Premium
Patterns of nodal rooting in Trifolium repens (L.) and correlations with stages in the development of axillary buds
Author(s) -
NEWTON P. C. D.,
HAY M. J. M.
Publication year - 1994
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1994.tb02001.x
Subject(s) - nodal , primordium , axillary bud , biology , trifolium repens , apex (geometry) , node (physics) , main stem , pasture , botany , anatomy , agronomy , explant culture , biochemistry , structural engineering , engineering , in vitro , gene
Forty per cent of while clover nodes had roots when a pasture was rotationally grazed by sheep compared with 29% when grazed continuously by set stocking. Nodal roots were most frequent during spring and least frequent during summer. About 5% of nodes had a root primordium which had not developed but was still viable. A high proportion of nodal roots (66%) occurred within 10 nodes of the apex. Root presence was highly correlated with the establishment and survival of branches but was less closely related to branch initiation or the viability of axillary buds. It is suggested that the association between nodal roots and branches is strongest when resources are limited, and that root survival at a node is enhanced by the presence of a branch originating at the same node.