Sa. Stanko, PHOTOENERGETIC FEATURES AND PRODUCTIVITY OF POTATO SOMATIC PHOTOMUTANTS INDUCED BY INTENSE INTERRUPTED WHITE-LIGHT, Izvestia Akademii nauk SSSR. Seria biologiceskaa, (2), 1996, pp. 160-168
As a result of preplanting irradiation of maternal potato tubers by in
tense interrupted white light (IIWL) at an energy of (18 - 75) x 10(9)
Jm(-2) during the second vegetative reproduction, about 50% of highly
productive somatic photomutants, which were resistant against some di
seases and frost were selected All photomutants had several changed fe
atures not typical of the initial variety. In the tenth vegetative rep
roduction, the constancy of morphological features (shape of shrub, st
em pattern, area and specific mass of leaves) as well as physiological
-biochemical and photoenergetic features were studied (number of chlor
oplasts in cells of the palisade and spongy parenchyma, content of pig
ments; soluble proteins and fraction 1 protein, activity of nitrate re
ductase, and the number of reaction centers of photosystems 1 and 2; s
ize of antenna of light-collecting and focusing complex; day course of
photosynthesis intensity; yield and quality of tubers), The mechanism
of mutagenic effect of IIWL is discussed.