomy
FERNANDO GONZáLEZ-ANDRÉS
JESúS MARíA ORTIZ
Departamento de Biología Vegetal
Escuela Técnica Superior de Ingenieros
Agrónomos
Universidad Politécnica de Madrid
28040 Madrid, Spain
Abstract The potential adaptability of 19 shrubby legume
species belonging to the genus Cytisus and allied genera
(Cytisophyllum, Chamaecytisus, and Genista sect. Teline)
for arid regions was studied. Twenty-eight accessions were assessed for
germination level, field survival, height and diametrical growth, and dry
matter yields. All accessions had high germination, often over 80%, when seeds
were scarified with sulphuric acid for 40 min. Two germination temperatures
were tested: constant 16deg.C and alternating 21/16deg.C. Optimum temperature
varied according to the different species. Cytisophyllum sessilifolium,
Cytisus purgans, Cytisus villosus, and Chamaecytisus sp. pl.
had more rapid and higher germination at 21/16deg.C compared with at 16deg.C.
In the field, Genista canariensis and G. monspessulana had the
highest growth, and survival around 80%. Chamaecytisus accessions showed
the highest survival and an intermediate growth. Cytisophyllum
sessilifolium, Cytisus heterochrous, Cytisus villosus, and G.
linifolia presented intermediate growth as well, and survival around 75%,
whereas the rest of the Cytisus accessions as well as G. tenera,
presented very low survival rates.
Keywords Cytisophyllum; Cytisus; Genista; Chamaecytisus;
Teline; seed germination; field survival; height growth; diametrical
growth; dry matter yield
New Zealand Journal of Agricultural Research, 1996, Vol. 39: 195-204
0028-8233/96/3902-0195 $2.50/0 (c) The Royal Society of New Zealand
1996
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