New Low-Vigour Apricot Rootstocks Compared

Abstract

About ten years ago nurseries began to test several novel apricot stocks developed either to reduce plant vigour and boost early as well as high cropping or as a more suitable replacement for Myrabolan (Prunus cerasifera) and Apricot seedling in water-logged or chlorotic soils. These stocks were the Italian bred selections of Prunus domestica Penta and Tetra, the P. cerasifera Adara and the Prunus insititia Adesoto® 101, both Spanish-bred seedlings, and Plumina®, a Prunus bessey × P. cerasifera hybrid developed in France. Performance testing was carried out under a national project. The trials were set up in 2001 in plots of pilot orchards at Imola in Bologna Province, Ancona, Caserta, Palermo and Cagliari, their soil profiles differing notably from each other. They were tested against Apricot seedling and Myrabolan 29C controls grafted to cv. San Castrese. The experimental layout was split-plot with 15 replicates per plant and the trees were trained to delayed vase. Performance results after the first seven years indicate the viability of Penta and Tetra and, contrary to expectations, that Adesoto® 101 is incompatible with apricot and Adara is too weak in heavy soils.

Evaluation of time demands of pruning selected apricot varieties and rootstocks

“…However Missere et al (2010) describes diff erent results. Rootstocks Penta and Tetra proved to be of intermediate vigour, with values close to Myrabolan 29C, and apricot seedlings were the most vigorous in all combinations.…”

Natural mycorrhizal colonization of different apricot rootstocks

“…'Wavit' (Prunus domestica L.), derived from clonal lines of the Austrian Wangenheim plum, has been observed to reduce growth vigor in many cases (Yordanov et al, 2015). 'Wavit', similar to 'Fehér besztercei', is known for its uniform orchards and reduced vigor (Missere et al, 2010). 'Myrobalan 29C' (P. cerasifera myrobalana L.) is particularly suitable for soils with a high lime content and offers a good adaptation (Foschi et al, 2012).…”

Pomological Characteristics of Some Apricot Varieties Grown in the Northeast Area of Romania

“…Regarding the vigor of the trees, the determinations showed very significant positive statistically differences for 'Traian', 'Fortuna' and 'Dacia' with 118.0 cm 2 , 108.8 cm 2 and respectively 91.3 cm 2 , while 'Goldrich', 'Mamaia' and 'Ovidiu' registered low vigor tree as 61.9 cm 2 , 43.0 cm 2 respectively 26.5 cm 2 TSA with very significant negative statistically differences (table 2). In terms of vigor of the trees, low parameters give possibilities for high density plantations but the influences of the rootstock is also important (Missere et al, 2010).…”