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GROWTH OF CROSS‐ AND SELF‐POLLEN TUBES IN THE STYLES OF BRASSICA OLERACEA
Author(s) -
OCKENDON D. J.,
GATES P. J.
Publication year - 1975
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1975.tb01382.x
Subject(s) - pollen , pollen tube , brassica oleracea , botany , brassica , biology , growth rate , horticulture , pollination , geometry , mathematics
SUMMARY Incompatible pollen tubes grew at approximately the same rate as compatible pollen tubes in the styles of Brassica oleracea . This is further evidence that in this species the chief barrier to the growth of incompatible pollen tubes is the stigmatic surface and that there is no positive inhibition of incompatible pollen tubes in the style. There were usually very many more pollen tubes at the top of the style than at its base, which indicated considerable variation in growth rate between the pollen tubes in a single style. The fastest pollen tubes in a style typically had a growth rate of 0.40–0.70 mm/h but the mean rate of growth was 0.14–0.34 mm/h.