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Inheritance of the unpigmented plant trait in Orobanche cumana
Author(s) -
RODRÍGUEZOJEDA M I,
VELASCO L,
ALONSO L C,
FERNÁNDEZESCOBAR J,
PÉREZVICH B
Publication year - 2011
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.2010.00830.x
Subject(s) - orobanche , biology , parasitic plant , botany , trait , inheritance (genetic algorithm) , weed , orobanchaceae , host (biology) , genetics , gene , germination , computer science , programming language
Rodríguez‐Ojeda MI, Velasco L, Alonso LC, Fernández‐Escobar J & Pérez‐Vich B (2011). Inheritance of the unpigmented plant trait in Orobanche cumana. Weed Research 51 , 151–156. Summary Unpigmented plants characterised by yellow stems and white flowers have been observed in several Orobanche spp. The objective of this research was to study the inheritance of the unpigmented plant trait in Orobanche cumana . Plants of the unpigmented line EK‐A1 that had been self‐pollinated for three generations (S 3 ) were crossed with plants of the wild‐type line EK‐12 using hand emasculation and pollination. F 1 plants showed an intermediate phenotype, characterised by a greenish stem compared with a yellow stem in EK‐A1 plants and bluish‐violet stem in EK‐12 plants. F 2 plants segregated in a 1:2:1 (bluish‐violet: greenish: yellow) ratio, suggesting that plant pigmentation in O. cumana is controlled by a partially dominant allele at a single locus. Monogenic inheritance was confirmed in the F 3 plant generation, which also revealed that the lack of pigmentation has no effect on O. cumana parasitism. This study demonstrated for the first time the feasibility of using hybridisation techniques for developing segregating populations in this species. Because of its simple mode of inheritance, the unpigmented plant trait may have a particular use as a morphological marker in basic and applied studies on O. cumana.