engleski

Effect of different soil water content on photosynthetic efficiency and leaf temperature in sunflower

This paper researches maximum quantum yield of photosystem II (Fv/Fm), performance index (PIABS) and leaf temperature (LT) at different soil water content (60 and 80% of the field water capacity) for 13 sunflower genotypes with the aim to determine their stability in these conditions. Also, using stress susceptibility index (SSI) we were able to determine genotype stability at different soil water content, photosynthetic efficiency parameter values and LT values. Based on the results for SSI and average Fv/Fm, PIABS and LT values, five genotypes had higher stability and tolerance for investigated traits, and two genotypes were less stable. These analyses will help breeders to select genotypes adapted to farming area. Genotype adaptability combined with the use of recommended production practices is the background for profitable sunflower production.

photosynthetic efficiency ; leaf temperature ; stress susceptibility index ; sunflower

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