Growth of soybean seedlings in relay strip intercropping systems in relation to light quantity and red:far-red ratio

Isoflavonoid Accumulation Pattern as Affected by Shading from Maize in Soybean (Glycine max (L.) Merr.) in Relay Strip Intercropping System

“…This may be attributed to the decreased growth caused by shading in RC before maize was harvested. We found photosynthetically active radiation of soybean canopy was significantly lower in RC (Table 10), in agreement with the report of Liu et al (2011) and Yang et al (2014). and Song et al (2009) found that poor light resulted in a lower specific leaf weight photosynthetic rate and lower weight of dry matter accumulation in RC.…”

“…In China, the maize-soybean relay strip intercropping system (RC) is a practice particularly important in the southwestern regions (Yan et al, 2010;Zhang et al, 2011aZhang et al, , 2011bXiang et al, 2012;Yang et al, 2014), and is expected to help expand the soy isoflavone industry (Ye et al, 2010). However, RC affects the microenvironment of soybean growth differently from that of the sole cropping system (SC) (Yan et al, 2010;Liu et al, 2011;Yang et al, 2014). At the soybean seeding growth stage, the spectral irradiance, light intensity, red to far red (R /FR) ratio and photosynthetically active radiation were decreased in RC compared to SC Yan et al, 2011;Yang et al, 2014).…”

“…However, RC affects the microenvironment of soybean growth differently from that of the sole cropping system (SC) (Yan et al, 2010;Liu et al, 2011;Yang et al, 2014). At the soybean seeding growth stage, the spectral irradiance, light intensity, red to far red (R /FR) ratio and photosynthetically active radiation were decreased in RC compared to SC Yan et al, 2011;Yang et al, 2014). Temperature in RC was lower while relative humidity was higher than in SC .…”

Soybean Architecture Plants: From Solar Radiation Interception to Crop Protection

“…Plants that detect a low R/FR ratio will initiate some physiological changes and like this, plants express shade avoidance characteristics [25,26]. In an experimental system of modification in the R/ FR ratio under relay intercropping with maize and soybean, decreases in stem diameters (20.3 and 21.3%) and root length (23.5 and 30.5%) and an increase in the seedling height (approximately 89.8 and 86.9%) were observed for two cultivars, as compared to those under sole cropping [27].…”

Effects of Continuous Shade Stress during Procreation Growth Stage on Isoflavone and Lignin Accumulation in Developing Soybean Seed

“…Soybean is highly sensitive to shading, thus, when grown with shading, soybean seedlings have increased height and thinner stems that are easier to lodge [7]. Previous report also indicated that the shaded treatment had a large increase in glucosides and flavones [8].…”