Grey and Black Anti-Hail Nets Ameliorated Apple (Malus × domestica Borkh. cv. Golden Delicious) Physiology under Mediterranean Climate

Plants

卷:10

António Castro Ribeiro¹  Luís Pinto¹  Manuel Ângelo Rodrigues¹  Margarida Arrobas¹  Ermelinda Silva²  Cátia Brito²  Carlos M. Correia²  Sandra Martins²  Alexandre Gonçalves²  Ivo Pavia²  José Moutinho-Pereira²  Luis Rocha² 

[1] CIMO—Centro de Investigação de Montanha, Instituto Politécnico de Bragança, 5300-252 Bragança, Portugal;

[2] CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, Quinta dos Prados, 5000-801 Vila Real, Portugal;

关键词: glomalin-related soil proteins;    photosynthesis;    water relations;    foliar metabolites;    minerals;    yield;   

DOI  :  10.3390/plants10122578

来源: DOAJ

【 摘 要 】

The use of anti-hail nets on orchards changes the microclimate underneath the net. This might be of great importance in apple growing regions characterized by high radiation levels and hot and dry climates during the summer season. But, depending on the net colour and on the local climatic conditions, the shade promoted triggers different responses by the trees. Grey and black anti-hail nets were applied in an apple orchard (cv. ‘Golden Delicious’) located in Northeast Portugal. Under the nets a lower concentration of glomalin related-soil proteins was observed, along with an improvement on trees water status, stomatal conductance, net photosynthetic rate, total chlorophylls, N, Mg, Fe and Cu concentrations, as well as an increase in mean fruit weight. The major difference between nets was on the photosynthetic efficiency, being higher on black net in sunny days, while grey net performed better under cloudy conditions. The use of netting systems proved to be effective in improving “Golden Delicious” apple trees performance under a Mediterranean climate, mainly when the radiation reaching the plants surpass the tree saturation point for photosynthesis. Therefore, these findings anticipate solutions for current and forecasted negative effects of climate change.

【 授权许可】

Unknown