Effects of Phytophthora sojaeinoculation under flooded conditions on growth of soybean seedlings

Autor: Tada, Terufumi, Kato, Momo, Tanaka, Chihiro, Shiraiwa, Tatsuhiko
Zdroj: Plant Production Science; October 2021, Vol. 24 Issue: 4 p433-439, 7p
Abstrakt: ABSTRACTPhytophthora root and stem rot due to Phytophthora sojaeis a major constraint of soybean production. This study evaluated the combined effect of P. sojaeinoculation and flooding on growth of soybean seedlings. The soybean cultivar ‘Enrei’ was grown in a greenhouse in pots containing vermiculite and containers of field soil. The plants were inoculated with two P. sojaeisolates and subjected to flooding. The ratio of dead to live plants ranged from 0 to 0.32 across all treatments. Pathogen inoculation caused a significantly shorter maximum root length (MRL) in all the three experiments. MRL and shoot and root dry weight were affected by interaction between inoculation and flooding in one experiment with vermiculite media. Flooding affected the growth parameters only in the experiment with soil media. The results indicated that root of the soybean seedlings that survived from P. sojaeinfection grew less well than the non-inoculated plants.
Databáze: Supplemental Index