Interstock effects on growth and ⁴⁵Ca distribution in ‘delicious’ apple seedlings¹

Visiting Research Horticulturist, Institute of Pomology, Shanxi Academy of Agricultural Science, Tai‐Gu, People's Republic of China.

Abstract

Comparisons were made of the ⁴⁵Ca uptake of ‘Redchief Delicious’ apple seedlings (Malus domestica Borkh) grown on ‘York Imperial’ rootstocks with interstocks of ‘Redchief Delicious’, M9 and short, medium and long internode ‘Delicious’ stocks. Seedlings were grown in aerated complete nutrient solutions. Applied ⁴⁵Ca was readily translocated to rootstocks, interstocks, scions and leaves of M9 and short internode combinations.

⁴⁵Ca accumulated to a much greater extent in rootstock and the interstock than the scion. Applied ⁴⁵Ca was translocated much more readily to the bark than to the wood.

Key words:

• Calcium

Notes

Visiting Research Horticulturist, Institute of Pomology, Shanxi Academy of Agricultural Science, Tai‐Gu, People's Republic of China.