Abstract
In this study, were compared the photosynthetic performance of chlorophyll b (Chl b)-deficient mutant lines (ANK-32A and ANK-32B) and wild type (WT) of spring wheat (Triticum aestivum L.) grown under sun and shade light regimes, at fourth fully developed leaf, grown in pots under natural climatic conditions. Analyses were based on measurements of pigment composition and fast chlorophyll (Chl) a fluorescence kinetics. The content of Chl a+b sun (WT 372, ANK-32A 144 and ANK-32B 128 mg*m-2) versus shade (WT 293, ANK-32A 150 and ANK-32B 151 mg*m-2) was statistically significant and the difference between WT and mutant ANK. Unlike the sun-grown, shade grown plants of ANK mutants did not express a severe chlorina phenotype.
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