Vegetative growth and foliar nutrient contents of peach on different clonal rootstocks

Abstract: The objective of this work was to evaluate the effect of 19 clonal rootstocks on the vegetative growth and foliar nutrient contents of the 'BRS Kampai' and 'BRS Rubimel' peach (Prunus persica) trees. In the period of 2014 to 2018, two field trials were carried out in the municipalities of Jarinu and Jundiaí, in the state of São Paulo, Brazil. The BRS Kampai and BRS Rubimel cultivars, budded on 19 clonal rootstocks, besides their own-rooted scions, were evaluated in Jarinu and Jundiaí, respectively. In Jarinu, the Barrier, Cadaman, 'Capdeboscq', Flordaguard, GxN9, I-67-52-4, 'Okinawa', México Fila-1, Nemared, Tsukuba-2, and Tsukuba-3 rootstocks, as well as the own-rooted scion, showed the best performance for vegetative growth and foliar nutrient contents. In Jundiaí, all genotypes, except Marianna 2624 and Mirabolano 29C, did not show any statistical difference regarding vegetative growth. The performance of own-rooted 'BRS Kampai' and 'BRS Rubimel' is similar to that of traditional rootstocks, such as 'Okinawa'. Therefore, the evaluated scion cultivars may be an interesting alternative for sites with suitable biotic and abiotic soil conditions.

摘要：本研究旨在评估19种无性系砧木（clonal rootstocks）对‘BRS Kampai’与‘BRS Rubimel’桃（Prunus persica）树的营养生长（vegetative growth）及叶片养分含量（foliar nutrient contents）的影响。2014至2018年期间，于巴西圣保罗州的雅里努（Jarinu）与容迪亚伊（Jundiaí）两市开展了两项田间试验。分别于雅里努与容迪亚伊试验点，评估了嫁接于19种无性系砧木的‘BRS Kampai’、‘BRS Rubimel’品种，以及各自的自根接穗（own-rooted scions）材料。在雅里努试验点，Barrier、Cadaman、‘Capdeboscq’、Flordaguard、GxN9、I-67-52-4、‘Okinawa’、México Fila-1、Nemared、Tsukuba-2、Tsukuba-3砧木，以及自根接穗材料在营养生长与叶片养分含量方面表现最优。在容迪亚伊试验点，除Marianna 2624与Mirabolano 29C外，其余供试基因型在营养生长指标上均无统计学显著差异。自根栽培的‘BRS Kampai’与‘BRS Rubimel’的表现与‘Okinawa’等传统砧木的表现相当。因此，在土壤生物与非生物条件适宜的种植区域，本研究评估的接穗品种可作为颇具潜力的替代方案。