Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Lack, A."'
Autor:
Andrew Lack
Publikováno v:
New Phytologist. 130:217-223
summary In Britain there are four species of Polygala, three diploids, P. serpyllifolia, P. calcarea and P. amarella, and a tetraploid, P. vulgaris, all of which are morphologically similar. Isozymes of six enzyme systems in these species were compar
Autor:
Lack, Andrew J.
Publikováno v:
New Phytologist; Jun95, Vol. 130 Issue 2, p217-223, 7p
Publikováno v:
New Phytologist; Nov84, Vol. 98 Issue 3, p515-529, 15p
Autor:
Lack, Andrew J.
Publikováno v:
New Phytologist; Jun82, Vol. 91 Issue 2, p321-339, 19p
Autor:
Lack, Andrew J.
Publikováno v:
New Phytologist; Jun82, Vol. 91 Issue 2, p309-320, 12p
Autor:
Lack, Andrew
Publikováno v:
New Phytologist; Nov76, Vol. 77 Issue 3, p787-792, 6p
Autor:
Andrew Lack
Publikováno v:
New Phytologist. 91:309-320
The insects which visit Centaurea scabiosa and Centaurea nigra feed mainly on nectar and are likely to visit more frequently the species which produces most nectar. Nectar was extracted from plants in field populations and from plants transplanted in
Autor:
Andrew Lack
Publikováno v:
New Phytologist. 77:787-792
Summary Centaurea nigra s.l. forms a very variable complex which has received extensive taxonomic treatment. From analysis of previous work it is shown that populations growing on chalk and limestone in association with C. scabiosa flower later than
Autor:
Andrew Lack
Publikováno v:
New Phytologist. 91:297-308
SUMMARY If competition for pollinators is an important influence on populations of Centaurea scabiosa and C. nigra sensu lato one of the characters most likely to be affected is flowering time. Observations were made on the flowering period of severa
Autor:
Andrew Lack
Publikováno v:
New Phytologist. 91:321-339