Influence of the combination of scion peach [Prunus persica] cultivars and Prunus japonica Thumb. and P. tomentosa Thumb. as a dwarfing rootstock on growth and fruit production
2008
Yaegaki, H.(National Inst. of Fruit Tree Science, Tsukuba, Ibaraki (Japan)) | Inomata, Y. | Murase, S. | Ito, A. | Yoshioka, H. | Takatsuji, T. | Suzuki, K.
The suitability of Prunus japonica Thumb. and P. tomentosa Thumb. as the dwarfing rootstock for 7 peach and 2 nectarine cultivars was investigated. During the experiments, the following types of trees died: 'Takeihakuhou', 'Hikawahakuhou', 'Akatsuki' and 'Flavortop' grafted on P. tomentosa and 'Takeihakuhou', 'Hikawahakuhou' and 'Hiratsukared' grafted on P. japonica. No deaths observed among 'Saotome', 'Chiyohime', 'Kansukehakutou' and 'Shimizuhakutou' on either dwarfing rootstocks. Tree height, trunk diameter and total shoot length were smaller in all cultivars on P. japonica and P. tomentosa than in P. persica. The cultivars 'Chiyohime', 'Hikawahakuhou', 'Kansukehakutou' and 'Shimizuhakutou' had smaller trees on the P. tomentosa rootstock than on the P. japonica rootstock. On the other hand, the cultivars 'Saotome' and 'Hiratsukared' had smaller trees on P. japonica than P. tomentosa. The results indicated that fruit maturation accelerated and the soluble solids content in the fruit was high in the both dwarfing rootstocks. The annual yield per unit area of trees from the dwarfing rootstock tended to be less than that in the peach rootstock.
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