Influence of root excretions of oat seedlings and cereal grain exudates on germination of leguminous crops seeds and of extracts from pea seeds on oat and barley
Jerzy Księżak
iung@iung.pulawy.plZakład Uprawy Roślin Pastewnych, Instytut Uprawy Nawożenia i Gleboznawstwa, Puławy (Poland)
Abstract
The influence of root excretions of oat seedlings on germination of pea, vetch, blue and yellow lupine seeds was investigated. The effect of oat and barley grain exudates on pea seeds and the influence of extracts from pea seeds on kernels of these cereals was additionally evaluated. The experiments were done in a laboratory. The influence of root excretions of oat seedlings on germination of leguminous crops seeds was stronger than the effect of grain exudates. Root extracts of oat seedlings stimulated or inhibited germination of pea, vetch, blue and yellow lupine seeds and development of germs and rootlets. After four days oats root excretions at higher concentration inhibited the rootlet development of all tested leguminous species and at lower concentration limited the root weight of pea, blue lupine and vetch (also root length of vetch). On the other hand, after 8 days these excretions limited the root development of blue lupine most intensely independently of concentration. Extract of oat seeds soaked for 72 hours stimulated germination of pea seeds after 4 days and extract of oat seeds soaked for 24 hours stimulated pea seeds germination after 8 days. On the other hand such effect of barley seed extract on pea seeds germination was not observed. Pea seeds exudates soaked by 72 hours inhibited germination of oat kernels, strongly limited germination of barley kernels and retarded growth of sprouts and rootlets of the both cereals.
Keywords:
cereal grain exudates, roots excretions, seeds germinationReferences
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Authors
Jerzy Księżakiung@iung.pulawy.pl
Zakład Uprawy Roślin Pastewnych, Instytut Uprawy Nawożenia i Gleboznawstwa, Puławy Poland
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