scholarly journals Fire, Defoliation, and Competing Species Alter Aristida purpurea Biomass, Tiller, and Axillary Bud Production

2013 ◽  
Vol 66 (3) ◽  
pp. 290-296 ◽  
Author(s):  
M.L. Russell ◽  
L.T. Vermeire ◽  
N.A. Dufek ◽  
D.J. Strong
2012 ◽  
Vol 5 (2) ◽  
pp. 173-182 ◽  
Author(s):  
Brian P. O’Neill ◽  
Matthew P. Purnell ◽  
David J. Anderson ◽  
Lars K. Nielsen ◽  
Stevens M. Brumbley

Author(s):  
C. N. Page ◽  
Marian A. Barker

SynopsisHybridisation in Equisetum in Britain and Ireland is examined in respect of the exceptional numbers of hybrids present, their geographic and ecological distribution, their formation and subsequent spread.It is concluded that the moist oceanic climate and relative paucity of competing species in the British and Irish floras in post-glacial time have created uniquely favourable conditions for the formation and subsequent success of hybrid horsetails, promoting both the short-term persistence of weaker hybrids, and the extremly long-term persistence of others.The taxonomic inter-relations of parental combinations which have formed ecologically successful hybrids are discussed.


Experiments were recently reported showing that, in young seedlings of Pisum sativum , the complete inhibiting effect which the shoot exerts upon its axillary buds comes entirely or almost entirely from three or four of its developing leave acting together (6). A single developing leaf was found usually to inhibit only partially—that is to say, sufficiently to delay the growth of an axillary bud below it, but not to check it completely. The strength of this partial inhibiting effect was measured by the retardation of the outgrowth of the axillary buds of the first or lowest leaf, as compared with their growth in completely defoliated controls. Comparisons were further made of the inhibiting effects of single young leaves of equal sizes near the apex in seedlings of different ages and heights, and it was found that in very young short seedlings the inhibiting effect was very slight or inappreciable, although in seedlings of a height of about 30 mm. or more (but still possessing well filled cotyledons) the effect was strong.


2013 ◽  
Vol 25 (3) ◽  
pp. 834-850 ◽  
Author(s):  
Eduardo González-Grandío ◽  
César Poza-Carrión ◽  
Carlos Oscar S. Sorzano ◽  
Pilar Cubas
Keyword(s):  

2018 ◽  
Vol 54 (1) ◽  
pp. 112-116 ◽  
Author(s):  
María Mercedes Cobo ◽  
Bernardo Gutiérrez ◽  
María de Lourdes Torres

2018 ◽  
Vol 9 ◽  
Author(s):  
Danilo A. Ferreira ◽  
Marina C. M. Martins ◽  
Adriana Cheavegatti-Gianotto ◽  
Monalisa S. Carneiro ◽  
Rodrigo R. Amadeu ◽  
...  

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