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The maize mutant barren stalk1 is defective in axillary meristem development
Author(s) -
Ritter Matthew K.,
Padilla Christopher M.,
Schmidt Robert J.
Publication year - 2002
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 - 10.3732/ajb.89.2.203
Subject(s) - biology , meristem , mutant , inflorescence , tassel , axillary bud , epistasis , phenotype , botany , zea mays , genetics , gene , agronomy , tissue culture , in vitro
barren stalk1 is a recessive mutant of maize that has no tassel branches, spikelets, tillers, or ears. Here we present a detailed characterization of the ba1 mutant phenotype, including scanning electron microscopy of developing inflorescences, in situ hybridization analysis using a meristem marker, molecular mapping, and genetic analysis demonstrating an epistatic relationship between ba1 and teosinte branched1 (tb1) . These data show that the primary defect in the ba1 mutant is a failure in axillary meristem development.