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Inheritance of plant height in the dwarf mutant ‘Enana’ of safflower
Author(s) -
Velasco L.,
PérezVich B.,
MuñozRuz J.,
FernándezMartínez J.
Publication year - 2000
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1046/j.1439-0523.2000.00534.x
Subject(s) - biology , allele , locus (genetics) , genotype , genetics , cultivar , mutant , genetic inheritance , heterozygote advantage , trait , botany , gene , computer science , programming language
The dwarf safflower mutant ‘Enana’ has been developed from the cultivar ‘Rancho’ by chemical mutagenesis. The objective of the present research was to study the inheritance of plant height in crosses between ‘Enana’ and ‘Rancho’. Plants of both lines were reciprocally crossed and the F 1 , F 2 and F 3 generations were obtained. The evaluation of plant height in the F 2 generation suggested the presence of a single locus controlling this trait. This was confirmed after the evaluation of 164 F 2:3 lines, which revealed an F 2 segregation fitting a 1:2:1 (dwarf: intermediate: standard) ratio. The locus was designated D w . As the mutated allele was partly dominant over the wild‐type allele, the proposed genotype for ‘Rancho’ was d w d w , whereas that for ‘Enana’ was D w D w . Furthermore, a partial cytoplasmic effect on plant height was detected, with the heterozygote D w d w being about 6 cm taller when ‘Rancho’ was used as female.