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Expression of Known Maturity Genes of Sorghum in Temperature and Tropical Environments 1
Author(s) -
Miller F. R.,
Quinby J. R.,
Cruzado H. J.
Publication year - 1968
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1968.0011183x000800060010x
Subject(s) - sorghum , biology , maturity (psychological) , tropics , sorghum bicolor , gene , inheritance (genetic algorithm) , sweet sorghum , allele , genotype , horticulture , botany , agronomy , genetics , ecology , psychology , developmental psychology
In Texas, in the long days of summer (14.5 hr), combinations of dominant and recessive alleles at the four maturity gene loci in Sorghum bicolor (L.) Moench cause a spread in flowering from 40 to 100 days. In Puerto Rico in the short days of the winter (ll hr), the spread in flowering is 42 to 64 days. The maturity genotypes studied indicate that sorghums flower at about the same time in short days, but not in long days; and that flowering in long days can be explained in terms of a few genes. The maturity responses of sorghum in the tropics, under conditions described herein, are due to short days and not quantitative inheritance.