Stefano Macolino, Cristina Pornaro, Guido Pignata, Leonard Lauriault
{"title":"Dhurrin content and biomass yield in sorghum hybrids throughout plant growth cycle","authors":"Stefano Macolino, Cristina Pornaro, Guido Pignata, Leonard Lauriault","doi":"10.1002/agg2.20472","DOIUrl":null,"url":null,"abstract":"<p>In recent years, the use of sorghum [<i>Sorghum bicolor</i> (L.) Moench] in crop rotation as a green manure to decrease nematode infestation and promote the growth of subsequent crops has strongly increased. The reason why sorghum is effective in biofumigation against root-knot nematodes is because it releases dhurrin, a cyanogenic glycoside found in epidermal leaf tissue. Currently, there is little information regarding dhurrin production deriving from dhurrin concentration and biomass produced. A field study was conducted in northeastern Italy to investigate the change in dhurrin content and biomass production of three commercial sorghum-sudangrass cultivars (Hay Day, Mataco, and Ruzrok), over their entire growth cycle under seeding dates (May and July). Regardless of the growing period, Ruzrok displayed a higher dhurrin production. During the early growth stages, Ruzrok did not exhibit a higher yield compared with Mataco and Hay Day, hence its higher potential as a biofumigant is due to the higher concentration of dhurrin in plant tissues. During spring conditions, all tested cultivars showed higher dhurrin production up to a height of 100 cm, while the amount of dhurrin did not significantly change during the entire growing period in summer.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20472","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agrosystems, Geosciences & Environment","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/agg2.20472","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
In recent years, the use of sorghum [Sorghum bicolor (L.) Moench] in crop rotation as a green manure to decrease nematode infestation and promote the growth of subsequent crops has strongly increased. The reason why sorghum is effective in biofumigation against root-knot nematodes is because it releases dhurrin, a cyanogenic glycoside found in epidermal leaf tissue. Currently, there is little information regarding dhurrin production deriving from dhurrin concentration and biomass produced. A field study was conducted in northeastern Italy to investigate the change in dhurrin content and biomass production of three commercial sorghum-sudangrass cultivars (Hay Day, Mataco, and Ruzrok), over their entire growth cycle under seeding dates (May and July). Regardless of the growing period, Ruzrok displayed a higher dhurrin production. During the early growth stages, Ruzrok did not exhibit a higher yield compared with Mataco and Hay Day, hence its higher potential as a biofumigant is due to the higher concentration of dhurrin in plant tissues. During spring conditions, all tested cultivars showed higher dhurrin production up to a height of 100 cm, while the amount of dhurrin did not significantly change during the entire growing period in summer.