CONTENT OF PHOTOSYNTHETIC PIGMENTS IN VARIOUS ORGANS OF WILD AND CULTURAL PEA
Study of photosynthetic pigments content in stipules, leaflets, tendrils and pod flaps of pea varieties Jaguar, Shevron, Temp and wild accessions k-3370 (elatius), k-5322 (asiaticum), k-2365 (transcaucasicum) from VIR collection in the period of embryogenesis and seed filling was conducted. The highest content of photosynthetic pigments was observed in stipules and leaflets, smallest content - in ovules and pod flaps, but tendrils occupied the intermediate position between them. In tendrils of experimental plants, mean content of chlorophylls and carotenoids was in 2.8 and 2.4 fold lower than in leaflets respectively. There were no significant differences between varieties and wild accession on content of photosynthetic pigments in tendrils, ovules and pod flaps. Accordingly, wild accessions k-5322, k-3370 and variety Jaguar with high content of photosynthetic pigments in stipules and leaflets was marked for use in research and pea breeding. Wild accessions k-5322 (9.14 mg/g DM) and k-3370 (5.36 mg/g DM) had high content of Chl a in stipules, but accession k-5322 (6.03 mg/g DM) and variety Jaguar (5.7 mg/g DM) - in leaflets. Wild accessions k-5322, k-3370 and variety Juguar also had high content of Chl b in stipules - 3.80 mg/g DM, 2,55 mg/g DM, 2.05 mg/g DM and in lefleats - 2.51 mg/g DM, 2.28 mg/g DM, 2.39 mg/g DM respectively. The highest content of carotenoids was revealed in stipules (2.33 mg/g DM) and slightly less (1.59 mg/g DM) in leaflets of accession k-5322, and in leaflets of variety Jaguar (1.42 mg/g DM).