Premium
TOMATO TRICHOMES AND MUTATIONS AFFECTING THEIR DEVELOPMENT
Author(s) -
Reeves Alvin F.
Publication year - 1977
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1977.tb15717.x
Subject(s) - trichome , biology , hairless , botany , lycopersicon , stalk , multicellular organism , epidermis (zoology) , apex (geometry) , bristle , anatomy , genetics , gene , brush , horticulture , electrical engineering , engineering
A new trichome type for the genus Lycopersicon is described in L. esculentum Mill. It is a short (0.03–0.08 mm), pendant, glandular hair with a club‐shaped head consisting of 8–12 cells. Two previously described “hairless” mutations were examined microscopically. One, hl , does not affect the frequency of hairs nor the number of cells per hair, but causes abnormal enlargement of the stalk cells of all hair types, and thus produces shortened, extremely bent and twisted hairs. Observations on the time of action of this gene indicate that in trichome development two to four cell divisions occur prior to any appreciable cell enlargement. The second mutation, h , affects only the large type of trichome. This mutation effects a developmental shift from trichome to stomatal apparatus at the apex of the multicellular base normally supporting the large trichomes.