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ROOTSTOCK EFFECT ON PHOTOSYNTHETIC PIGMENT<br />
SYSTEM FORMATION IN APPLE TREE LEAVES<br />
G. Ðabajevienë, D. Kviklys, N. Kviklienë, A. Kasiulevièiûtë, P. Duchovskis<br />
Summary<br />
Photosynthetic pigment system in the leaves of apple tree cv. ‘Belaruskoje malinovoje’<br />
on different rootstocks was investigated at the Lithuanian Institute of Horticulture<br />
during 2004–2006. Nine rootstocks were included: Bulboga, Pure1, B.9,<br />
B.396, B.416, M.9, M.26, P 60, P 22. The photosynthetic pigment content and<br />
ratios of apple tree cv. ‘Belaruskoje malinovoje’ on different rootstocks varied between<br />
years. Photosynthetic pigment content and chlorophyll a/b ratio in apple leaves<br />
depended on crop load: the higher crop the higher photosynthetic pigment content<br />
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