Sj. Park et Br. Buttery, INHERITANCE OF NON-NODULATION AND INEFFECTIVE NODULATION MUTANTS IN COMMON BEAN (PHASEOLUS-VULGARIS L), The Journal of heredity, 85(1), 1994, pp. 1-3
Two nodulation mutants lacking effective nodules were induced in commo
n bean (Phaseolus vulgaris L.) by treating seeds with ethyl-methane su
lfonate. Inheritance of ineffective nodulation (IN) and non-nodulation
(NN) was determined in crosses with wild types (W). Both nodulation c
haracteristics were controlled by single recessive genes. Complementat
ion tests, including nitrate-tolerant supernodulation (NTSN) mutants,
revealed that all three nodulation types were under nonallelic control
with distinct function. The gene symbols nie and nnd-2 were assigned
for IN and NN types, respectively. A gene nod previously assigned for
NTSN of common bean lines R32 and SV145 is changed to nts. Recessive e
pistasis occurred with nie being epistatic to nts, and nnd-2 being epi
static to nts and nie.