Source-sink relationship of soybean accessed by increasing in solar radiation through the plant canopy
AUTOR(ES)
Fioreze, Samuel Luiz; Gotz, Walter José Heck; Turek, Thais Lemos; Fioreze, Ana Carolina da Costa Lara
FONTE
Revista Ceres
DATA DE PUBLICAÇÃO
2022
RESUMO
ABSTRACT The photosynthetic metabolism is a key point to improve soybean yield. In this work, we demonstrated that radiation use by soybean plants can be improved, aiming to improve the grain yield in the lower canopy. The objective of this study was to observe whether the increase in solar radiation input in the canopy of soybean plants improves their yield performance. Three experiments were carried out during the 2017/2018 season. For each experiment, treatments consisted in the opening of one or two side rows of cultivation at the R2 and R5 stage of soybean plants (NA5909RR) until maturity, plus a control. Increase on solar radiation provided by the oppening of rows enhanced the yield potential in the nodes of the lower canopy, mainly when two rows were opened. The main benefits of increasing the radiation available throughout the canopy of soybean plants are observed in the number of pods and thousand-grain weight, demonstrating the importance of increasing the availability of assimilates in lower leaves. Interestingly, the benefits of the increase in solar interceptation were observed regardless of the yield potential of the area, which varied between 4.9 and 6.7 ton ha-1.
Documentos Relacionados
- Alterations in Source-Sink Patterns by Modifications of Source Strength 1
- Source-sink relationships in two soybean cultivars with indeterminate growth under water deficit
- The inflationary effects of environmental fluctuations in source–sink systems
- Rapid Changes in Translocation Patterns in Soybeans following Source-Sink Alterations 12
- Measurement of community metabolism and significance in the coral reef CO2 source-sink debate