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THE ORIGIN, FERTILITY AND TRANSMISSION OF MONOSOMICS IN GOSSYPIUM
Author(s) -
Brown Meta S.,
Endrizzi J. E.
Publication year - 1964
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.1537-2197.1964.tb06606.x
Subject(s) - biology , gossypium hirsutum , outcrossing , transmission rate , fertility , chromosome , botany , transmission (telecommunications) , genetics , gene , population , demography , pollen , sociology , electrical engineering , engineering
The origin of 51 monosomic plants in Gossypium hirsutum is described, and the great majority are shown to be fertile and transmissible. Both fertility and transmission rate can be increased by outcrossing and selection. Monosomics which have been isolated in a standard hirsutum background can be recognized by distinct morphological characteristics, including modifications of both vegetative and reproductive structures such as smaller or narrower leaves, smaller flowers or flower parts, and smaller, longer, or partially collapsed bolls. Monosomics involving the large chromosomes, i.e., the A genome, are recovered more frequently than are monosomics of the D (small chromosomes) genome. Furthermore, monosomics of certain of the A chromosomes are recovered more frequently than others. Of 20 identified hirsutum monosomics, 7 are chromosome A‐2, 7 are A‐4, 3 are A‐6, and 1 each is A‐1, D‐17 and D‐18.