Induced mutations in winter two-row barley

Technical Report · Sat Jan 01 04:00:00 EST 1972

OSTI ID:4331772

Stefanov, T

Gamma rays (/sup 60/Co) (5 to 50 kR doses on dry seeds) were utilized as the mutagenic agent in the variety Beta Ketsoras. A great number of lines Were obtained with shorter periods of vegetation, short and good lodging resistance straw, improved winter hardiness, improved quality of grain, many of which were utilized as initial material in further selection studies. During the period 1970/71 and 1971/72 as a control and preliminary variety test, 57 mutant lines were investigated, of which 14 yield with 8.16 to 26.91% gave higher-yielding than the initial variety and average yield of Deta Ketsoras of 559 kg per 1/4 acre. Observations on winter hardiness of induced mutants show that several of these mutants possess a higher winter hardiness than the parent variety. For instance 71.21 to 77.78% of Beta Ketsoras plants survived during the winter period of 1972, while the survival percentage of mutant lines in M 3266/ 610, M 3465/656, M 3764/717 is 92.32 to 99.34. Mutant 1014/161 is remarkable for its absolute and per hectolitre weight, better kernels and surpasses by its techaological qualities the initial variety. Mutant 3139/576 is the higher- yielding among the tested lines and outclasses the parent variety with 26.91%, or with 147 kg grain per 1/4 acre. (auth)

• Research Organization: Komitet za Mirno Izpolzuvane na Atomnata Energiya, Sofia (Bulgaria); Akademiya na Selskostopanskite Nauki, Sofia (Bulgaria)
• NSA Number: NSA-29-024464
• OSTI ID: 4331772
• Report Number(s): INIS-mf--748
• Country of Publication: Bulgaria
• Language: Bulgarian

Related Subjects

*BARLEY-- MUTATIONS
*MUTATIONS-- RADIOINDUCTION
AGRICULTURE
BIOLOGICAL RADIATION EFFECTS
GAMMA RADIATION
GENETIC RADIATION EFFECTS
N48420* --Life Sciences--Radiation Effects on Plants-- Applications
PHOTON BEAMS
PLANT BREEDING
PRODUCTIVITY