Effect of shoot bending during apple tree crown formation on some aspects of photosynthetic activity in leaves

Pitushkan, S.G.; Shtirbu, V.V.

Udobreniya i Produktivnost' Rastenii: 51-59


Accession: 001348662

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Leaves on the upper part of the bent shoots of trees trained as Italian palmettes showed greater photosynthetic activity during the whole growing season than leaves on other parts of the same shoot. The accumulation and translocation of soluble carbohydrates was closely correlated with the dates of fruit ripening; in early cultivars the accumulation of labile substances was highest in the apical part of the shoot (up to the point of the bend), lower at the bend itself and appreciably lower beyond the bend. In late cultivars these differences were negligible.