New Zealand Journal of Crop and Horticultural Science abstracts
Inheritance of foliar resistance to ascochyta blight in lentil (Lens culinaris)
G. Ye
School of Land and Food Sciences
The University of Queensland
Brisbane, Q 4072
Australia
email: g.ye@uq.edu.au
D. L. McNeil
G. D. Hill
Plant Sciences Group
P.O. Box 84
Lincoln University, Canterbury
New Zealand
Abstract Inheritance of foliar resistance to ascochyta blight in lentil (Lens culinaris) was studied using four resistant (ILL 5588, ILL 5684, ‘Indianhead’, and ‘Laird’) and two susceptible inbreds (W6 3192 and ‘Titore’) in a glasshouse. Isolate “Rakaia” of Ascochyta lentis was used in all the experiments. F2, BC1 (backcross to the resistant parent), and BC2 (backcross to the susceptible parent) generations of the crosses between resistant and susceptible inbreds were used to detect the inheritance models. F2 generations of the crosses between resistant and resistant inbreds and two 3-way crosses were used to test allelic relationships among resistance genes. Two dominant genes, one for resistance and one for moderate resistance, are present in ILL 5588. One dominant gene, which is allelic to the one for resistance in ILL 5588, confers the resistance in ILL 5684. One recessive gene is responsible for the resistance in cultivar ‘Laird’. The resistance in ‘Indianhead’ is under control of two recessive genes with additive effects. Two complementary genes, one in W6 3192 and one in ‘Titore’, are responsible for the resistance observed in the F2 generation of the cross between these two susceptible cultivars.
Keywords ascochyta blight; Ascochyta lentis; inheritance model; Lens culinaris; resistance
H02001 Received 3 January 2002; accepted 3 February 2003; published 12 June 2003
New Zealand Journal of Crop and Horticultural Science, 2003, Vol. 31: 77-83
0014-0671/03/3102-0077 $7.00 © The Royal Society of New Zealand 2003
PDF file of entire paper: Print-quality (66K) | screen-quality (48K)
This year's abstracts |
Journal home page |
All abstracts |
Publishing home page
