Assessment of rubber tree panels under crowns resistant to South American leaf blight

Pesquisa Agropecuária Brasileira

Larissa Alexandra Cardoso Moraes²  Adônis Moreira²  José Roberto Antoniol Fontes¹  Everton Rabelo Cordeiro¹  Vicente Haroldo De Figueiredo Moraes¹ 

[1] ,Embrapa SojaLondrina PR ,Brazil

关键词: Hevea;    Microcyclus ulei;    Amazon;    crown budding;    nutritional status;    Hevea;    Microcyclus ulei;    Amazônia;    enxertia de copa;    estado nutricional;   

DOI  :  10.1590/S0100-204X2011000500003

来源: SciELO

【 摘 要 】

The objective of this work was to assess the performance of panel clones under crowns resistant to South American leaf blight (Microcyclus ulei). The experiment was carried out with 18 panel clones crown-budded with Hevea pauciflora x H. guianensis, in a Xanthic Ferralsol (Oxisol) in Manaus, AM, Brazil. The following parameters were evaluated: dry rubber yield, plant nutritional status, and anatomical and physiological characteristics of the latex vessels. In the first three years of evaluation, the panel clones IAN 2878, IAN 2903, CNS AM 7905, CNS AM 7905 P1, and PB 28/59 showed the highest dry rubber yield potential, while the clones IAN 6158, IAN 6590, and IAN 6515 should not be recommended for crown budding. Higher potassium and copper foliar content in panel clones were associated to an increase in dry rubber yield. The simultaneous evaluation of anatomical and physiological characteristics of latex is fundamental for the selection of panel clones in the Amazon region. Crown budding is an efficient technology for South American leaf blight management in endemic regions.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License