Starch, growth, and development in cuttings of rootstock 'Paulsen 1103' from plants infested with ground pearl

Ciência Rural

Zart, Marcelo³  Souza, Daniel Antunes²  Denardi, Diana²  Santos, Henrique Pessoa dos²  Souza, Paulo Vitor Dutra de¹ 

[1] Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;Embrapa Uva e Vinho, Bento Gonçalves, Brazil;Universidade Estadual do Norte do Paraná, Cornélio Procópio, Brasil

关键词: Margarodidae;    Vitaceae;    insect-plant interaction;    carbohydrates;   

DOI  :  10.1590/0103-8478cr20150508

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

:The ground pearl, Eurhizococcus brasiliensis, is considered an important pest of vineyards in southern Brazil, with affected plants exhibiting leaf chlorosis, reduction in vigor, fading, and death. This study evaluated the quality of hardwood cuttings produced from plants infected (I) and not infected (NI) by ground pearl. 'Paulsen 1103' ( Vitis berlandieri× Vitis rupestris) plants were grown for 29 months in brick-built raised beds either infested or not infested by ground pearl; then, 12 one-year-old branches with a maximum of 12 buds each were cut from each plant, subdivided into three portions (4 buds cutting-1), and subjected to destructive and nondestructive testing. DDestructive testing comprised determining fresh and dry weight, length, internode diameters, and percentage of starch. Nondestructive testing comprised assessing the potential for bud sprouting and shoot development. Each mother plant in the I and NI beds was considered a replicate, with a total of 360 cuttings per treatment. It was observed that cuttings from infected plants had significantly lower (P<0.05) internode diameter, length, and fresh and dry weight than those of the uninfected plants. The percentage of starch content of the cuttings did not differ significantly. All cuttings showed the same percentage (100%) of bud breaking and no changes in growth and development of seedlings regardless of source. Given these results, it was concluded that vines of 'Paulsen 1103' infested with ground pearl produce smaller cuttings than those of uninfected plants but with no reduction in bud break percentage or seedling development

【 授权许可】

Unknown