Name
Samofalova Nina Egorovna
Scholastic degree
•
Academic rank
—
Honorary rank
—
Organization, job position
All-Russian Research Institute of crops
Web site url
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Articles count: 1
The article substantiates a necessity to apply the
method of interspecific hybridization in durum
winter wheat breeding, using the present soft winter
varieties for improvement of frost and drought
tolerance at the beginning of germination; resistance
to snow mold, fusariosis and bacteriosis of
ears and grain. The article presents the results of a
comparative study of different types of crossbreeding
at interspecific and intraspecific hybridization
due to germination, emergence, productivity. It has
been shown that intraspecific hybrids ‘T. durum
оз. х T. durum оз.’, interspecific hybrids ‘T. durum
оз. х Т. аestivum оз’ and ‘Т. аestivum оз. х
T. durum оз.’ possessed the highest germination
and emergence with 71,8/75,3% for direct and
60,4/82,5% for backward, 42,8 and 35,5% and
55,4 and 64,1% respectively. In backward (triplecross)
cross-breeding of F1 interspecific hybrids
with durum winter wheat the grain germination
was down to 37,4 and 36,6%, but the emergence
was up to 64,1 and 69,7% and reached the level of
intraspecific hybrids. According to the elements of
ear (head) productivity (grain mass per head, number
of seeds per head), interspecific double-cross
hybrids of the first and the second generation significantly
conceded to intraspecific hybrids, but
they matched them in a number of spikelets and
grain size. The triple-cross hybrids exceed the
double interspecific hybrids in this respect, but
they concede to double-cross and triple-cross intraspecific
hybrids. We studied the principle of splitting of interspecific hybrids of the second
generation ‘T. durum оз. х Т. аestivum оз.’ and
‘T. durum оз. х T. durum оз.’ (direct and backward)
and the triple-cross hybrids obtained from
cross-breeding of interspecific and intraspecific
double-cross hybrids F1 with durum winter wheat